Ji Jill Chen, M.D.
Internal Medicine Physician · Berkeley, CA
Ji Jill Chen, M.D. is an internal medicine physician with a practice address in Berkeley, California, and NPI 1386685444, issued on Jun 9, 2006. Check the license (California A80978, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ji Jill Chen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A80978 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3260 Sacramento St, Berkeley, CA 94702
- Phone
- (510) 601-6060
- Enumerated
- Jun 9, 2006
- Record last updated
- Feb 8, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050802000710); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 3260 Sacramento St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melissa Allen, NPAdult Health Nurse Practitioner1225009319
- Susan Battersby, RNRegistered Nurse1831643162
- Laura Carstensen, PH.D.Clinical Psychologist1841467214
- Diane Chowwoods, DPMPodiatrist1790726511
- Rachel Fogel, M.D.Internal Medicine Physician1205039013
- Jessica Furer, M.D.Internal Medicine Physician1366586406
Verify Ji Jill Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A80978Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average internal medicine physician in 2024
593 Medicare Part D claims for 73 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium98 claims
- Amlodipine Besylate68 claims
- Lisinopril34 claims
- Alendronate Sodium27 claims
- Metoprolol Succinate26 claims
- Gabapentin20 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
- Lifelong Medical CareBerkeley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ji Jill Chen among 17,696 internal medicine physician records in California
Ji Jill Chen, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1985 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
83 internal medicine physician records list a practice address in Berkeley
They are 83 of the 4,898 NPPES records with a practice address in Berkeley, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Berkeley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Alan Eshleman, MDBerkeley, CA 947021932247087
- Rachel Fogel, M.D.Berkeley, CA 947021205039013
- Jessica Furer, M.D.Berkeley, CA 947021366586406
- Talia Gracer, M.D.Berkeley, CA 947021659670024
- Bernard Herring, M.D.Berkeley, CA 947021962529917
- Floyd Huen, M.D.Berkeley, CA 947021528135217
- Jessica LiuBerkeley, CA 947021922442383
- Runa Basu, D.O.Berkeley, CA 947031245471689
Common questions
What is Ji Jill Chen, M.D.'s NPI number?
Ji Jill Chen, M.D.'s National Provider Identifier (NPI) is 1386685444, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ji Jill Chen, M.D. located?
The NPPES record lists a practice address at 3260 Sacramento St, Berkeley, CA, 94702. Phone: (510) 601-6060. Providers update this record themselves, so call before visiting.
How can I verify Ji Jill Chen, M.D.'s license?
NPPES lists California license number A80978, 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 Ji Jill Chen, M.D. prescribe under Medicare Part D?
In 2024, Ji Jill Chen, M.D. had 593 Medicare Part D claims for 73 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.