William Yuen, MD
NPI 1871113662 · Family Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Yuen, MD is a Family Medicine Physician provider in San Jose, CA (NPI 1871113662).
Provider details
- NPI number
- 1871113662
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301507871 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 81 | 44 |
| Amlodipine Besylate | 62 | 34 |
| Lisinopril | 59 | 30 |
| Losartan Potassium | 58 | 30 |
| Fluticasone Propionate | 54 | 28 |
| Rosuvastatin Calcium | 49 | 22 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-21
- Last updated
- 2023-09-14
- Certified
- 2023-09-14
Frequently asked questions
- What is William Yuen's NPI number?
- William Yuen's National Provider Identifier (NPI) is 1871113662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Yuen's specialty?
- William Yuen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Yuen located?
- William Yuen's practice location on file with NPPES is 1721 Technology Dr, San Jose, CA 95110-1305.
- What is William Yuen's phone number?
- The practice phone number listed in the NPPES registry for William Yuen is (408) 436-3300.
- Does William Yuen accept Medicare?
- William Yuen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Yuen's NPI active?
- Yes — William Yuen's NPI (1871113662) is active in the NPPES registry as of the last update on 2023-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.