About Us

GrassrootsHealth’s Mission

GrassrootsHealth is a 501(c)(3) nonprofit public health research organization dedicated to promoting optimal health worldwide through research, education, and advocacy, with a primary focus on the role of vitamin D. Through evidence-based education, resources, and our citizen-science approach to research, we empower individuals to make informed decisions about their health and healthcare providers to move research into practice.

With a panel of 48 senior vitamin D researchers from around the world contributing to its operations, GrassrootsHealth has been running the world’s largest public health intervention study – the D*action field trial – to solve the vitamin D deficiency epidemic worldwide.

Become a Vitamin D*Advocate

Our Founding

GrassrootsHealth was Founded in 2007

In 2007, as Carole was recovering from breast cancer treatment, she stumbled upon a web site which touted vitamin D levels as being important, even preventive, for breast cancer. After more research she found that indeed this research was REAL. Why had she never heard it before? Could she have prevented her breast cancer? She started by garnering the support of many vitamin D researchers and GrassrootsHealth was born – with the mission of moving those researchers’ findings into practice!

Our Values

GrassrootsHealth has a Partnership with 48 World-Renowned Vitamin D Researchers

GrassrootsHealth is not just another health web site. Instead it is the amalgamation of many vitamin D scientists from around the world and across many disciplines. 48 scientists worked together to create our call to action. 48 scientists have agreed that there is no perfect supplement amount, instead blood levels must be tested, and that level should be 40-60 ng/ml (100-150 nmol/L). Much research, not just one study, is behind our mission to make vitamin D testing and monitoring part of standard of care for ALL people.

Our Team

Our Core Team & Advisors

Learn more about the world’s leading vitamin D experts who contribute to research and education.

Jennifer L. Aliano, MS, LAc, CCN

Executive Director

Jen Aliano has been working in the field of nutrition since 2004, with over 13 years of experience in vitamin D research and education specifically. Jen began her career with GrassrootsHealth in 2012. Her various roles have included operations and project management, study design and coordination, event organization and host, communications director, content writing, research reviews, speaking engagements, and educational program development. Jen has been co-author on several peer-reviewed papers, poster presentations, and other resources published in collaboration with GrassrootsHealth and its panel of researchers and scientists. She played key roles in the implementation of vitamin D protocols in practice, including the “Protect Our Children NOW!” Quality Improvement Project, implemented for all prenatal patients at the Medical University of South Carolina in 2015.

Prior to working with GrassrootsHealth, Jen was founder and CEO of a resource educating individuals and practitioners on holistic options for healthy fertility, pregnancy, birth, and children. In this role, she was responsible for organizing online education and hosting in-person educational and networking events for couples, families, and practitioners. She also ran a nutrition, acupuncture, and holistic medicine practice specializing in the treatment of pain, fertility, and prenatal health.

Jen graduated from the University of California, San Diego, studying psychology and pre-medicine in 2000, and received her master’s degree in Traditional Oriental Medicine from Pacific College, San Diego, in 2005. She is an editorial board member of the Orthomolecular Medicine News Service, and has additional certifications in aromatherapy, massage therapy, holistic health practice, and health coaching.

When not working, her favorite activities include surfing, golf, kung-fu, tai chi, and hiking or walking in nature. She is constantly learning and working on ways to improve and maintain overall health, fitness and wellbeing – for herself and others.

Cedric F. Garland, Dr.P.H., F.A.C.E.

Principal Investigator

Dr. Cedric F. Garland is a well-known epidemiologist and Professor Emeritus at the University of California, San Diego, recognized for his extensive research on vitamin D deficiency and its relationship to various health outcomes, particularly cancer prevention. He has published over 150 articles and books on the subject, often in collaboration with his late brother, Dr. Frank C. Garland, and other researchers like Dr. Edward D. Gorham.

Not only has Dr. Garland been a pioneer in UVB and vitamin D research, he has also played a central role in the foundation and operation of GrassrootsHealth and the Vitamin D*action study, serving as Principal Investigator since 2007. Below are some of his other outstanding achievements, many of which have touched the lives of countless individuals, doctors, and researchers over the last several decades, inspiring further investigation into the health-saving benefits of UVB and vitamin D.

Samantha Kimball, PhD, MSc, MLT

Research Director

Dr. Kimball received her Doctor of Philosophy and Master of Science degrees from the department of Nutritional Sciences at the University of Toronto after completing a bachelor’s degree in biology at the University of Guelph. Before attending graduate school, she has trained in medical laboratory science, hematology, transfusion science, microbiology, histology and biochemistry and worked in the clinical lab at Mount Sinai Hospital in Toronto for 13 years. She was the Research Director at Pure North S’Energy Foundation, a health and wellness organization, in Calgary, Alberta for 6 years and is now a Lead Epidemiologist at ICON Plc.

Her research interests include the roles that vitamins, particularly vitamin D, minerals and phytochemicals play in immune function, disease prevention and overall health. She has co-written academic journal articles concerning vitamin D since 2002, with Reinhold Vieth, Bill Grant, Michael Holick and Bruce Hollis (https://www.researchgate.net/profile/Samantha_Kimball/research). Google Scholar lists 55 articles with 2376 citations including Official recommendations for vitamin D through the life stages in developed countries.

Dr. Kimball enjoys paying it forward as a professor and has lectured at the University of Toronto, where she taught Nutritional Toxicology and Vitamin and Mineral Metabolism courses, as well as at Ryerson University where she taught Nutrition Through the Life Span. She taught nutrition for 6 years at St. Mary’s University College in Calgary, Alberta.

When not engaged in research, Samantha is an avid reader, writer and cat person and if off-line can be found in the Rocky Mountains hiking, skiing, or simply enjoying the outdoors.

Beth Sanford, DNP, RN, ACN

Director of Education & Clinical Practice

Dr. Beth Sanford completed her Doctor of Nursing Practice from Rasmussen University with a specialty in Public Health and Policy, focusing on vitamin D translational research. Beth has served vulnerable populations inside and outside the USA since 1996. Currently, she is nursing faculty in the graduate nursing department at Galen College of Nursing. She obtained a post-graduate certificate in Applied Clinical Nutrition to better educate colleagues, patients, and the public about the principles of integrative nutrition. Beth is the lead investigator for GrassrootsHealth’s North Dakota Vitamin D project, and she is serving as the President of the North Dakota Nurses Association and North Dakota Center for Nursing, advocates for health equity & vitamin D awareness, and volunteers mentoring new nurses.

