William Tu, MD
NPI 1346260502 · Internal Medicine Physician · Woodland Hills, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Tu, MD is a Internal Medicine Physician provider in Woodland Hills, CA (NPI 1346260502).
Provider details
- NPI number
- 1346260502
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A77859 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 88 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 418 | 160 |
| Amlodipine Besylate | 347 | 127 |
| Losartan Potassium | 295 | 111 |
| Rosuvastatin Calcium | 248 | 92 |
| Simvastatin | 198 | 72 |
| Lisinopril | 165 | 62 |
| Atenolol | 158 | 66 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$245 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-20
- Last updated
- 2021-12-21
- Certified
- 2021-12-21
Frequently asked questions
- What is William Tu's NPI number?
- William Tu's National Provider Identifier (NPI) is 1346260502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Tu's specialty?
- William Tu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Tu located?
- William Tu's practice location on file with NPPES is 5601 Desoto Avenue, Woodland Hills, CA 91367.
- What is William Tu's phone number?
- The practice phone number listed in the NPPES registry for William Tu is (888) 515-3500.
- Does William Tu accept Medicare?
- William Tu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Tu's NPI active?
- Yes — William Tu's NPI (1346260502) is active in the NPPES registry as of the last update on 2021-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.