Overview
John Roark is a Gastroenterologist in Oakland, California. His top areas of expertise are Ulcerative Colitis, Benign Esophageal Stricture, and Lower Esophageal Ring.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICAID
- STATE MEDICAID
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
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Stanford Health Care
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Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Experienced
- Benign Esophageal StrictureDr. Roark isExperienced. Learn about Benign Esophageal Stricture.
- Lower Esophageal RingDr. Roark isExperienced. Learn about Lower Esophageal Ring.
- Ulcerative ColitisDr. Roark isExperienced. Learn about Ulcerative Colitis.