Crystal M. Rahman, DNP, FNP-C, APRN, MSN (USA)

Director of Clinical Practice Integration

Dr. Crystal Marie Rahman earned her Doctor of Nursing Practice from Baylor University, a Master of Science in Nursing with a focus in Leadership and Management from Western Governors University, and dual bachelor’s degrees, BSN and a BA in Biology, from the University of Texas at Arlington. She has been actively engaged in nursing education since 2020, teaching both clinical and didactic courses while leading program evaluation and outcomes initiatives. She currently serves as Assistant Professor in a Graduate Department of Nursing, where she emphasizes evidence-based practice, curriculum innovation, and mentorship of emerging healthcare leaders. She is also a LEAD Alumni of the National League of Nursing Institute, recognizing her commitment to leadership in nursing education.

Clinically, Dr. Rahman completed her DNP residency in an endocrinology practice, where she continues to practice and provide advanced nursing care in complex metabolic conditions. She has also partnered with GrassrootsHealth, where she develops educational modules and media to advance public and professional knowledge of Vitamin D and health optimization. Her expertise spans quality improvement, curriculum and media development, and clinical program design, with a focus on translating evidence into practice to enhance patient outcomes.

International Panel of Published Vitamin D Scientists & Experts

Academy for Human Medicine
Joerg Spitz, M.D.

Ahepa University Hospital
Thessaloniki ,Greece
Kalliopi Kotsa, MD, Ph.D.
Spyridon Karras, MD, Ph.D.

Baxter International
Mathew Mizwicki, Ph.D.

Boston University School of Medicine
Michael F. Holick, Ph.D., M.D.

Creighton University
Robert P. Heaney, M.D. †
Joan M. Lappe, Ph.D., R.N.

Emory University
Vin Tangpricha, M.D., Ph.D.

Harvard University
Carlos A. Camargo, Jr., M.D., Dr. P.H.
Edward Giovannucci, M.D., ScD.
Walter C. Willett, Dr. P.H., M.D.

Inova Comprehensive Cancer and Research Institute
Donald L. Trump, M.D.

Institute VitaminDelta
Raimund von Helden, M.D.

McGill University
John H. White, Ph.D.

Medical University of Graz, Austria
Stefan Pilz, M.D.

Medical University of South Carolina
Bruce W. Hollis, Ph.D.
Carol L. Wagner, M.D.

Mt. San Jacinto College
Laura P. Schoepf, Ph.D.

National Center for Global Health and Medicine
Tetsuya Mizoue, M.D., Ph.D.

Oregon State University,
Linus Pauling Institute
Adrian F. Gombart, Ph.D.

Roswell Park Cancer Institute
Candace Johnson, Ph.D.

Royal National Orthopaedic Hospital, United Kingdom
Benjamin Jacobs, M.D.

Benskin Research Group and Ferris Mfg. Corp.
Linda Benskin, PhD, RN, SRN (Ghana),

CWCN, CWS, DAPWCA, WOCNF (United States)

Torrecardenas Hospital, Almeria

Ana Maria Fernandez Alonso, MD (Spain)

George Washington University

Leigh Frame, PhD, MHS (United States)

Professor, University of California San Diego Department of Preventive Medicine
Principal Investigator, GrassrootsHealth

Cedric Garland, DrPH, FACE (United States)

Aragon Health Research Institute, University of Zaragoza Faculty of Medicine, Zaragoza

Faustino R. Pérez-López, MD, PhD (Spain)

Professor, The Children’s Memorial Health Institute, Warsaw, Poland

Pawel Pludowski (Poland)

Professor of Medicine, Endocrinology & Nutrition

Sunil Wimalawansa, MD, PhD, MBA (Sri Lanka)

Director, GrassrootsHealth

Jennifer Aliano, MS (United States)

Daniel Arnaud (United States)

Founder, GrassrootsHealth

Carole Baggerly (United States)

Tero Brandstaka (Finland)

Kalle Pihlajasaari, BSc (Finland)
https://cholecalciferol.miraheze.org/wiki/Kalle_Pihlajasaari

Public Health Officer

Troy Ross, MD, MPH (United States)

Charli Van Horn, RN, BS (United States)

National Health Service

Wolfgang Walter, MD, MRCGP (Great Britain)

Sunlight, Nutrition and Health
Research Center
William B. Grant, Ph.D.

University of Albany – SUNY
JoEllen Welsh, Ph.D.

University of Alberta
Gerry Schwalfenberg, M.D., CCFP

University of Angers, France
Cedric Annweiler, M.D., Ph.D.

University of Auckland
Robert Scragg, M.D., Ph.D.

University of Birmingham
Martin Hewison, Ph.D.

University of California Davis
Bruce D. Hammock, Ph.D.
Hari A. Reddy, Ph.D.
Ray Rodriguez, Ph.D.

University of California Los Angeles
John Adams, M.D.
Milan Fiala, M.D
H. Phillip Koeffler, M.D.
Keith C. Norris, M.D.

University of California Riverside
Anthony W. Norman, Ph.D. †

University of California San Diego
Richard L. Gallo, M.D., Ph.D.
Cedric F. Garland, Dr. P.H.
Frank C. Garland, Ph.D. †
Edward D. Gorham, Ph.D.
Tissa Hata, M.D.

University of California San Francisco
David Gardner, M.S., M.D.
Bernard P. Halloran, Ph.D.

University of Saskatchewan
Susan J. Whiting, Ph.D.

University of Toronto, Mt Sinai Hospital
Reinhold Vieth, Ph.D.

Vienna Medical University
Heidi S. Cross, Ph.D. †

Vitamin D Council
John J. Cannell, M.D.

