John Randolph Balmes, MD
Internal Medicine Physician · San Francisco, CA
John Randolph Balmes, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1851478374, issued on Nov 1, 2006. Check the license (California G48421, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Randolph Balmes
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G48421 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1001 Potrero Avenue, San Francisco, CA 94110
- Phone
- (415) 206-5200
- Enumerated
- Nov 1, 2006
- Record last updated
- Sep 11, 2025
- Fax
- (415) 206-8949
- Medicaid ID
- 00G484210 CA
- Entity
- Type 1 · individual
Also registered at 1001 Potrero Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Randolph Balmes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G48421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,318 in San Francisco → All 17,696 in California → Every provider in San Francisco →
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Common questions
What is John Randolph Balmes, MD's NPI number?
John Randolph Balmes, MD's National Provider Identifier (NPI) is 1851478374, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Randolph Balmes, MD located?
The NPPES record lists a practice address at 1001 Potrero Avenue, San Francisco, CA, 94110. Phone: (415) 206-5200. Providers update this record themselves, so call before visiting.
How can I verify John Randolph Balmes, MD's license?
NPPES lists California license number G48421, as entered by the provider. 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), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.