William E. O'Quinn, MD
Internal Medicine, Primary Care

4.8 out of 5 –
233 ratingsA board-certified family physician since 1978, William E. O'Quinn, MD, has practiced in Branchville for nearly five decades. His patients know him not only for his medical expertise, but also for his steadfast compassion, accessibility, and commitment to providing high-quality care.
Throughout his career, Dr. O'Quinn has served in numerous leadership and mentorship roles. He has precepted physician assistants, nurse practitioners, medical students, and family medicine residents, helping to prepare the next generation of healthcare providers.
Additionally, Dr. O'Quinn has been a strong voice in organized medicine. He is a past president and board chair of the South Carolina Academy of Family Physicians, and an active member of both the American Academy of Family Physicians and the South Carolina Medical Association. His dedication extends beyond medicine-he has served his community for decades as a member of local school boards and through military service in the U.S. Army Medical Corps.
For Dr. O'Quinn, family medicine is not just a profession but a lifelong calling. His deep roots in Branchville and his unwavering commitment to the health and well-being of his patients make him a trusted physician and a cornerstone of his community.
Throughout his career, Dr. O'Quinn has served in numerous leadership and mentorship roles. He has precepted physician assistants, nurse practitioners, medical students, and family medicine residents, helping to prepare the next generation of healthcare providers.
Additionally, Dr. O'Quinn has been a strong voice in organized medicine. He is a past president and board chair of the South Carolina Academy of Family Physicians, and an active member of both the American Academy of Family Physicians and the South Carolina Medical Association. His dedication extends beyond medicine-he has served his community for decades as a member of local school boards and through military service in the U.S. Army Medical Corps.
For Dr. O'Quinn, family medicine is not just a profession but a lifelong calling. His deep roots in Branchville and his unwavering commitment to the health and well-being of his patients make him a trusted physician and a cornerstone of his community.

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Provider Information
Insurance Coverage
Insurance plans vary by individual. Please contact your insurance provider to check your coverage.
- Absolute Total Care (NEIC)
- Absolute Total Care Healthy Connections Prime Dual Medicare/Medicaid Plan
- Aetna (Exclusive Choice)
- Aetna (Managed Choice)
- Aetna (Open Choice)
- Aetna (Preferred Provider Organization)
- Aetna Medicare
- AllWell by Absolute Total Care
- Ambetter from Absolute Total Care (Marketplace)
- BCBS Blue Essentials (Marketplace)
- Blue Choice Blue Option (Marketplace)
- Blue Choice Medicaid
- Blue Cross Blue Shield Blue Choice HealthCare (Group Health Plan)
- Blue Cross Blue Shield Federal (FEP)
- Blue Cross Blue Shield Medicare
- Blue Cross Blue Shield Planned Administrators
- Blue Cross Blue Shield Preferred Blue (PPC)
- Blue Cross Blue Shield State Health Plan for South Carolina
- Cigna
- Cigna Medicare
- Clover Health
- Coventry
- Employers Health Network (EHN)
- First Choice Next
- First Choice VIP Care Plus Healthy Connections Prime Dual Medicare/Medicaid Plan
- First Choice/Select Health (NEIC)
- First Health
- Great West Healthcare (Part of Cigna now)
- Healthy Blue Medicaid by Blue Choice
- Humana ChoiceCare PPO (Group Health Plan) (through March 31, 2025)
- Humana Healthy Horizons (through March 31, 2025)
- Humana Medicare (through March 31, 2025)
- Medcost
- Medicare A & B (Traditional Medicare)
- Molina Healthcare
- Molina Healthy Connections Prime Dual Medicare/Medicaid Plan
- Tricare
- United HealthCare
- Veterans' Affairs Community Care Network (CCN)
- WellCare
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Map & Directions
MUSC Health Primary Care - Branchville
215 Dorange RdBranchville, SC 29432