Scientific Advisory Board
Dr. Reagan Major, DO
Psychiatry Resident Physician
Dr. Reagan Major is a psychiatry resident physician at HCA Healthcare TriStar Centennial Medical Center in Nashville, Tennessee. Before medical school she co-authored research on synaptic dysfunction.
- Psychiatry
- Mental health
- Synaptic function research
- Degree
- DO, Lincoln Memorial University DeBusk College of Osteopathic Medicine
- Training
- Psychiatry residency, HCA Healthcare TriStar Centennial
- Location
- Nashville, Tennessee
- Research
- Synaptic function
About Dr. Major
Dr. Reagan Major, DO, is a psychiatry resident physician at HCA Healthcare TriStar Centennial Medical Center in Nashville, Tennessee.
She earned her Doctor of Osteopathic Medicine at Lincoln Memorial University DeBusk College of Osteopathic Medicine, class of 2023.
Before medical school she co-authored a 2019 paper in Medical Hypotheses proposing that delirium and hospital-acquired weakness share a common basis in synaptic dysfunction.
Outside the hospital she serves on the Young Professionals Board of The Next Door Recovery, a Nashville nonprofit that provides substance use and mental health services for women.
Dr. Major is a member of the Physician's Choice Scientific Advisory Board.
Training and credentials
- 2023Doctor of Osteopathic Medicine (DO)Lincoln Memorial University DeBusk College of Osteopathic Medicine
- Residency, PsychiatryHCA Healthcare TriStar Centennial Medical Center, Nashville
Research
With Physician's Choice
Part of the team behind our formulas
Physician's Choice formulas are developed in collaboration with our Scientific Advisory Board, a team of doctors, researchers and health professionals across six specialties.
The board meets quarterly.
Scientific Advisory Board
Meet the rest of the board
Sources for this profile (6)
- thenextdoorrecovery.org: https://thenextdoorrecovery.org/about-us/our-team/
- PubMed, US National Library of Medicine: https://pubmed.ncbi.nlm.nih.gov/30798902/
- NPI Registry, US Centers for Medicare and Medicaid Services: https://npiregistry.cms.hhs.gov/api/?version=2.1&first_name=Reagan&last_name=Major
- doximity.com: https://www.doximity.com/pub/reagan-major-do
- thenextdoorrecovery.org: https://thenextdoorrecovery.org/about-us/the-organization/
- Physician's Choice: https://physicianschoice.com/pages/physicians-choice-scientific-advisory-board
Facts on this page were checked against the sources listed above on October 21, 2026.