Joann Chan, PA
NPI 1912298217 · Physician Assistant · Los Angeles, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joann Chan, PA is a Physician Assistant provider in Los Angeles, CA (NPI 1912298217).
Provider details
- NPI number
- 1912298217
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- 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
15 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 24 |
| Losartan Potassium | 23 |
| Metformin Hcl | 19 |
| Amlodipine Besylate | 15 |
| Famotidine | 14 |
| Montelukast Sodium | 13 |
| Semaglutidebrand: Ozempic | 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 , 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
- 2011-04-21
- Last updated
- 2021-12-13
- Certified
- 2021-12-13
Frequently asked questions
- What is Joann Chan's NPI number?
- Joann Chan's National Provider Identifier (NPI) is 1912298217, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joann Chan's specialty?
- Joann Chan is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joann Chan located?
- Joann Chan's practice location on file with NPPES is 4070 E Olympic Blvd, Los Angeles, CA 90023-3332.
- What is Joann Chan's phone number?
- The practice phone number listed in the NPPES registry for Joann Chan is (323) 685-2070.
- Does Joann Chan accept Medicare?
- Joann Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joann Chan's NPI active?
- Yes — Joann Chan's NPI (1912298217) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.