Wismar University of Applied Sciences
Alexander Wunsch, M.D

Research Director, GrassrootsHealth

Samantha Kimball, PhD (Canada)

Professor of Immunology and Immunogenetics, University of Guelph

Bonnie Mallard, PhD (Canada)

Médico especialista en Endocrinología y Osteología
Past President de la Sociedad Argentina de Osteoporosis
Director del Centro de Endocrinología y Osteoporosis La Plata, Argentina

José Luis Mansur, MD (Argentina)

Chief of Medical Services, Summit Behavioral Health

Patrick McCullough, MD (United States)

Researcher CONICET (National Council of Scientific and Technical Research Council -Argentina)
Head Laboratory of Osteoporosis and Bone Metabolic Diseases-Hospital de Clinicas-University of Buenos Aires- Argentina
Ex Presidente Asociación Argentina Osteología y Metabolismo Mineral (AAOMM)-(período 2007-2009)
Médica Staff- Mautalen-Salud e Investigación

Beatriz Oliveri, MD, PhD (Argentina)

Janice Blanke, DC (Canada)

Executive Director, Vitamin D Society

Perry Holman (Canada)

Mha Atma S Khalsa, DC (United States)

Naturopath, IESN

Marie-Helene Lessard (Canada)

Katherine Locke, RN, BSN, post-bacc cert.; MSN (United States)

Victoria Meakin, MB, ChB, MRCGP (Great Britain)

University of San Diego

Julianne North, MD, MPH (United States)

American Academy of Ophthalmology

Thomas Reynolds, MD, FACS (United States)

Vitamin D Dosing Policy Update

Moving Vitamin D Research into Practice

It takes an average of 17 years for research to become standard practice. We can’t wait! The vitamin D research shows that blood levels in the range 40-60 ng/ml (100-150 nmol/L) are safe, effective and will lower overall disease incidence and health care costs. GrassrootsHealth is committed to having vitamin D testing and monitoring be part of every yearly physical, for all age groups. How do we achieve this? By starting with project implementations in specific areas – to show it is safe and effective.

GrassrootsHealth Uses Implementations to Move Vitamin D into Practice

GrassrootsHealth started with D*action, a world-wide cohort of over 20,000 self-subscribed individuals wishing to take health into their own hands. In 2012 we launched Protect our Children NOW! – our project to end vitamin D deficiency where is starts – in utero. All implementations are research projects, and we publish research based on our findings.

Vitamin D Scientists & Experts

Scientists’ Call to D*action – Solving The Vitamin D Deficiency Epidemic

40-75% of the world’s population is vitamin D deficient.

The Scientists’ Call to D*action, first issued in 2008, was last updated in 2024

The causal link between severe vitamin D deficiency and rickets or the bone disease of osteomalacia is overwhelming, while the link between vitamin D insuffiency and osteoporosis with associated decreased muscle strength and increased risk of falls in osteoporotic humans is well documented by evidence-based intervention studies.

There are newly appreciated associations between vitamin D insufficiency and many other diseases, including tuberculosis, psoriasis, multiple sclerosis, inflammatory bowel disease, type-1 diabetes, high blood pressure, increased heart failure, myopathy, breast and other cancers which are believed to be linked to the non-calcemic actions of the parent vitamin D and its daughter steroid hormone.

Based on the evidence we now have at hand, action is urgent.

It is projected that the incidence of many of these diseases could be reduced by 20%-50% or more, if the occurrence of vitamin D deficiency and insufficiency were eradicated by increasing vitamin D intakes through increased UVB exposure, fortified foods or supplements. The appropriate intake of vitamin D required to effect a significant disease reduction depends on the individual’s age, race, lifestyle, and latitude of residence. The latest Institute of Medicine (IOM) report, 2010, indicates 10,000 IU/day is considered the NOAEL (no observed adverse effect level). 4000 IU/day can be considered a safe upper intake level for adults aged 19 and older.

It is well documented that the darker the skin, the greater the probability of a vitamin D deficiency. Even in southern climates, 55% of African Americans and 22% of Caucasians are deficient.

More than 1 billion people worldwide are affected at a tremendous cost to society.

A Scientists’ Call to Action has been issued to alert the public to the importance to have vitamin D serum levels between 40 and 60 nanograms/milliliter (100-150 nanomoles/liter) to prevent these diseases. Implementing this level is safe and inexpensive. The benefit of an adequate vitamin D level to each individual will be better overall health and a reduction in illnesses and, ultimately, a significant reduction in health care costs. The benefit of adequate vitamin D levels to society/businesses is a more productive workforce and, lower health care costs. The D*action project has as its purpose to serve as a model for public health action on vitamin D. It is a test bed for techniques, and for providing outcome evaluation at a community level.

Certified D*Practitioner

GrassrootsHealth Certified Vitamin D*practitioners

The following practitioners have completed our Vitamin D*Education course OR at least one vitamin D CME activity (Optimal Health and/or Pregnancy), sponsored by GrassrootsHealth and the University of California San Diego (UCSD), have passed the post-test(s), and have given their information to be listed as a Certified D*Practitioner.

Learn more about becoming a Certified D*Practitioner and other opportunities and resources for practitioners and educators.

States

United States Regions

Pacific Region

Mountain Region

Midwest Region

Southern Region

Northeast Region

U.S. Territories

Countries

By Countries

Arizona

Maricopa County

Marvin Hill, MD – Radiology, BBR Imaging
3430 N. Mountain Ridge, Unit 45, Mesa, AZ 85207
480-547-5757
Certified in Sunlight

Cara Maxson, Naturopathic Physician – The American Center for Biological Medicine
9312 E. Raintree Drive, Scottsdale, AZ 85260
480-614-5820
Certified in Optimal Health

David Perrine, DC – Perrine Chiropractic Health Center
9929 N 95th Street, Suite 105, Scottsdale, AZ 85258
480-661-7799
Certified in Optimal Health

California

Alameda County

Onna Lo, MD – Functional Medicine, Holistic Medicine
1611 San Pablo Ave, 2C, Berkeley, CA 94702
510-747-9033
Certified in Optimal Health

Andrea Pedersen, NP, Endocrinology – UCSF
747 52nd Street, Oakland, CA 94609
510-428-3654
Certified in Pregnancy

Butte County

Roberto Illa, M.D. – Endocrinology, Disorders of Blood Sugar
1068 East Ave., Suite A-1, Chico, CA 95926
530-345-1157
Certified in Optimal Health

Contra Costa County

Regula Dhedhi, Clinical Exercise Physiologist – Simply Fit and Well
2931 Wilshire Place, Concord CA 94518
415-794-8826
Certified in Pregnancy

Inyo County

Teresa McFarland, Family Nurse Practitioner – Southern Inyo Rural Health Center
510 East Locust Street, Lone Pine, CA 93545-1009
760-876-1146
Certified in Sunlight

