Search › California › Gastroenterology Physician
John Roark, MD
NPI 1609834266 · on the registry since 2006
Practice
- Address
- 3741 Linwood Ave
Oakland, CA 94602 - Phone
- (510) 589-8774
Registry record
- Primary taxonomy
- Gastroenterology Physician
207RG0100X
- Licence states on file
- CA
From the registry's licence fields, which are often incomplete.
- Sex
- Male
- Record last updated
- 2026-02-10
Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in California