William Woo, M.D.
NPI 1356647739 · Family Medicine Physician · Anaheim, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Woo, M.D. is a Family Medicine Physician provider in Anaheim, CA (NPI 1356647739).
Provider details
- NPI number
- 1356647739
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A115071 (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
15 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 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 268 | 91 |
| Amlodipine Besylate | 119 | 44 |
| Losartan Potassium | 102 | 32 |
| Metformin Hclbrand: Metformin Hcl Er | 100 | 32 |
| Levothyroxine Sodium | 86 | 26 |
| Simvastatin | 83 | 29 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-02-02
- Last updated
- 2021-12-03
Frequently asked questions
- What is William Woo's NPI number?
- William Woo's National Provider Identifier (NPI) is 1356647739, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Woo's specialty?
- William Woo is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Woo located?
- William Woo's practice location on file with NPPES is 1188 N Euclid St, Anaheim, CA 92801-1900.
- What is William Woo's phone number?
- The practice phone number listed in the NPPES registry for William Woo is (888) 988-2800.
- Does William Woo accept Medicare?
- William Woo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Woo's NPI active?
- Yes — William Woo's NPI (1356647739) is active in the NPPES registry as of the last update on 2021-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.