Patricia Hsia, MD
NPI 1174694087 · Gastroenterology Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patricia Hsia, MD is a Gastroenterology Physician provider in Fontana, CA (NPI 1174694087).
Provider details
- NPI number
- 1174694087
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G67035 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 141 | 133 |
| Omeprazole | 116 | 51 |
| Pantoprazole Sodium | 65 | 26 |
| Mesalamine | 54 | 21 |
| Budesonidebrand: Budesonide Dr | 22 | — |
| Sucralfate | 19 | — |
| Spironolactone | 16 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-13
- Last updated
- 2021-11-29
Frequently asked questions
- What is Patricia Hsia's NPI number?
- Patricia Hsia's National Provider Identifier (NPI) is 1174694087, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patricia Hsia's specialty?
- Patricia Hsia is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Patricia Hsia located?
- Patricia Hsia's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Patricia Hsia's phone number?
- The practice phone number listed in the NPPES registry for Patricia Hsia is (909) 427-3910.
- Does Patricia Hsia accept Medicare?
- Patricia Hsia is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patricia Hsia's NPI active?
- Yes — Patricia Hsia's NPI (1174694087) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.