Jennifer Chan, M.D.
NPI 1598912321 · Gastroenterology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jennifer Chan, M.D. is a Gastroenterology Physician provider in Los Angeles, CA (NPI 1598912321).
Provider details
- NPI number
- 1598912321
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A92109 (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
17 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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 235 | 228 |
| Ustekinumabbrand: Stelara | 28 | — |
| Pantoprazole Sodium | 24 | 15 |
| Omeprazole | 19 | 14 |
| Metronidazole | 12 | 11 |
| Hydrocortisone | 11 | — |
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
- 2008-08-22
- Last updated
- 2022-01-18
- Certified
- 2022-01-18
Frequently asked questions
- What is Jennifer Chan's NPI number?
- Jennifer Chan's National Provider Identifier (NPI) is 1598912321, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Chan's specialty?
- Jennifer Chan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Chan located?
- Jennifer Chan's practice location on file with NPPES is 6041 Cadillac Ave Ste 220, Los Angeles, CA 90034-1702.
- What is Jennifer Chan's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Chan is (310) 597-0640.
- Does Jennifer Chan accept Medicare?
- Jennifer Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jennifer Chan's NPI active?
- Yes — Jennifer Chan's NPI (1598912321) is active in the NPPES registry as of the last update on 2022-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.