Quick answers
- Where does John M. Martinez see patients?
- Medicare's clinician data lists 7 practice locations, including San Bruno, CA, San Francisco, CA and Daly City, CA. Call before your visit to confirm the address.
- What is John M. Martinez's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does John M. Martinez accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Martinez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John M. Martinez?
- (650) 270-2395, as listed in official Medicare / NPI Registry data.
- What is John M. Martinez's NPI number?
- 1003844507. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John M. Martinez is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1310 El Camino Real, Suite I JSan Bruno, CA 94066 (650) 270‑2395
- 199 W Portal AveSan Francisco, CA 94127 (415) 821‑8798
- 2395 Lombard StSan Francisco, CA 94123 (415) 796‑2242
- 325 Gellert BlvdDaly City, CA 94015 (650) 270‑2394
- 3838 California St, Rm 111San Francisco, CA 94118 (415) 221‑6476
Group practices
Medicare enrollment lists John M. Martinez as a member of this group (CMS data updated 2026-10-02).
- UCSF Health Medical Foundation66 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albany Medical College Of Union University |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003844507 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians