James Allen, D.O.
Internal Medicine Physician · San Ramon, CA
James Allen, D.O. is an internal medicine physician with a practice address in San Ramon, California, and NPI 1902099518, issued on Aug 27, 2007. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Allen
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 159380-1 NY
OP61072641 WA
Self-reported in NPPES; status is on the state search - Practice location
- 6001 Bollinger Canyon RD, San Ramon, CA 94583
- Phone
- (925) 842-3224
- Enumerated
- Aug 27, 2007
- Entity
- Type 1 · individual
Also registered at 6001 Bollinger Canyon RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephen Frangos, MDPreventive Medicine/Occupational Environmental Medicine Physician1962986596
Verify James Allen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
One hospital or facility affiliation
- Sea Mar Community Health CentersAberdeen, WA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
25 internal medicine physician records list a San Ramon practice address
They are 25 of the 2,281 NPPES records with a San Ramon practice address, and 20,403 internal medicine physician records in California.
All 25 in San Ramon → All 20,403 in California → Every provider in San Ramon →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is James Allen, D.O.'s NPI number?
James Allen, D.O.'s National Provider Identifier (NPI) is 1902099518, issued on Aug 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James Allen, D.O. located?
The NPPES record lists a practice address at 6001 Bollinger Canyon RD, San Ramon, CA, 94583. Phone: (925) 842-3224. Providers update this record themselves, so call before visiting.
How can I verify James Allen, D.O.'s license?
Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.