Quick answers
- Which hospitals does Masis Isikbay work at?
- Medicare's official clinician data lists Masis Isikbay at 5 hospitals: California Pacific Medical Center-Davies Campus Hospital, Peninsula Medical Center, UCSF Health St. Mary's Hospital, UCSF Medical Center and Zuckerberg San Francisco General Hospital & Trauma Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Masis Isikbay see patients?
- Medicare's clinician data lists 8 practice locations, including San Francisco, CA, Burlingame, CA and Berkeley, CA. Call before your visit to confirm the address.
- What is Masis Isikbay's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Masis Isikbay accept Medicare assignment?
- Yes. Medicare's clinician data says Masis Isikbay 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 Masis Isikbay?
- (628) 206-5871, as listed in official Medicare / NPI Registry data.
- What is Masis Isikbay's NPI number?
- 1699279166. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Masis Isikbay works
Medicare's Facility Affiliation Data lists Masis Isikbay at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- California Pacific Medical Center-Davies Campus HospitalSan Francisco, CA · Acute Care Hospital · CCN 050008
- Peninsula Medical CenterBurlingame, CA · Acute Care Hospital · CCN 050007
- UCSF Health St. Mary's HospitalSan Francisco, CA · Acute Care Hospital · CCN 050457
- UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · CCN 050454
- Zuckerberg San Francisco General Hospital & Trauma CenterSan Francisco, CA · Acute Care Hospital · CCN 050228
Practice locations
Addresses where Masis Isikbay is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 1001 Potrero AveSan Francisco, CA 94110 (628) 206‑5871
- 1600 Divisadero St, McB302San Francisco, CA 94115 (415) 476‑1000
- 185 Berry StSan Francisco, CA 94107 (415) 476‑1000
- 225 California DrBurlingame, CA 94010 (650) 341‑9131
- 2330 Post StSan Francisco, CA 94115 (415) 476‑4029
Group practices
Medicare enrollment lists Masis Isikbay as a member of these groups (CMS data updated 2026-10-02).
- University of California San Francisco1,839 clinicians in the group
- UCSF Medical Group Business Services1,598 clinicians in the group
- University of California SFGH Medical Group587 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699279166 |
| 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