Jennifer Y. Chen, MD
Gastroenterology Physician · San Francisco, CA
Jennifer Y. Chen, MD is a gastroenterology physician with a practice address in San Francisco, California, and NPI 1376771758, issued on Jun 24, 2009. Check the license (California A149830, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jennifer Y. Chen
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- A149830 CA
250627 MA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave FL 7, San Francisco, CA 94143
- Phone
- (415) 502-4444
- Enumerated
- Jun 24, 2009
- Record last updated
- Nov 29, 2024
- Fax
- (415) 502-2249
- Medicare enrollment
- Enrolled (PECOS I20170908003263); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 400 Parnassus Ave FL 7
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jesse Biebesheimer, M.D.Ophthalmology Physician1316163454
- Danielle Brandman, MD, MASTransplant Hepatology Physician1518164540
- Carol Dimeling, M.D.Otolaryngology Physician1528086360
- Magdelena Ford, NPNurse Practitioner1538721386
- Melissa Melaragni, AGPCNP-C, AGACNP-BCNurse Practitioner1235822990
- Gregory Merrill, LCSWClinical Social Worker1093598914
Verify Jennifer Y. Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A149830Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average gastroenterology physician in 2024
12 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Regents OF The University OF CaliforniaSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Y. Chen among 2,140 gastroenterology physician records in California
Jennifer Y. Chen, MD 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 2009, is newer than 69% of them.
- NPI issued2009 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2009 · median 2002 among the 1,538 with a school on file
- Record last updated2024 · 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 San Francisco → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Kendall BeckSan Francisco, CA 941431972892057
- John Cello, MDSan Francisco, CA 941431346205168
- Joseph Chen, M.D.San Francisco, CA 941431558500603
- Lukejohn Day, M.D.San Francisco, CA 941431669623773
- Jeanne-Marie GiardSan Francisco, CA 941431194134460
- Courtney Gonzales, M.D.San Francisco, CA 941431669708830
- Abdul Kouanda, MDSan Francisco, CA 941431144648833
- Timothy Lu, M.D., PH.D.San Francisco, CA 941431922258169
Common questions
What is Jennifer Y. Chen, MD's NPI number?
Jennifer Y. Chen, MD's National Provider Identifier (NPI) is 1376771758, issued on Jun 24, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Y. Chen, MD located?
The NPPES record lists a practice address at 400 Parnassus Ave FL 7, San Francisco, CA, 94143. Phone: (415) 502-4444. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Y. Chen, MD's license?
NPPES lists California license number A149830, 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 Y. Chen, MD prescribe under Medicare Part D?
In 2024, Jennifer Y. Chen, MD had 12 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Jennifer Y. Chen, MD's MIPS final score?
The 2023 MIPS final score is 91.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.