Quick answers
- Which hospitals does Seyed Tamjidi work at?
- Medicare's official clinician data lists Seyed Tamjidi at 2 hospitals: Antelope Valley Hospital and Sutter Coast Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Seyed Tamjidi see patients?
- Medicare's clinician data lists 2 practice locations, including Lancaster, CA and Clovis, CA. Call before your visit to confirm the address.
- What is Seyed Tamjidi's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Seyed Tamjidi accept Medicare assignment?
- Yes. Medicare's clinician data says Seyed Tamjidi 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 Seyed Tamjidi?
- (800) 967-2289, as listed in official Medicare / NPI Registry data.
- What is Seyed Tamjidi's NPI number?
- 1407923428. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Seyed Tamjidi works
Medicare's Facility Affiliation Data lists Seyed Tamjidi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Antelope Valley HospitalLancaster, CA · Acute Care Hospital · CCN 050056
- Sutter Coast HospitalCrescent City, CA · Acute Care Hospital · CCN 050417
Practice locations
Addresses where Seyed Tamjidi is enrolled with Medicare (CMS data updated 2026-10-02).
- 1600 W Ave JLancaster, CA 93534 (800) 967‑2289
- 2755 Herndon AveClovis, CA 93611 (800) 967‑2289
Group practices
Medicare enrollment lists Seyed Tamjidi 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 Lancaster
Clinicians with the same Medicare primary specialty in Lancaster, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1974 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407923428 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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