William Samuel Yancy Jr., MD, MHS William Samuel Yancy Jr., MD, MHS
William Samuel Yancy Jr., MD, MHS

Internal Medicine Doctor

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Duke Health Provider What's this?
Duke Health providers are part of Duke’s physician network, which comprises doctors and providers at primary and specialty clinics throughout North Carolina and Virginia. Independent providers provide medical care at Duke facilities but are not employed by Duke.
Insurance

Duke Health contracts with most major health insurance carriers and transplant networks. Please call your insurance company to confirm your access to health care services at Duke Health locations and what (if any) co-payments, co-insurances and deductibles will be your responsibility. Below are the plans currently accepted in 2016. There are many changes to the plans accepted beginning January 1, 2017. For a complete list of plans accepted in 2017 and to verify that your health plan includes Duke Health, please visit PlanForDuke.com.

Click to see a list of accepted insurance plans
  • Aetna
    • Aetna Medicare Advantage - Open Access Plan (HMO)
    • Aetna Medicare Advantage - Plan (HMO, PPO)
    • Aetna Medicare Advantage - Premier Plan (PPO)
    • Aetna Medicare Advantage - Prime Plan (HMO, PPO)
    • Aetna Medicare Advantage - Select Plus (HMO, PPO)
    • Aetna Medicare Advantage - Value Plan (HMO)
    • Aetna of the Carolinas Elect Choice (EPO, HMO, QPOS, US Access, Open Access)
    • Aetna of the Carolinas Managed Choice (MC)
    • Aetna of the Carolinas Open Choice (PPO, HMO, QPOS, US Access, Open Access)
  • Blue Cross Blue Shield of NC
    • Blue Advantage
    • Blue Local - Duke Health/WakeMed
    • Blue Medicare (HMO, PPO)
    • Blue Options (123, PPO, HSA)
    • Blue Select
  • CIGNA
    • Cigna Choice Plus
    • Cigna Open Access
    • Cigna Open Access Plus
  • Coventry Healthcare
    • Carelink Duke Medical Home
    • Coventry Advantra Freedom (PPO)
    • Coventry Advantra Gold (HMO)
    • Coventry Healthcare of the Carolinas
    • Coventry National Network
    • Coventry One/Duke Medicine
  • Duke Select
    • Duke Basic
    • Duke Select
  • First Health
  • Gateway Health Alliance
  • Gateway Health Plan
    • Gateway Health Medicare Assured Choice (HMO)
    • Gateway Health Medicare Assured Prime (HMO)
    • Gateway Health Medicare Assured Select (HMO)
  • Halifax Physician-Hospital Organization
  • Healthgram
  • Humana
    • Humana ChoiceCare (PPO)
    • Humana Medicare Advantage - Choice (PPO)
    • Humana Medicare Advantage - Gold Choice (PFFS)
    • Humana Medicare Advantage - Gold Plus (HMO)
    • State Employee Health Plan (for retirees)
  • MedCost
  • Medicare
    • Medicare Part A
    • Medicare Part B
  • MultiPlan / Private Healthcare Systems
  • NC State Employees Health Plan
  • Optima Health
    • FAMIS
    • Optima Family Care (Medicaid HMO in VA)
    • Optima Individual & Family (On & Off Exchange Plans)
    • Optima Plus (PPO)
    • Optima Vantage (HMO)
  • Tricare
    • TriCare Extra*
    • TriCare for Life*
    • TriCare Prime*
    • TriCare Prime Remote*
    • TriCare Standard*
  • United Healthcare
    • AARP Medicare Complete (HMO, PPO)*
    • AARP Medicare Complete Essential (HMO)*
    • AARP Medicare Direct Essential (PFFS)*
    • All Savers Alternate Funding
    • All Savers Fully Insured
    • State Employee Health Plan (for retirees)
    • United Healthcare (HMO, PPO, POS)
    • United Healthcare Charter/Charter Balance/Charter Plus
    • United Healthcare Choice/Choice Plus
    • United Healthcare Compass
    • United Healthcare Core/Core Essential
    • United Healthcare Navigate/Navigate Plus/Navigate Balanced
    • United Healthcare of the River Valley
    • United Healthcare Option (PPO)
    • United Healthcare Options PPO with Harvard Pilgrim
    • United Healthcare Passport Connect Choice/Choice Plus
    • United Healthcare Passport Connect Options (PPO)
    • United Healthcare Select/Select Plus
    • United Medical Resources (UMR)
Contact
919-681-2863 Office number
919-668-8022
Fax number
Insurance

Duke Health contracts with most major health insurance carriers and transplant networks. Please call your insurance company to confirm your access to health care services at Duke Health locations and what (if any) co-payments, co-insurances and deductibles will be your responsibility. Below are the plans currently accepted in 2016. There are many changes to the plans accepted beginning January 1, 2017. For a complete list of plans accepted in 2017 and to verify that your health plan includes Duke Health, please visit PlanForDuke.com.

