Quick answers
- Which hospitals does Alex Penn work at?
- Medicare's official clinician data lists Alex Penn at 5 hospitals: El Camino Health, Good Samaritan Hospital, NorthBay Medical Center, Santa Clara Valley Medical Center and Sutter Delta Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alex Penn see patients?
- Medicare's clinician data lists 9 practice locations, including Fairfield, CA, Antioch, CA and Honolulu, HI. Call before your visit to confirm the address.
- What is Alex Penn's specialty?
- Medicare lists Interventional Radiology as the primary specialty, and also Diagnostic Radiology.
- Does Alex Penn accept Medicare assignment?
- Yes. Medicare's clinician data says Alex Penn 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 Alex Penn?
- (707) 646-4646, as listed in official Medicare / NPI Registry data.
- What is Alex Penn's NPI number?
- 1972881159. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alex Penn works
Medicare's Facility Affiliation Data lists Alex Penn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- El Camino HealthMountain View, CA · Acute Care Hospital · CCN 050308
- Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · CCN 050380
- NorthBay Medical CenterFairfield, CA · Acute Care Hospital · CCN 050367
- Santa Clara Valley Medical CenterSan Jose, CA · Acute Care Hospital · CCN 050038
- Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · CCN 050523
Practice locations
Addresses where Alex Penn is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 101 B Gale Wilson Blvd, Suite 100Fairfield, CA 94533 (707) 646‑4646
- 1100 B Gale Wilson BlvdFairfield, CA 94533 (707) 646‑4646
- 1101 B Gale Wilson Blvd, Suite 100Fairfield, CA 94533 (707) 646‑4646
- 1200 B Gale Wilson BlvdFairfield, CA 94533 (707) 429‑3600
- 1320 Travis Blvd, Suite CFairfield, CA 94533 (707) 646‑4000
Group practices
Medicare enrollment lists Alex Penn as a member of these groups (CMS data updated 2026-10-02).
- County of Santa Clara1,022 clinicians in the group
- NorthBay Physicians Surgery Center, LLC324 clinicians in the group
- Bay Imaging Consultants Medical Group Inc146 clinicians in the group
- Solano Diagnostics Partners a Calif Limited Partnership45 clinicians in the group
Specialties
- Interventional Radiologyprimary
- Diagnostic Radiologyalso
Other interventional radiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972881159 |
| 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