Los Angeles County

Susan Wu, Geriatric Nurse Practitioner – Kaiser Permenente
5601 de Soto Ave, Woodland Hills CA 91367
818-719-4145
Certified in Optimal Health

Monterey County

Oroma Nwanodi – Doctor of Obstetrics & Gynecology, AMG/OACC
335 Katherine Avenue, Salinas, CA 93901
831-751-6222
Certified in Optimal Health & Pregnancy

Orange County

Laurel Hipszer, PharmD – Pharmaca Integrative Pharmacy
26538G Moulton Parkway, Laguna Hills, CA 92653
949-900-1605
Certified in Optimal Health & Pregnancy

Riverside County

Steve Pomerance – Town Center Compounding Pharmacy
72624 El Paseo, Palm Desert, CA 92260
818-430-2493
Certified in Optimal Health

San Bernardino County

Roberto Illa, M.D. – Endocrinology, Disorders of Blood Sugar
1068 East Ave., Suite A-1, Chico, CA 95926
530-345-1157
Certified in Optimal Health

San Diego County

David Getoff, CCN, FAAIM
El Cajon, CA 92019 – By appointment only
619 441 8700
Certified in Optimal Health, Pregnancy & Sunlight

Sherrie Jacoby, NP – SDSU Student Health Services
5500 Campanile Dr, San Diego, CA 92182-4701
619-594-3463
Certified in Sunlight

Dr. Maraio, Traditional and Alternative medicine – BeautyByWellness
105 Durian Street, Suite D, Vista, CA 92083
760-480-2880
Certified in Sunlight

Konrad Mayr, Certified Nutritional Therapist – Konrad Mayr Health-Life Coaching Systems
4226 Cleveland Ave, Apt G, San Diego, CA 92103
619-791-8429
Certified in Optimal Health, Pregnancy & Sunlight

San Mateo County

Jessica Hope, NP Women’s Health – Vegan Outreach
187 Hardwick Road, Woodside, CA 94062
650-995-7035
Certified in Sunlight

Santa Barbara County

Robert Sheffield, MD – Plastic Surgery/Dermatologic Surgery
2020 Las Canoas Ridge Way, Santa Barbara, CA 93105
805-729-2003
Certified in Sunlight

Santa Clara County

Frances Weller, Health Coach and Clinical Laboratory Scientist – Live Simply-Health Coaching
431 Magnolia Lane, Santa Clara, CA 95051
408-243-6314
Certified in Pregnancy

Sutter County

Tina Lavy, Lactation Consultant – Sutter County WIC
1445 Veterans Memorial, Yuba City, CA 95993
530-822-5951
Certified in Pregnancy

Colorado

Arapahoe County

Thomas Patterson, Doctor of Chiropractic
975 S Rifle St, Aurora, Colorado 80017
303-750-3280
Certified in Optimal Health, Pregnancy & Sunlight

Boulder County

Kodiak Soled, Clinical Herbalist, Nutritionist – Maternity Maven
2043 Pine Street, Boulder, Colorado 80302
513-313-3294
Certified in Pregnancy

Douglas County

Sara VanAnrooy, Psychiatry and Integrative Medicine – The Center for Stress Medicine
1189 S Perry St, Suite 100, Castle Rock, CO 80104
303-663-0360
Certified in Optimal Health

Saguache County

Dearing Fauntleroy, Classical Homeopathy – Health Counseling
120 W. Silver Ave., Room 203, Crestone, CO 81131
719-588-7180
Certified in Optimal Health & Pregnancy

Connecticut

Fairfield County

Jamie Ahn, ND – Good News Naturopathic Clinic
91 East Ave, Norwalk, CT 06851
203-450-6463
Certified in Optimal Health & Pregnancy

Dr. Mikael Bangash – AIHT
11 Elizabeth St, Shelton, CT 06484
203-371-2201
Certified in Optimal Health & Pregnancy

New London County

Brenda Smith, NTP – Start with Nutrition
72 Starwood Trail, Colchester, CT 06415
860-368-0709
Certified in Optimal Health & Pregnancy

Florida

Brevard County

Joseph Glasner, MD – Family Medicine
1980 North Atlantic Ave, Suite 627, Cocoa Beach, FL 32931
321-783-0840
Certified in Optimal Health & Pregnancy

Duval County

Jennifer Glassman, Doctor of Family Medicine – Family Care Partners
6484 Ft Caroline Road, Jacksonville, FL 32277
904-744-7300
Certified in Optimal Health

Flagler County

Dr. Angelo Ippolito – Palm Coast Health
29 Old Kings Road, Suite 3B, Palm Coast, Florida, 32137
386-302-0049
info@palmcoasthealth.com
Certified in Vitamin D Best Practices

Hillsborough County

Amanda Alexander DNP RN, Executive Leadership
9119 Cypresswood Cir, Tampa, FL 33647
813-370-0085
https://www.studyvitamind.com/
Certified Nutrition Specialist/Vitamin D Best Practices

Charlotte Israel, Fitness Nutrition and Weight Management Specialist – Back to Eden Medical Fitness
12187 W. Linebaugh Ave, Tampa, FL 33626
813-765-5418
Certified in Optimal Health & Pregnancy

Okaloosa County

John Lentz, MD – Lentz Care Clinic
737 Highway 98, East, Suite 1, Destin, FL 32541
850-424-6841
Certified in Optimal Health & Pregnancy

Orange County

Lori Isaacs-Hoar, MS, Nurse Practitioner
4903 Woodbreeze Court, Windermere, FL 34786 United States
407-876-9422
Certified in Sunlight

Ayyaz Shah, Physician – Shah Dermatology
7232 W. Sand Lake Road, Suit 200, Orlando, FL 32819
407-730-3187
Certified in Optimal Health & Pregnancy

Palm Beach County

Cynthia Guy, MD – Pain management, NutriLife Wellness
11193 Brandywine Lake Way, Boynton Beach, FL 33473
561-425-2845
Certified in Optimal Health

Pasco County

Stephanie Dearborn Williams, BA, CNA, Educator – Learning Jolts
6626 Woodsman Dr, Wesley Chapel, Fl, 33544
813-973-2898
Certified in Pregnancy

Pinellas

Mark Sibley, M.D. – Florida Eye Center
300 Belleair Drive North East, St Petersburg, FL 33704
727-639-2020
Certified in Optimal Health, Pregnancy & Sunlight

