Quick answers
- Where does Jonathan N. Tam see patients?
- Medicare's clinician data lists 2 practice locations, including Pasadena, CA and Palmdale, CA. Call before your visit to confirm the address.
- What is Jonathan N. Tam's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Jonathan N. Tam accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan N. Tam 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 Jonathan N. Tam?
- (626) 449-2800, as listed in official Medicare / NPI Registry data.
- What is Jonathan N. Tam's NPI number?
- 1013942952. 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 Jonathan N. Tam is enrolled with Medicare (CMS data updated 2026-10-02).
- 105 N Hill Ave, Suite 203Pasadena, CA 91106 (626) 449‑2800
- 38600 Medical Ctr DrPalmdale, CA 93551 (864) 908‑3530
Group practices
Medicare enrollment lists Jonathan N. Tam as a member of this group (CMS data updated 2026-10-02).
- Obhg California PC94 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Pasadena
Clinicians with the same Medicare primary specialty in Pasadena, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1013942952 |
| 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