Quick answers
- Which hospitals does John A. Tayek work at?
- Medicare's official clinician data lists John A. Tayek at 1 hospital: Lac/Harbor-Ucla Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John A. Tayek see patients?
- Medicare's clinician data lists 2 practice locations, including Torrance, CA and Los Angeles, CA. Call before your visit to confirm the address.
- What is John A. Tayek's specialty?
- Medicare lists Endocrinology as the primary specialty.
- Does John A. Tayek accept Medicare assignment?
- Yes. Medicare's clinician data says John A. Tayek 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 A. Tayek?
- (310) 222-5026, as listed in official Medicare / NPI Registry data.
- What is John A. Tayek's NPI number?
- 1649389644. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John A. Tayek works
Medicare's Facility Affiliation Data lists John A. Tayek at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Lac/Harbor-Ucla Medical CenterTorrance, CA · Acute Care Hospital · CCN 050376
Practice locations
Addresses where John A. Tayek is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 W Carson StTorrance, CA 90502 (310) 222‑5026
- 12021 S Wilmington Ave, Room 1059Los Angeles, CA 90059
Group practices
Medicare enrollment lists John A. Tayek as a member of this group (CMS data updated 2026-10-02).
- County of Los Angeles397 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Torrance
Clinicians with the same Medicare primary specialty in Torrance, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 1980 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649389644 |
| 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