Andrea Chen
NPI 1578274650 · Physician Assistant · Oakland, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrea Chen is a Physician Assistant provider in Oakland, CA (NPI 1578274650).
Provider details
- NPI number
- 1578274650
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
83% 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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 58 | 58 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 26 | 16 |
| Dabigatran Etexilate Mesylatebrand: Pradaxa | 17 | — |
| Pantoprazole Sodium | 16 | — |
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
Registry dates
- Enumerated
- 2022-12-08
- Last updated
- 2022-12-08
- Certified
- 2022-12-08
Frequently asked questions
- What is Andrea Chen's NPI number?
- Andrea Chen's National Provider Identifier (NPI) is 1578274650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrea Chen's specialty?
- Andrea Chen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Andrea Chen located?
- Andrea Chen's practice location on file with NPPES is 3100 Telegraph Ave, Oakland, CA 94609-3239.
- What is Andrea Chen's phone number?
- The practice phone number listed in the NPPES registry for Andrea Chen is (800) 607-6377.
- Does Andrea Chen accept Medicare?
- Andrea Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrea Chen's NPI active?
- Yes — Andrea Chen's NPI (1578274650) is active in the NPPES registry as of the last update on 2022-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.