Dr. John W Roark, JR., MD
Gastroenterology
NPI: 1609834266 California
76/100
Good — Trusted
Trust Score based on license status, disciplinary record, board certification, experience, and data freshness.
Score Breakdown
License Status15/30
unknown
Disciplinary Record25/25
0 action(s)
Board Certification15/20
Not verified
Years in Practice15/15
20 years
Data Freshness6/10
Updated 141 days ago
License Status
State board license data has not yet been verified for this provider. The Trust Score currently reflects NPPES data only.
State board verification is being rolled out state by state.
Practice Information
- Address
- 3741 LINWOOD AVE
- OAKLAND, CA 94602
- Phone
- (510) 589-8774
- In Practice Since
- May 3, 2006
- Data Last Updated
- February 10, 2026
NPI Details
- NPI Number
- 1609834266
- Status
- Active
- Taxonomy Code
- 207RG0100X
Data sourced from CMS NPPES public database. Last verified: February 10, 2026.
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