William Hsu
NPI 1750777371 · Student in an Organized Health Care Education/Training Program · Santa Ana, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Hsu is a Student in an Organized Health Care Education/Training Program provider in Santa Ana, CA (NPI 1750777371).
Provider details
- NPI number
- 1750777371
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
83% 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 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 226 | 113 |
| Losartan Potassium | 144 | 65 |
| Rosuvastatin Calcium | 137 | 68 |
| Amlodipine Besylate | 125 | 65 |
| Lisinopril | 107 | 61 |
| Simvastatin | 80 | 33 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-09
- Last updated
- 2021-12-15
Frequently asked questions
- What is William Hsu's NPI number?
- William Hsu's National Provider Identifier (NPI) is 1750777371, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hsu's specialty?
- William Hsu is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is William Hsu located?
- William Hsu's practice location on file with NPPES is 1900 E 4th St, Santa Ana, CA 92705-3910.
- What is William Hsu's phone number?
- The practice phone number listed in the NPPES registry for William Hsu is (714) 967-4766.
- Does William Hsu accept Medicare?
- William Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Hsu's NPI active?
- Yes — William Hsu's NPI (1750777371) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.