Michelle Chan, M.D.
NPI 1043326283 · Internal Medicine Physician · San Gabriel, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michelle Chan, M.D. is a Internal Medicine Physician provider in San Gabriel, CA (NPI 1043326283).
Provider details
- NPI number
- 1043326283
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 177343 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,878 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 570 | $71 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 564 | $84 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 386 | $68 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 56 | $190 |
| Advance Care Planning, First 30 Minutes99497 | 55 | $93 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 368 | 93 |
| Amlodipine Besylate | 285 | 66 |
| Losartan Potassium | 202 | 48 |
| Alendronate Sodium | 142 | 37 |
| Simvastatin | 100 | 22 |
| Metformin Hcl | 75 | 16 |
| Lisinopril | 72 | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-21
- Last updated
- 2010-04-27
Frequently asked questions
- What is Michelle Chan's NPI number?
- Michelle Chan's National Provider Identifier (NPI) is 1043326283, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michelle Chan's specialty?
- Michelle Chan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michelle Chan located?
- Michelle Chan's practice location on file with NPPES is 1726 New Ave, San Gabriel, CA 91776-3734.
- What is Michelle Chan's phone number?
- The practice phone number listed in the NPPES registry for Michelle Chan is (626) 943-0780.
- Does Michelle Chan accept Medicare?
- Michelle Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michelle Chan's NPI active?
- Yes — Michelle Chan's NPI (1043326283) is active in the NPPES registry as of the last update on 2010-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.