Quick answers
- Which hospitals does Sumie Iwasaki work at?
- Medicare's official clinician data lists Sumie Iwasaki at 1 hospital: Kaiser Foundation Hospital - San Francisco. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sumie Iwasaki see patients?
- Medicare's clinician data lists 1 practice location in San Francisco, CA. Call before your visit to confirm the address.
- What is Sumie Iwasaki's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does Sumie Iwasaki accept Medicare assignment?
- Yes. Medicare's clinician data says Sumie Iwasaki 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 Sumie Iwasaki?
- (415) 833-2200, as listed in official Medicare / NPI Registry data.
- What is Sumie Iwasaki's NPI number?
- 1790945541. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sumie Iwasaki works
Medicare's Facility Affiliation Data lists Sumie Iwasaki at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaiser Foundation Hospital - San FranciscoSan Francisco, CA · Acute Care Hospital · CCN 050076
Practice locations
Addresses where Sumie Iwasaki is enrolled with Medicare (CMS data updated 2026-10-02).
- 2238 Geary BlvdSan Francisco, CA 94115 (415) 833‑2200
Group practices
Medicare enrollment lists Sumie Iwasaki as a member of this group (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1790945541 |
| 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