Amy C. Chang, MD
Rheumatology Physician · Riverside, CA
Amy C. Chang, MD is a rheumatology physician with a practice address in Riverside, California, and NPI 1255490827, issued on Dec 8, 2006. Check the license (California A69032, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Amy C. Chang
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A69032 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Magnolia Ave, Riverside, CA 92505
- Phone
- (909) 353-2000
- Enumerated
- Dec 8, 2006
- Record last updated
- Dec 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081222000608); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 10800 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Hussein Abdulrassoul, MDOrthopaedic Surgery Physician1972123891
- Kimberly Adams, PA-CMedical Physician Assistant1053522870
- Alfredo Aguiar, PAPhysician Assistant1043368970
- Michael Aguinaldo, M.D.Pediatrics Physician1851531487
- Maria Aguirre, MDPediatrics Physician1295806255
Verify Amy C. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A69032Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
About as many Medicare Part D claims as the average rheumatology physician in 2024
1,973 Medicare Part D claims for 367 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Methotrexate333 claims
- Prednisone208 claims
- Hydroxychloroquine Sulfate197 claims
- Amjevita(Cf) Autoinjector129 claims
- Leflunomide98 claims
- Allopurinol76 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.
Industry payments in 2024: $124.99
1 payment: food and beverage; the largest payer was Aurinia Pharma U.S., Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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
- Southern California Permanente Medical GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amy C. Chang among 926 rheumatology physician records in California
Amy C. Chang, MD is one of 926 rheumatology physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1997 · median 2003 among the 641 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Riverside → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Al Franco, M.D.Riverside, CA 925051528128535
- David Lee, MDRiverside, CA 925051477602886
- Andrew Nguyen, MDRiverside, CA 925051366590291
- Andre Babajanians, MDRiverside, CA 925061255311676
- Asbat Hasan, MDRiverside, CA 925061215499256
- Nayef Kazzaz, M.DRiverside, CA 925061316234693
- Linda Lazar, DORiverside, CA 925061184999559
- Bradley Andersen, M.D.Riverside, CA 925071528018470
Common questions
What is Amy C. Chang, MD's NPI number?
Amy C. Chang, MD's National Provider Identifier (NPI) is 1255490827, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Amy C. Chang, MD located?
The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (909) 353-2000. Providers update this record themselves, so call before visiting.
How can I verify Amy C. Chang, MD's license?
NPPES lists California license number A69032, 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 Amy C. Chang, MD prescribe under Medicare Part D?
In 2024, Amy C. Chang, MD had 1,973 Medicare Part D claims for 367 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.