Georgia

Camden County

Richard Brandon, MD, Preventative Medicine – BIOLIFEMD
2400-C St Marys Rd, Saint Marys, Georgia 31558
912-576-7546
Certified in Optimal Health, Sunlight & Pregnancy

Muscogee County

Dr. Edonna Alexandria, Afrocentric Holistic Practitioner – Afrocentric School of Healing
P.O. Box 684, Columbus, Georgia 31902
706-223-0758
Certified in Optimal Health

Illinois

Champaign County

Timothy Vander Ploeg, RN – Endocrinology, Carle Hospital
903 S. Westlawn Ave, Champaign, IL 61821
217-778-1527
Certified in Optimal Health

Cook County

Edward Mcneela, DC – McNeela Chiropractic Center
307 S. Milwaukee Ave., Wheeling IL 60090
847-465-8491
Certified in Pregnancy

Jennifer Woo, CNM, WHNP – Lawndale Christian Health Center
3860 W Ogden Avenue, Chicago, IL 60623, United States
872-588-3000
Certified in Pregnancy

McHenry County

Tarja Anchor, LMT – Advanced Medical Massage
2600 Behan Road, Crystal Lake, Illinois 60014
815-814-7695
Certified in Optimal Health

Indiana

Elkhart County

Heather Horst, RN, BSN, CMT
17648 State Rd 4, Goshen, IN 46528
574.202.9283
Certified in Optimal Health

Hamilton County

Charles Harris, MD – Charles M. Harris MD
3538 Brumley Mews, Carmel, IN 46033-3022
317-848-5957
Certified in Optimal Health

Alta Skelton, Family Nurse Pratitioner – Intergrative and Functional Medicine, Fully Armored Family Health and Fitness
755 West Carmel Drive Ste 150, Carmel, IN 46032
317-810-1399
Certified in Sunlight

Kansas

Johnson County

Tracey Long, Nutritionist and Health Coach – Big Picture Health
6824 W 72nd TER, Overland Park, KS 66204
303-588-9701
Certified in Sunlight

Wyandotte County

Anna Esparham, MD, Pediatric Integrative Medicine – KU Integrative Medicine
3901 Rainbow Blvd Mail stop 1017, Kansas City, KS 66160
913-588-6208
Certified in Optimal Health & Pregnancy

Randy Evans, Dietitian/Nutritionist – KU Integrative Medicine
3901 Rainbow Blvd Mail stop 1017, Kansas City, KS 66160
913-588-6208
Certified in Optimal Health & Pregnancy

Maine

Cumberland County

Sally Haley, MD, GP, Holistic medicine, Medical acupuncture – White Pine Holistic Medicine
93 Church Rd., Brunswick, ME, 04011
207-798-5907
Certified in Optimal Health & Sunlight

Maryland

Baltimore County

Steven Baron, Chiropractic Orthopedist – Bay State Chiropractic Center
405 Frederick Rd. Ste. 15, Catonsville, MD 21228
410-744-8800
Certified in Pregnancy

Rachel Lucke, Nutrition for Women’s Health – Rachel Lucke Nutrition
312 Wyndhurst Ave, 2nd Floor, Baltimore, MD 21210
410-929-5159
Certified in Pregnancy

Massachusetts

Bristol County

Richard Bielawski – VA Healthcare
175 Elm Street, New Bedford, MA 02740
401-255-0840
Certified in Optimal Health & Pregnancy

Michigan

Kalamazoo County

Stephen Sinotte, Ph.D. – Preventive Medicine – R.Stewart Enterprises
P.O. Box 908, Portage, MI 49081
877-540-9444
Certified in Optimal Health, Pregnancy & Sunlight

Missouri

Cape Girardeau County

Jeff Mcnabb, DO – Southern Missouri Internal Medicine
3260 Lexington, Cape Girardeau, MO 63701
573-335-5057
Certified in Optimal Health

Jefferson County

Lacy Hosay – Hosay Healthverse
1 Heather Ct Crystal City MO 63028
314-640-1977
hosayhealthverse@gmail.com
Vitamin D*Certified

Montana

Missoula County

Mary Pittaway, Nutrition Consultant – Bone Health Montana
8 Greenbrier Dr., Missoula, MT 59802
406-544-3969
Certified in Optimal Health & Pregnancy

Nevada

Washoe County

Kerri Knox, RN – Easy Immune Health
3983 S. McCarran Blvd #401, Reno, Nevada 89502
415-573-9521
Certified in Optimal Health & Pregnancy

New Hampshire

Grafton County

Clare Wilmot, Dr. General Practice – Grafton County Nursing Home
3855, Dartmouth College Highway, North Haverhill, NH 03774
603-787-6971
Certified in Pregnancy

New Jersey

Essex County

Defi Abrasheva, PharmD – CVS Pharmacy
187 Millburn Ave, Millburn, New Jersey 07041
973-258-1595
Certified in Optimal Health

Michelle Bruno, Registered Dietitian, Nutritionist – Villas Healthy Living Community
289 Gordons Corner Road, Manalapan, NJ 07726
732-847-3920
Certified in Sunlight

New Mexico

Quay County

Sheryl Gambardella, Nurse Practitioner, OB/GYN – Sunrise Medical Group
220 S 3rd, Tucumcari, NM 88401
575-461-8631
Certified in Pregnancy

New York

Otsego County

Daniel Weaver, MD, MPH, Family Medicine – Basset Health Care Network, Edmeston Health Center
15 Turner Lane, Edmeston, NY 13335
607-965-8900
Certified in Optimal Health & Pregnancy

Sullivan County

George Batista, Certified Nutrition Consultant – GBJ Nutrition
7 Our Street, South Fallsburg, NY 12779
253-780-9638
Certified in Optimal Health

North Carolina

Pitt County

Keith Tucci, MD – Vidant Neurosurgery
2325 Stantonsburg Road, Greenville, NC 27834
252-847-1550
Certified in Optimal Health & Pregnancy

Randolph County

Mona Brooks, RN, Alternative healthcare – Asheboro Nutrition & Bodywork
130 S Church St, Suite 2A, Asheboro, NC 27203
336-625-3311
Certified in Optimal Health & Pregnancy

