Quick answers
- Which hospitals does William Hsueh work at?
- Medicare's official clinician data lists William Hsueh at 2 hospitals: Pomona Valley Hospital Medical Center and San Antonio Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Hsueh see patients?
- Medicare's clinician data lists 2 practice locations, including Pomona, CA and Rancho Cucamonga, CA. Call before your visit to confirm the address.
- What is William Hsueh's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does William Hsueh accept Medicare assignment?
- Yes. Medicare's clinician data says William Hsueh 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 William Hsueh?
- (909) 655-0300, as listed in official Medicare / NPI Registry data.
- What is William Hsueh's NPI number?
- 1972948164. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William Hsueh works
Medicare's Facility Affiliation Data lists William Hsueh at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Pomona Valley Hospital Medical CenterPomona, CA · Acute Care Hospital · CCN 050231
- San Antonio Regional HospitalUpland, CA · Acute Care Hospital · CCN 050099
Practice locations
Addresses where William Hsueh is enrolled with Medicare (CMS data updated 2026-10-02).
- 250 W Bonita Ave, Suite 250Pomona, CA 91767 (909) 655‑0300
- 9481 Pittsburgh Ave, Suite 200Rancho Cucamonga, CA 91730 (909) 655‑0300
Group practices
Medicare enrollment lists William Hsueh as a member of this group (CMS data updated 2026-10-02).
- Platinum Digestive Health10 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Pomona
Clinicians with the same Medicare primary specialty in Pomona, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972948164 |
| 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