Jennifer J. Chang, M.D.
Internal Medicine Physician · Riverside, CA
Jennifer J. Chang, M.D. is an internal medicine physician with a practice address in Riverside, California, and NPI 1831364991, issued on Apr 29, 2008. Check the license (California A106844, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jennifer J. Chang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A106844 CA
249583 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3865 Jackson St, Riverside, CA 92503
- Phone
- (714) 869-7760
- Enumerated
- Apr 29, 2008
- Record last updated
- May 12, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180306001127); 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 3865 Jackson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John AbedEmergency Medicine Physician1891724316
- Betsy Albrecht, R.N. CNOR RNFARegistered Nurse First Assistant1043643208
- Alyssa Armstrong, CNMAdvanced Practice Midwife1770359754
- Marium AwadPharmacist1215641709
- Christine Ayad, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1316458896
- Bassam BaderHospitalist Physician1487072559
Verify Jennifer J. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A106844Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
64 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Easy Comfort Pen Needles13 claims
- Humalog Kwikpen U-10013 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 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).
Industry payments in 2024: $188.65
2 payments; by number, the most common kind was food and beverage; the largest payer was Cook Medical LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Guam Memorial HospitalTamuning, GU
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer J. Chang among 17,696 internal medicine physician records in California
Jennifer J. Chang, 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 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2005 · 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).
187 internal medicine physician records list a practice address in Riverside
They are 187 of the 13,893 NPPES records with a practice address in Riverside, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Riverside → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Roger Cheng, M.D.Riverside, CA 925031265458301
- Willie Citrin, MDRiverside, CA 925031558321497
- Fady Fayad, M.D.Riverside, CA 925031205862612
- Bahaa Girgis, M.D.Riverside, CA 925031154519213
- Liwen Han, MDRiverside, CA 925031205030459
- Naila Khan, D.O.Riverside, CA 925031407303324
- Ahmed Kheiter, MDRiverside, CA 925031194896043
- Amy Lee, MD, FACE, FACGSRiverside, CA 925031639135098
Common questions
What is Jennifer J. Chang, M.D.'s NPI number?
Jennifer J. Chang, M.D.'s National Provider Identifier (NPI) is 1831364991, issued on Apr 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer J. Chang, M.D. located?
The NPPES record lists a practice address at 3865 Jackson St, Riverside, CA, 92503. Phone: (714) 869-7760. Providers update this record themselves, so call before visiting.
How can I verify Jennifer J. Chang, M.D.'s license?
NPPES lists California license number A106844, 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 J. Chang, M.D. prescribe under Medicare Part D?
In 2024, Jennifer J. Chang, M.D. had 64 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Jennifer J. Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.