Anthony Chan, DO
NPI 1831849405 · Family Medicine Physician · Downey, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anthony Chan, DO is a Family Medicine Physician provider in Downey, CA (NPI 1831849405).
Provider details
- NPI number
- 1831849405
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A21812 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
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 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 75 | 44 |
| Lisinopril | 64 | 33 |
| Amlodipine Besylate | 53 | 27 |
| Levothyroxine Sodium | 39 | 19 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 32 | 15 |
| Gabapentin | 31 | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-03-26
- Last updated
- 2025-09-08
- Certified
- 2025-09-08
Frequently asked questions
- What is Anthony Chan's NPI number?
- Anthony Chan's National Provider Identifier (NPI) is 1831849405, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anthony Chan's specialty?
- Anthony Chan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Anthony Chan located?
- Anthony Chan's practice location on file with NPPES is 11500 Brookshire Ave Ofc Downey, Downey, CA 90241-4917.
- What is Anthony Chan's phone number?
- The practice phone number listed in the NPPES registry for Anthony Chan is (562) 904-5000.
- Does Anthony Chan accept Medicare?
- Anthony Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anthony Chan's NPI active?
- Yes — Anthony Chan's NPI (1831849405) is active in the NPPES registry as of the last update on 2025-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.