John F. Brown, MD
Emergency Medicine Physician · San Francisco, CA
John F. Brown, MD is an emergency medicine physician with a practice address in San Francisco, California, and NPI 1053355941, issued on Jun 15, 2006. Check the license (California G57855, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John F. Brown
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G57855 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1001 Portrero Ave, San Francisco, CA 94110
- Phone
- (415) 206-5753
- Enumerated
- Jun 15, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (415) 206-5818
- Medicaid ID
- 00G578550 CA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1001 Portrero Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John F. Brown in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G57855Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 91.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
John F. Brown among 7,751 emergency medicine physician records in California
John F. Brown, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Francisco → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Ritik Chandra, MDSan Francisco, CA 941101700838737
- Rachel Chin, MDSan Francisco, CA 941101477597375
- Christopher Colwell, MDSan Francisco, CA 941101629092788
- Alan Gelb, MDSan Francisco, CA 941101497796213
- Eric Isaacs, MDSan Francisco, CA 941101356385231
- Todd Kessinger, MDSan Francisco, CA 941101255374732
- Judith Klein, MDSan Francisco, CA 941101235171638
- Michelle Lin, MDSan Francisco, CA 941101831131416
Common questions
What is John F. Brown, MD's NPI number?
John F. Brown, MD's National Provider Identifier (NPI) is 1053355941, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John F. Brown, MD located?
The NPPES record lists a practice address at 1001 Portrero Ave, San Francisco, CA, 94110. Phone: (415) 206-5753. Providers update this record themselves, so call before visiting.
How can I verify John F. Brown, MD's license?
NPPES lists California license number G57855, 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.
What is John F. Brown, MD's MIPS final score?
The 2023 MIPS final score is 91.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
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.