Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
DR. JOHN W ROARK JR., MD
ActiveGastroenterology · OAKLAND, CA
Registration Details
- NPI Number
- 1609834266
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- May 3, 2006 (19.97022543659 yrs)
- Last Updated
- Feb 10, 2026
- License
-
G038581 (CA)
Practice Information
- Address
-
3741 LINWOOD AVEOAKLAND, CA, 946021711Browse CA providers · Browse ZIP 94602
- Phone
- 5105898774
- Primary Specialty
-
Gastroenterology
207RG0100X
Other Gastroenterology Providers in OAKLAND, CA
| Name | Credential | NPI |
|---|---|---|
| EDDIE C CHEUNG | MD | 1255305447 |
| DR. NEIL H STOLLMAN | MD | 1225095763 |
| DR. SILVIA M VILLAGOMEZ | MD | 1790743359 |
| DR. EARL MICHAEL DARBY | MD | 1790743292 |
| DR. DANNY WU | MD | 1235197898 |
| DR. THOMAS B HARGRAVE III | MD | 1023076692 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.