North Dakota

Burleigh County

Dr. Timothy Nagel – Paape Chiropractic
433 E Bismarck Expressway, Bismarck, ND 58504
701-258-0300
Certified in Optimal Health & Pregnancy

Eddy County

Michael Nicolai, DC, Owner – Nicolai Chiropractic Center
207 1st Ave S., New Rockford, ND, 58356
7019472121
Certified in Optimal Health, Pregnancy & Sunlight

Ohio

Allen County

Patrick Gorman, DC – Modern Health & Wellness
3469 West Elm, Lima, OH 45807
567-940-3333
Certified in Pregnancy

Franklin County

Joseph Iuvara, Dr. of Chiopractic – Beecher Chiropractic & Wellness Center
428 Beecher Rd, Suite B, Gahanna, OH 43230
(614) 855-5533
Certified in Optimal Health & Pregnancy

Geauga County

Peggy Herman – Geauga County WIC Director
470 Center St, Bldg 8, Chardon, Ohio 44024
440-279-1939
Certified in Optimal Health

Lucas

Dr. Theresa Lohman, Family Medicine/Aromatherapy – Esscents Aromatherapy LLC
533 Southfield Dr, Maumee, OH 43537
419-819-9181
Certified in Sunlight

Williams County

Cathlon Sito – WIC Director, Williams County Health Department
310 Lincoln Ave., PO Box 146, Montpelier, OH 43543
419-485-3141
Certified in Optimal Health

Oklahoma

Canadian County

Dorothy (Dusti) Cleveland Pointer, APRN, CNM – Vintage Wisdom Women’s Health
9208 SW 24th ST, Oklahoma City, OK 73128
405-410-7311
Certified in Optimal Health & Pregnancy

Oklahoma County

Jeff Cohlmia, Corporate Fitness Specialist – Devon Energy
333 W. Sheridan Ave., Oklahoma City, OK 73159
405-264-2061
Certified in Optimal Health & Pregnancy

Oregon

Marion County

Josh Galt – Tan Republic Franchising Company
285 Liberty St. NE, Suite 120, Salem, Oregon 97301
503-585-6290
Certified in Optimal Health & Pregnancy

Multnomah County

Beverly Butler, Naturopathic Doctor – Core Wellness Clinic
10200 SW Eastridge St., Ste. 135, Portland, Oregon 97225
(503) 644-4446
Certified in Optimal Health

Curtis Kunkel, Doctor – Rogue Natural Medicine
2304 E Burnside Street #101, Portland, Oregon 97214
541-727-1893
Certified in Optimal Health

Keith Lowenstein, MD – Psychiatry and Nutrition
1675 SW Marlow Blvd #301, Portland, OR 97225
503-384-0044
Certified in Optimal Health

Washington County

Bijana Kadakia, Naturopathic Physician – True Health Medicine, PC
8555 SW Tualatin Road, Suite B, Tualatin, OR, 97062
503-691-0901
Certified in Optimal Health & Pregnancy

Pennsylvania

Philadelphia County

Beverly DeCer, RN, Co-Founder – Mamas Wellness Joint
1100 Pine St., Philadelphia, PA 19107
610-952-4391
Certified in Sunlight

Washington County

Meghan Westwood, Clinical Nutritionist – Westwood Spine and Joint Center
1200 Ashwood Drive, Suite 1203, Canonsburg, PA 15317
724-579-3686
Certified in Sunlight

Guam

Joseph Dimalanta, DC,CNS, Natural Health – Dr. D Chiropractic & Nutrition
424 West O’brien Drive, Suite 115, Hagatna, Guam, 96910
671-649-4871
Certified in Sunlight

Puerto Rico

Sheila Algarin, MD
PO Box 972, Carolina, PR 00986
787-456-7890
Certified in Optimal Health & Pregnancy

Rhode Island

Washington County

Kimberly Hill, Certified Health Coach and Nutrition Counseling – Juice Plus
96 Parsons Lane, West Kingston, RI 02892
401-641-3627
Certified in Optimal Health

South Carolina

Beaufort County

Alvin Danenberg, DDS
29 Plantation Park Dr #303, Bluffton, SC 29910
843-593-8123
Certified in Optimal Health & Pregnancy

Charleston County

Angela Choi, MD Ob-Gyn – Medical University of South Carolina
1280 Hospital Drive, Ste 200, Mount Pleasant, SC 29464
843-876-2000
Certified in Pregnancy

Tricia Condon, Nurse Manager – Women’s Health, Medical University of SC
135 Cannon Street, MSC 839, Charleston, SC, 29425
843-876-1265
Certified in Pregnancy

Ryan Cuff, MD – MUSC Department of Obstetrics & Gynecology
96 Jonathan Lucas St, Ste 601, MSC 617, Charleston, SC 29425
843-792-5300
Certified in Pregnancy

Lindsey Harward, MD – OBGYN Medical University of South Carolina
96 Jonathan Lucas St, Ste 601, MSC 617, Charleston, SC 29425
843-792-5300
Certified in Pregnancy

Megann Helton-Rieter, MD – Medical University of South Carolina
169 Ashley Ave, Charleston, SC 29425
843-792-5300
Certified in Pregnancy

Faye LeBoeuf, CNM – MUSC Women’s Health North
3210 Landmark Drive Ste C, Charleston, SC 29414
843-876-0880
Certified in Pregnancy

Julio Mateus Nino, MD, PhD – Medical University of South Carolina
96 Jonathan Lucas Street, Charleston, SC 29425
843-792-5300
Certified in Pregnancy

Jill Mauldin, MD, MFM – Medical University of South Carolina
171 Ashley Avenue, Charleston, SC 29425
843-792-4500
Certified in Pregnancy

Roger Newman, MD, Ob-Gyn; Maternal-Fetal Medicine – Medical University of South Carolina
Dept of Ob-Gyn, 96 Jomathan Lucas St, Charleston, SC 29425
843-792-7100
Certified in Pregnancy

Ashton Osborne, RN – Charleston Birth Place
9133 Timber Street, North Charleston, SC 29406
843-818-1123
Certified in Pregnancy

Sumter County

Leslie Justice, MSN, APRN, PMHCNS-BC – Adult Psychiatric Mental Health Nursing, Sumter Family Health Center
1278 N. Lafayette Drive, Sumter, SC 29150
803-774-4500
Certified in Sunlight

