Quick answers
- Which hospitals does Masami Hattori work at?
- Medicare's official clinician data lists Masami Hattori at 3 hospitals: California Pacific Medical Center- Van Ness Campus, California Pacific Medical Center-Davies Campus Hospital and UCSF Health St. Mary's Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Masami Hattori see patients?
- Medicare's clinician data lists 1 practice location in San Francisco, CA. Call before your visit to confirm the address.
- What is Masami Hattori's specialty?
- Medicare lists Anesthesiology as the primary specialty, and also Pain Management.
- Does Masami Hattori accept Medicare assignment?
- Yes. Medicare's clinician data says Masami Hattori 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.
- Does Masami Hattori offer telehealth?
- Medicare's clinician data says Masami Hattori offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Masami Hattori?
- (415) 292-7956, as listed in official Medicare / NPI Registry data.
- What is Masami Hattori's NPI number?
- 1306938055. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Masami Hattori works
Medicare's Facility Affiliation Data lists Masami Hattori 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- Van Ness CampusSan Francisco, CA · Acute Care Hospital · CCN 050047
- California Pacific Medical Center-Davies Campus HospitalSan Francisco, CA · Acute Care Hospital · CCN 050008
- UCSF Health St. Mary's HospitalSan Francisco, CA · Acute Care Hospital · CCN 050457
Practice locations
Addresses where Masami Hattori is enrolled with Medicare (CMS data updated 2026-10-02).
- 2250 Hayes St, Suite 501San Francisco, CA 94117 (415) 292‑7956
Group practices
Medicare enrollment lists Masami Hattori as a member of this group (CMS data updated 2026-10-02).
- Masami Hattori MD Inc.2 clinicians in the group
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1306938055 |
| 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