Robert Hsu, MPAS, PA-C
NPI 1821168832 · Physician Assistant · San Jose, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Hsu, MPAS, PA-C is a Physician Assistant provider in San Jose, CA (NPI 1821168832).
Provider details
- NPI number
- 1821168832
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MPAS, PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA 18635 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 49 | 29 |
| Metoprolol Tartrate | 32 | 19 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 31 | 29 |
| Atorvastatin Calcium | 26 | 15 |
| Furosemide | 26 | 23 |
| Potassium Chloride | 22 | 19 |
| Famotidine |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-08
- Last updated
- 2016-07-15
Frequently asked questions
- What is Robert Hsu's NPI number?
- Robert Hsu's National Provider Identifier (NPI) is 1821168832, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Hsu's specialty?
- Robert Hsu is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Robert Hsu located?
- Robert Hsu's practice location on file with NPPES is 455 Oconnor Dr, San Jose, CA 95128-1633.
- What is Robert Hsu's phone number?
- The practice phone number listed in the NPPES registry for Robert Hsu is (408) 920-0177.
- Does Robert Hsu accept Medicare?
- Robert Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Hsu's NPI active?
- Yes — Robert Hsu's NPI (1821168832) is active in the NPPES registry as of the last update on 2016-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.