Tennessee

Blount County

Eugene Runne, Chiropractor – Pain and Health Solutions, Inc.
520 W. Broadway, Maryville, TN 37801
865-982-6321
Certified in Optimal Health

Hamilton County

Mary Bradford – Nutrition World
6201 Lee Highway, Chattanooga, TN 37421
423-892-4085
Certified in Optimal Health & Pregnancy

Texas

Bexar County

Barbara Entl, MD – UTHSCSA
7703 Floyd Curl Dr., San Antonio, TX 78229
210-567-7000
Certified in Sunshine

El Paso County

Patty Crocker, MD – Del Norte Wellness Center
7930 N Mesa B-11, El Paso, TX 79932
915-842-9331
Certified in Optimal Health & Pregnancy

Rockwall County

Steven Horwitz – Dallas Sports Academy
6118 Lincolnshire Ct, Rockwall, TX 75087
214-531-7939
Certified in Optimal Health & Pregnancy

Sabine County

Sharon Byley, RN FNP-C – East Texas Extended Care
103 Timberland Drive, Pineland, Texas 75968
409-584-1981
Certified in Pregnancy

Tarrant County

Paula Williams, RD, LD – Clinical Dietitian, Nutrition
6100 Harris Parkway, Fort Worth, TX 76132
817-433-1380
Certified in Optimal Health

Utah

Salt Lake County

Holly Knudson, FDN, CMTA, HCC – Hormonal Balance and Food Sensitivities, Nutritionmba
11433 S. High Mtn. Circle, Sandy, Utah 84092
801-651-7579
Certified in Optimal Health & Pregnancy

Virginia

Campbell County

Phyllis Everett, Nurse Practitioner – Centra Lynchburg Hematology and Oncology
1701 Thomson Dr, Suite 200, Lynchburg, VA 24501
434-200-5925
Certified in Optimal Health

Fairfax County

Diana Hunt, Family Nurse Practitioner – Dr. Moghissi
9401 Lee Highway, 302, Fairfax, VA 22031
703-281-5560
Certified in Sunlight

Virginia Beach

Susan Lambiase, R.N., B.S.N. – Lions Medical Eye Bank of Eastern Virginia
1321 Five Forks Rd, Virginia Beach, VA 23455
757-464-3857
Certified in Optimal Health

Richmond

Michelle Uí Cheallaigh, FCP – Fertility and Holistic Nutrition, St. Gianna’s Center Affiliate
Patterson Avenue, Richmond, VA 23221
804-727-9711
Certified in Optimal Health, Pregnancy & Sunlight

Washington

Snohomish County

Ren Mendoza, PT, DPT – P5 Orthopedic & Sports Physical Therapy
7500 212th St SW, Ste 112 Edmonds WA 98026
425-215-2216
Certified in Optimal Health & Pregnancy

Wisconsin

Menominee County

Sherry Smith, WIC/Community Dietitian – Menominee Tribal Clinic/WIC
P.O. Box 970, W3275 Wolf River Drive, Keshena, WI 54135
(715) 799-5431
Certified in Optimal Health & Pregnancy

Waukesha County

Gwen Batchelor-Medved, Health & Wellness Counselor, M.Ed – Gwen Medved, LLC
1200 Orchard Lane, Elm Grove, WI 53122
262-501-3648
Certified in Optimal Health & Pregnancy

Algeria

Samir Kikout, MD, Rhueumatology – Université SAAD DAHLAB de BLIDA
route de SOUMÂA BP 270 BLIDA, Blida, 09000 Algeria
213540342302
Certified in Optimal Health

KHIRANI Messaoud, Prof in Clinical Nutrition
N° 01, Bloc 238 Cité El-moujahed Ahmed Ben Bella, Tebesbest, W. Touggourt- Algeria
213663413616
Certified in Vitamin D in Health and Practice

Austria

Andrea Wachter, Dr.med.univ. – Praxis fuer Alternative Medizin Dr. Wachter
Breitenfurterstrasse 410/Top 1, Raitlstr 75, Vienna
Vienna 1230 Austria
+43 676 733 67 63
Certified in Optimal Health & Sunlight

Brazil

Nilson Nogueira Mendes Neto, MD – Universidade Potiguar
Avenida Governador Tarcisio Maia – 1798, apt C-104, bairro – candelaria, Natal, 59066035, Brazil
5303026167
Certified in Optimal Health

Canada

Alberta

Curtis Crough, BSc Pharmacy – The Medicine Shoppe
9728-101 Ave, Suite 100, Grande Prairie, Alberta, T8V 5B6
780-532-6999
Certified in Optimal Health & Sunlight

Dr. Allan A Grove – General Dentistry
8418-182 Street, Edmonton, Alberta T5T 1N7
780-487-6565
Certified in Optimal Health & Pregnancy

Ontario

Susan Buxton – Byron Optometry
1255 Commisssioners Rd W, ground floor, London, Ontario N6K 3N5
519-471-3500
Certified in Optimal Health

Maya de Szegheo-Lang, Homeopath (Ontario), Family Practice – Synergy Homeopathic Clinic
301 Division Street, Cobourg, ON K9A 3R2 Canada
905-377-8318
Certified in Optimal Health & Pregnancy

Allan Gdanski, DC – Gdanski Chiropractic
994 Oxford St East, London, Ontario N5Y 3K4 Canada
519-451-4010
Certified in Optimal Health & Pregnancy

Anna McKee – Holistic Nutritionist
307 Gowan Ave., Toronto, Ontario, M4j2k7 Canada
647-926-0665
Certified in Pregnancy

George Mousa – Doctor of Optometry
2436 Bloor St W., Toronto, ON M6S1P9
416-767-9770
Certified in Optimal Health

Columbia

Juan Manuel Martinez Mendez – Dr. Orthomolecular, Regenerative, Alternative-Complementary Medicine
Ortho-Regenerative Medical Center
Cra. 2 Este – 71 Local 1-102, Centro Comercial Sabana Norte, Chia, Columbia.
Tel: +576013888969
Cel: +573158479237
Certified in Optimal Health and Sunlight

Estonia

Michael Baharevs, Naturopath – Tervisesalong Yin Yang
Liivalaia 40, Tallinn, 10145, Estonia
+372 620 0582
Certified in Optimal Health, Pregnancy & Sunlight

