Mark Weng, D.O.
NPI 1477578425 · Family Medicine Physician · West Covina, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Weng, D.O. is a Family Medicine Physician provider in West Covina, CA (NPI 1477578425).
Provider details
- NPI number
- 1477578425
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A8940 (CA)
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
19 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 · 88 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 656 | 254 |
| Amlodipine Besylate | 400 | 162 |
| Lisinopril | 372 | 133 |
| Losartan Potassium | 274 | 100 |
| Rosuvastatin Calcium | 198 | 77 |
| Metformin Hclbrand: Metformin Hcl Er | 192 | 71 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2021-12-03
Frequently asked questions
- What is Mark Weng's NPI number?
- Mark Weng's National Provider Identifier (NPI) is 1477578425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Weng's specialty?
- Mark Weng is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Weng located?
- Mark Weng's practice location on file with NPPES is 1249 S Sunset Ave, West Covina, CA 91790-3960.
- What is Mark Weng's phone number?
- The practice phone number listed in the NPPES registry for Mark Weng is (626) 813-2282.
- Does Mark Weng accept Medicare?
- Mark Weng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Weng's NPI active?
- Yes — Mark Weng's NPI (1477578425) 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.