Quick answers
- Which hospitals does Judy A. Alonzo work at?
- Medicare's official clinician data lists Judy A. Alonzo at 5 hospitals: California Pacific Medical Center- Van Ness Campus, El Camino Health, Novato Community Hospital, Peninsula Medical Center and Sequoia Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Judy A. Alonzo see patients?
- Medicare's clinician data lists 7 practice locations, including San Mateo, CA, Burlingame, CA and Redwood City, CA. Call before your visit to confirm the address.
- What is Judy A. Alonzo's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Judy A. Alonzo accept Medicare assignment?
- Yes. Medicare's clinician data says Judy A. Alonzo 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 Judy A. Alonzo?
- (650) 348-8550, as listed in official Medicare / NPI Registry data.
- What is Judy A. Alonzo's NPI number?
- 1124040787. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Judy A. Alonzo works
Medicare's Facility Affiliation Data lists Judy A. Alonzo 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
- El Camino HealthMountain View, CA · Acute Care Hospital · CCN 050308
- Novato Community HospitalNovato, CA · Acute Care Hospital · CCN 050131
- Peninsula Medical CenterBurlingame, CA · Acute Care Hospital · CCN 050007
- Sequoia HospitalRedwood City, CA · Acute Care Hospital · CCN 050197
Practice locations
Addresses where Judy A. Alonzo is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 100 S San Mateo DrSan Mateo, CA 94401 (650) 348‑8550
- 1501 Trousdale DrBurlingame, CA 94010 (650) 696‑5400
- 170 Alameda De Las PulgasRedwood City, CA 94062
- 2500 Grant RdMountain View, CA 94040 (650) 616‑2951
- 3555 Cesar ChavezSan Francisco, CA 94110 (650) 616‑2951
Group practices
Medicare enrollment lists Judy A. Alonzo as a member of this group (CMS data updated 2026-10-02).
- Peninsula Pathologists Medical Group Inc17 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in San Mateo
Clinicians with the same Medicare primary specialty in San Mateo, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Colorado School Of Medicine, Denver |
| Graduation year | 1992 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124040787 |
| 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