France

Dr. Djamel Deramchi, Diabetology, Nutrition, Complementary Medecine – CUREZONE
Place de la Gare, EVRY 91000, France
+33783861531
Certified in Optimal Health & Pregnancy

Francis Pellacoeur
19 rue des Bouvreuils, 91540 Mennecy, France
+33 7 66 90 77 17 – francispellacoeur@hotmail.com
Vitamin D Advocate, Certified in Moving Vitamin D Research into Practice

Germany

Ashok Banerjee, Physiotherapeut – Physio-Praxis Banerjee
Hohlbaeumle 30, Oberkirch 77704, Germany
+497805912501
Certified in Sunlight

Dr. Holger Leschik,Ph.D., – Augenheilkunde, Ophthalmology,Naturopathic therapist
IfaBp-Institut für angewandte Biophotonik, Plantage/Magdeburger-Str. 1A, HALBERSTADT, Sachsen-Anhalt, 38820, Germany
3941611733
Certified in Sunlight

G. Siegfried Wedel, Internist-Nephrologe (retired) – Vitamin D-Sprechstunde / Vorträge
Einemhofer Weg 5, D-21444 Vierhöfen, Germany
49-4172 979 167
email: gswedel@vitaminDsprechstunde.de
Certified in Optimal Health & Pregnancy

Greece

Maria Tsotsa, Pharmacist
Agiokampou 50, Agia, Larisa, 40003 Greece
00302494022636
Certified in Optimal Health, Pregnancy & Sunlight

Iceland

Anna Isfold, Vitamin D Consultant and project manager – VitaminDnorth
Langagerdi 46, Reykjavik, 108, Iceland
+354 8970574
Certified in Pregnancy

India

Dr. Armaan Singh
B-2 / 426 Roshan Marg, Chitrakoot, Vaishali Nagar, Jaipur, Rajasthan 302021
969-454-2253
Certified in Optimal Health & Pregnancy

Ireland

Tobias Pintar, Dr. General Practice
13, Marconi Crescent, Honeypark, Dun Laoghaire, Dublin A96DN22
0035316918882
Certified in Sunlight

Japan

Tal Kinnersly, Health Advocate and Wellness Guide – TalkinHealth
Sugawa, Itoigawa Niigata 949-1327
Japan
+81-25-5615502
Certified in Optimal Health & Pregnancy

Latvia

Michael Baharevs, Naturopath
Riga, Latvia
+37129510723
Certified in Optimal Health & Pregnancy and Sunlight

Mongolia

Saranzaya Erdenechimeg, Medical Doctor – BayangolMed Co,LtD
401, Signature office seoul street 25, khoroo-4 Sukhbaatar district, Ulaanbaatar 14520, Mongolia
956 94524290
Certified in Sunlight

Netherlands

Alderina Dill-Fokkema, MSc, Orthomolecular therapist – Alderina Natuurlijk, Praktijk voor Orthomoleculaire Voedingsleer en Geneeskunde
Sterrenweg 1-A, Berkel en Rodenrijs, Zuid-Holland, 2651 HZ, Netherlands
(+31) 10-5190687
Certified in Optimal Health , Pregnancy & Sunlight

Emmy Janson-Hogenhuis MSc(AgrSc), IBCLC – Private practice Lactation Consultant
Vledder, 8381 BK, Netherlands
+31521381750
Certified in Pregnancy

Barbara van Amerongen, DDS, PhD – Vitamin D and MS
Veemkade 466, 1019 HE Amsterdam, Netherlands
+3120 6236279
+31620405695
Certified in Optimal Health

New Zealand

David Baillie, ND – Naturopathy, Consciousness, Nutrition, Massage
238 Pine Hill Rd, Dalmore, Dunedin, Otago 9010
0211220910
Certified in Optimal Health & Pregnancy

Carl Bamlet, Chiropractor – The Alpha Omega Clinic
154 Leinster Road, Strowan, Christchurch, Canterbury 8014
033562266
Certified in Optimal Health , Pregnancy & Sunlight

Norway

Randi Winsents, PSYCH-K Health and Wellness Facilitator – ReWire
Otervegen 16B, Rådal, Hordaland, 5236, Norway
4794260260
Certified in Optimal Health & Pregnancy

Portugal

Vitor Barros, Nutricionista – Vitor Dauphinet
R. Ribeira das Vinhas, 259, 4.º Dtº
Cascais, Lisboa 2750-447
966277762
Certified in Optimal Health

Russia

Igor Bondarenko, MD, Prof. Clinical/Nutritional Biochemistry – The Pathway To Health Consultancy Centre
Druskenikskiy Per. 4, St. Petersburg, 191028 Russia
7951682610
Certified in Optimal Health & Pregnancy

Saudi Arabia

Dr. Matthew Tracey – International Medical Center
P.O. BOX 2172, Jeddah, 21451 Saudi Arabia
+966126509000
Certified in Pregnancy

Slovenia

Tomaž Celcar, Natural Massage Therapy
porabska ulica 4, Gornja Radgona, 9250 Slovenia
00038641982538
Certified in Optimal Health

South Africa

Dr. Faiez Kirsten – Health Wellness & Performance Institute
62a 6th Avenue, Rondebosch East, Cape Town, Western Province 7780
+27218239728
Certified in Optimal Health

Dr Boitumelo Phetla (MD, MBA) – Wellness & Oxidative Stress Dr.
Pretoria, South Africa
Whatsapp: ‪+076 577 6715
Certified D*Practitioner

Spain

Basilio F. Hermo-Mosqueira, MD – Internal Medicine
C/Sofia Casanova,10- 2º D, Galitzia, A CORUNA
9812312311
Certified in Optimal Health & Pregnancy

United Kingdom

Cheshire

Ellen Freeborn – Clinical Science and Nutrition, University of Chester
Cloisters Laboratory, University of Chester
Parkgate Road Campus, Cheshire, Chester
1244511198
Certified in Optimal Health & Pregnancy

Nottinghamshire

David Hollands, B.Sc. – Shire Services
35 Maitland Road, Nottingham, Nottinghamshire NG5 4GT
1159930640
Certified in Optimal Health & Pregnancy

Southport

Edoardo Cervoni, Dr. Otorhinolaryngology – Locumdoctor4u Ltd.
70 Leyland Road, Southport, Merseyside PR9 9JA
01704547406
Certified in Sunlight