Click to see a list of accepted insurance plans

  • Aetna
    • Aetna Medicare Advantage - Open Access Plan (HMO)
    • Aetna Medicare Advantage - Plan (HMO, PPO)
    • Aetna Medicare Advantage - Premier Plan (PPO)
    • Aetna Medicare Advantage - Prime Plan (HMO, PPO)
    • Aetna Medicare Advantage - Select Plus (HMO, PPO)
    • Aetna Medicare Advantage - Value Plan (HMO)
    • Aetna of the Carolinas Elect Choice (EPO, HMO, QPOS, US Access, Open Access)
    • Aetna of the Carolinas Managed Choice (MC)
    • Aetna of the Carolinas Open Choice (PPO, HMO, QPOS, US Access, Open Access)
  • Blue Cross Blue Shield of NC
    • Blue Advantage
    • Blue Local - Duke Health/WakeMed
    • Blue Medicare (HMO, PPO)
    • Blue Options (123, PPO, HSA)
    • Blue Select
  • CIGNA
    • Cigna Choice Plus
    • Cigna Open Access
    • Cigna Open Access Plus
  • Coventry Healthcare
    • Carelink Duke Medical Home
    • Coventry Advantra Freedom (PPO)
    • Coventry Advantra Gold (HMO)
    • Coventry Healthcare of the Carolinas
    • Coventry National Network
    • Coventry One/Duke Medicine
  • Duke Select
    • Duke Basic
    • Duke Select
  • First Health
  • Gateway Health Alliance
  • Gateway Health Plan
    • Gateway Health Medicare Assured Choice (HMO)
    • Gateway Health Medicare Assured Prime (HMO)
    • Gateway Health Medicare Assured Select (HMO)
  • Halifax Physician-Hospital Organization
  • Healthgram
  • Humana
    • Humana ChoiceCare (PPO)
    • Humana Medicare Advantage - Choice (PPO)
    • Humana Medicare Advantage - Gold Choice (PFFS)
    • Humana Medicare Advantage - Gold Plus (HMO)
    • State Employee Health Plan (for retirees)
  • MedCost
  • Medicare
    • Medicare Part A
    • Medicare Part B
  • MultiPlan / Private Healthcare Systems
  • NC State Employees Health Plan
  • Optima Health
    • FAMIS
    • Optima Family Care (Medicaid HMO in VA)
    • Optima Individual & Family (On & Off Exchange Plans)
    • Optima Plus (PPO)
    • Optima Vantage (HMO)
  • Tricare
    • TriCare Extra*
    • TriCare for Life*
    • TriCare Prime*
    • TriCare Prime Remote*
    • TriCare Standard*
  • United Healthcare
    • AARP Medicare Complete (HMO, PPO)*
    • AARP Medicare Complete Essential (HMO)*
    • AARP Medicare Direct Essential (PFFS)*
    • All Savers Alternate Funding
    • All Savers Fully Insured
    • State Employee Health Plan (for retirees)
    • United Healthcare (HMO, PPO, POS)
    • United Healthcare Charter/Charter Balance/Charter Plus
    • United Healthcare Choice/Choice Plus
    • United Healthcare Compass
    • United Healthcare Core/Core Essential
    • United Healthcare Navigate/Navigate Plus/Navigate Balanced
    • United Healthcare of the River Valley
    • United Healthcare Option (PPO)
    • United Healthcare Options PPO with Harvard Pilgrim
    • United Healthcare Passport Connect Choice/Choice Plus
    • United Healthcare Passport Connect Options (PPO)
    • United Healthcare Select/Select Plus
    • United Medical Resources (UMR)

Contact
WHERE I PROVIDE CARE
  • 4220 N. Roxboro St.

    Durham, NC 27704

Profile
ABOUT ME

I am a general internal medicine doctor and clinical researcher and have focused my career on the management of obesity. I became interested in weight management during my training because I recognized that I could treat my patients’ health problems more effectively if I could help them manage their weight. I grew up in Durham and came back after residency to join Duke Health. In 2015, I became Director of the Duke Diet and Fitness Center and certified in obesity medicine. Duke Diet and Fitness is a multidisciplinary center with experts in medicine, nutrition, fitness and behavior.

LANGUAGES I SPEAK
English
Training
EDUCATION
MD, Brody School of Medicine at East Carolina University (North Carolina), 1995
MHS, Duke University, 2001
RESIDENCY
Internal Medicine, University of Pittsburgh Medical Center, 1995-1998 (Chief Resident, University of Pittsburgh Medical Center, 1999)
FELLOWSHIP
General Internal Medicine, Duke University Medical Center, 1999-2001
BOARD CERTIFICATION
American Board of Internal Medicine, Internal Medicine
Clinical focus and research
MY RESEARCH INTERESTS

I have led numerous clinical trials investigating the safety, effectiveness, tolerability and feasibility of diets and medications for weight management. Through this research, I have developed particular expertise with the low-carbohydrate ketogenic diet, the low-glycemic load diet and the low-fat/reduced-calorie diet. I have also led studies examining the relationship of obesity with health, health care use and quality of life. My recent projects focus on improving the long-term adherence to lifestyle modifications related to weight management and use novel behavioral counseling, technology, behavioral economics and health care system redesign. I have received several awards for my research including two VA Research Career Development awards, The Obesity Society’s Ethan Sims Young Investigator Award, the Presidential Early Career Award for Scientists and Engineers (PECASE) and the Nutrition & Metabolism Society Award for Excellence in Nutrition & Metabolism. I also received the Duke University School of Medicine Excellence in Professionalism Award.

Industry relationships and collaborations
This faculty member has no reported relationships with industry.