Quick answers
- Which hospitals does Nathaniel D. Vonfischer work at?
- Medicare's official clinician data lists Nathaniel D. Vonfischer at 2 hospitals: Kaiser Foundation Hospital - South San Francisco and Kaiser Foundation Hospital-Santa Rosa. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nathaniel D. Vonfischer see patients?
- Medicare's clinician data lists 1 practice location in South San Francisco, CA. Call before your visit to confirm the address.
- What is Nathaniel D. Vonfischer's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Nathaniel D. Vonfischer accept Medicare assignment?
- Yes. Medicare's clinician data says Nathaniel D. Vonfischer 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 Nathaniel D. Vonfischer?
- (650) 742-2000, as listed in official Medicare / NPI Registry data.
- What is Nathaniel D. Vonfischer's NPI number?
- 1922251024. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nathaniel D. Vonfischer works
Medicare's Facility Affiliation Data lists Nathaniel D. Vonfischer 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 - South San FranciscoSouth San Francisco, CA · Acute Care Hospital · CCN 050070
- Kaiser Foundation Hospital-Santa RosaSanta Rosa, CA · Acute Care Hospital · CCN 050690
Practice locations
Addresses where Nathaniel D. Vonfischer is enrolled with Medicare (CMS data updated 2026-10-02).
- 1200 El Camino RealSouth San Francisco, CA 94080 (650) 742‑2000
Group practices
Medicare enrollment lists Nathaniel D. Vonfischer as a member of this group (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in South San Francisco
Clinicians with the same Medicare primary specialty in South San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922251024 |
| 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