Quick answers
- Which hospitals does Si V. Nguyen work at?
- Medicare's official clinician data lists Si V. Nguyen at 5 hospitals: Garden Grove Hospital & Medical Center, Huntington Beach Hospital, La Palma Intercommunity Hospital, Memorialcare Saddleback Medical Center and West Anaheim Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Si V. Nguyen see patients?
- Medicare's clinician data lists 2 practice locations, including Garden Grove, CA and Redlands, CA. Call before your visit to confirm the address.
- What is Si V. Nguyen's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Si V. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Si V. Nguyen 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 Si V. Nguyen?
- (949) 874-0827, as listed in official Medicare / NPI Registry data.
- What is Si V. Nguyen's NPI number?
- 1841234952. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Si V. Nguyen works
Medicare's Facility Affiliation Data lists Si V. Nguyen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Garden Grove Hospital & Medical CenterGarden Grove, CA · Acute Care Hospital · CCN 050230
- Huntington Beach HospitalHuntington Beach, CA · Acute Care Hospital · CCN 050526
- La Palma Intercommunity HospitalLa Palma, CA · Acute Care Hospital · CCN 050580
- Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · CCN 050603
- West Anaheim Medical CenterAnaheim, CA · Acute Care Hospital · CCN 050426
Practice locations
Addresses where Si V. Nguyen is enrolled with Medicare (CMS data updated 2026-10-02).
- 12601 Garden Grove BlvdGarden Grove, CA 92843 (949) 874‑0827
- 350 Terracina BlvdRedlands, CA 92373 (909) 335‑5500
Group practices
Medicare enrollment lists Si V. Nguyen as a member of these groups (CMS data updated 2026-10-02).
- Affiliated Pathologists Medical Group, Inc.45 clinicians in the group
- Garden Grove Pathology Medical Group PC2 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At San Antonio |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841234952 |
| 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