Quick answers
- Which hospitals does Begum S. Sezer work at?
- Medicare's official clinician data lists Begum S. Sezer at 2 hospitals: Saint Rose Dominican Hospitals - Siena Campus and Santa Monica - UCLA Medical Center & Orthopaedic Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Begum S. Sezer see patients?
- Medicare's clinician data lists 5 practice locations, including Thousand Oaks, CA, Santa Monica, CA and Redondo Beach, CA. Call before your visit to confirm the address.
- What is Begum S. Sezer's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Begum S. Sezer accept Medicare assignment?
- Yes. Medicare's clinician data says Begum S. Sezer 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 Begum S. Sezer?
- (805) 418-3500, as listed in official Medicare / NPI Registry data.
- What is Begum S. Sezer's NPI number?
- 1891157939. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Begum S. Sezer works
Medicare's Facility Affiliation Data lists Begum S. Sezer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Saint Rose Dominican Hospitals - Siena CampusHenderson, NV · Acute Care Hospital · CCN 290045
- Santa Monica - UCLA Medical Center & Orthopaedic HospitalSanta Monica, CA · Acute Care Hospital · CCN 050112
Practice locations
Addresses where Begum S. Sezer is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Moody Ct, Suite 200Thousand Oaks, CA 91360 (805) 418‑3500
- 1245 16th StSanta Monica, CA 90404
- 2020 Santa Monica Blvd, Suite 210Santa Monica, CA 90404 (310) 458‑2381
- 248 Hampshire Rd, Suite 100Thousand Oaks, CA 91361 (805) 370‑0040
- 514 N Prospect AveRedondo Beach, CA 90277 (310) 937‑8555
Group practices
Medicare enrollment lists Begum S. Sezer as a member of this group (CMS data updated 2026-10-02).
- The Regents of the University of California1,462 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Thousand Oaks
Clinicians with the same Medicare primary specialty in Thousand Oaks, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891157939 |
| 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