Chang Yang, M.D.
Internal Medicine Physician · Elmhurst, IL
Chang Yang, M.D. is an internal medicine physician with a practice address in Elmhurst, Illinois, and NPI 1902219611, issued on Jun 10, 2014. Check the license (Illinois 036.143268, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Chang Yang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036.143268 IL
2489-320 WI
01086875A IN
2017021754 MO
35.152109 OH
Self-reported in NPPES; status is on the state search - Practice location
- 155 E Brush Hill RD, Elmhurst, IL 60126
- Phone
- (331) 221-8952
- Enumerated
- Jun 10, 2014
- Record last updated
- Jun 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20180622002498); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 155 E Brush Hill RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Syed Ahmed, DOHospitalist Physician1689311037
- Shah Alam, MDHospitalist Physician1164450672
- Muhammad Umer Altaf, MDHospitalist Physician1427542414
- Dominic Antonacci, MDDiagnostic Radiology Physician1487148870
Verify Chang Yang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.143268Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
387 Medicare Part D claims for 158 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Diltiazem 24hr Er (Xr)24 claims
- Metoprolol Succinate23 claims
- Pantoprazole Sodium21 claims
- Atorvastatin Calcium18 claims
- Carvedilol16 claims
- Lisinopril15 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 3 group practices
- Endeavor Health Medical GroupElmhurst, IL
- Rural Physicians Group-Pannu PLLCBrookfield, MO
- University OF ChicagoChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chang Yang among 7,238 internal medicine physician records in Illinois
Chang Yang, M.D. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 59% of them.
- NPI issued2014 · 59% of these records are older, 39% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2005 · median 2003 among the 3,580 with a school on file
- Record last updated2025 · 47% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
50 internal medicine physician records list a practice address in Elmhurst
They are 50 of the 1,540 NPPES records with a practice address in Elmhurst, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Elmhurst → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Maggie Chacko, MDElmhurst, IL 601261417993734
- Yolanda Co, M.D.Elmhurst, IL 601261811985054
- John Damergis, MDElmhurst, IL 601261750332896
- Richard Finegold, MD.Elmhurst, IL 601261770564122
- Michael Hugar, MDElmhurst, IL 601261558343913
- Joseph Kaliski, MDElmhurst, IL 601261235180381
- Michael Nosek, MDElmhurst, IL 601261598716656
- Patrick O'Meara, M.D.Elmhurst, IL 601261437127891
Common questions
What is Chang Yang, M.D.'s NPI number?
Chang Yang, M.D.'s National Provider Identifier (NPI) is 1902219611, issued on Jun 10, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Chang Yang, M.D. located?
The NPPES record lists a practice address at 155 E Brush Hill RD, Elmhurst, IL, 60126. Phone: (331) 221-8952. Providers update this record themselves, so call before visiting.
How can I verify Chang Yang, M.D.'s license?
NPPES lists Illinois license number 036.143268, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Chang Yang, M.D. prescribe under Medicare Part D?
In 2024, Chang Yang, M.D. had 387 Medicare Part D claims for 158 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.