Jennifer Tan Chan, M.D.
Gastroenterology Physician · Los Angeles, CA
Jennifer Tan Chan, M.D. is a gastroenterology physician with a practice address in Los Angeles, California, and NPI 1598912321, issued on Aug 22, 2008. Check the license (California A92109, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jennifer Tan Chan
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A92109 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6041 Cadillac Ave Ste 220, Los Angeles, CA 90034
- Phone
- (310) 597-0640
- Enumerated
- Aug 22, 2008
- Record last updated
- Jan 18, 2022
- Medicare enrollment
- Enrolled (PECOS I20091015000086); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2003
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Verify Jennifer Tan Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A92109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average gastroenterology physician in 2024
445 Medicare Part D claims for 320 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Gavilyte-C235 claims
- Stelara28 claims
- Pantoprazole Sodium24 claims
- Omeprazole19 claims
- Metronidazole12 claims
- Hydrocortisone11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Tan Chan among 2,140 gastroenterology physician records in California
Jennifer Tan Chan, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 63% of them.
- NPI issued2008 · 63% of these records are older, 31% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2003 · median 2002 among the 1,538 with a school on file
- Record last updated2022 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Los Angeles → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Jaime Chen, MDLos Angeles, CA 900341619037892
- Amir Ekanej, MDLos Angeles, CA 900341639221096
- Howard Fullman, MDLos Angeles, CA 900341992872808
- Douglas Gardner, MDLos Angeles, CA 900341770650798
- Oliver Goldsmith, MDLos Angeles, CA 900341417005463
- David Kim, MDLos Angeles, CA 900341104966654
- Claire Li, MDLos Angeles, CA 900341659833499
- Neil Sevy, MDLos Angeles, CA 900341588716948
Common questions
What is Jennifer Tan Chan, M.D.'s NPI number?
Jennifer Tan Chan, M.D.'s National Provider Identifier (NPI) is 1598912321, issued on Aug 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Tan Chan, M.D. located?
The NPPES record lists a practice address at 6041 Cadillac Ave Ste 220, Los Angeles, CA, 90034. Phone: (310) 597-0640. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Tan Chan, M.D.'s license?
NPPES lists California license number A92109, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jennifer Tan Chan, M.D. prescribe under Medicare Part D?
In 2024, Jennifer Tan Chan, M.D. had 445 Medicare Part D claims for 320 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.