David Chu, DO
NPI 1326779273 · Internal Medicine Physician · Van Nuys, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Chu, DO is a Internal Medicine Physician provider in Van Nuys, CA (NPI 1326779273).
Provider details
- NPI number
- 1326779273
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 16 | 11 |
| Amlodipine Besylate | 14 | — |
| Losartan Potassium | 14 | — |
| Levothyroxine Sodium | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 1720 E Cesar E Chavez AveLos Angeles, CA 90033-2414Phone: (323) 268-5000
Registry dates
- Enumerated
- 2022-06-21
- Last updated
- 2025-05-21
- Certified
- 2025-05-21
Frequently asked questions
- What is David Chu's NPI number?
- David Chu's National Provider Identifier (NPI) is 1326779273, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Chu's specialty?
- David Chu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Chu located?
- David Chu's practice location on file with NPPES is 15107 Vanowen St, Van Nuys, CA 91405-4542.
- What is David Chu's phone number?
- The practice phone number listed in the NPPES registry for David Chu is (818) 782-6000.
- Does David Chu accept Medicare?
- David Chu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Chu's NPI active?
- Yes — David Chu's NPI (1326779273) is active in the NPPES registry as of the last update on 2025-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.