John Brown, MD
NPI 1053355941 · Emergency Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Brown, MD is a Emergency Medicine Physician provider in San Francisco, CA (NPI 1053355941).
Provider details
- NPI number
- 1053355941
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- G57855 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Brown's NPI number?
- John Brown's National Provider Identifier (NPI) is 1053355941, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Brown's specialty?
- John Brown is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Brown located?
- John Brown's practice location on file with NPPES is 1001 Portrero Ave, San Francisco, CA 94110-3518.
- What is John Brown's phone number?
- The practice phone number listed in the NPPES registry for John Brown is (415) 206-5753.
- Does John Brown accept Medicare?
- John Brown is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Brown's NPI active?
- Yes — John Brown's NPI (1053355941) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.