Ronald F. Cheff, MD
Internal Medicine Physician · Elmhurst, IL
Ronald F. Cheff, MD is an internal medicine physician with a practice address in Elmhurst, Illinois, and NPI 1326144643, issued on Sep 15, 2006. Check the license (Illinois 036045737, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ronald F. Cheff
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036045737 IL
36-045737 IL
Self-reported in NPPES; status is on the state search - Practice location
- 172 E Schiller St, Elmhurst, IL 60126
- Phone
- (331) 221-0000
- Enumerated
- Sep 15, 2006
- Record last updated
- Mar 6, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (331) 221-2312
- Medicaid ID
- 36-045737 IL
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 172 E Schiller St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ronald F. Cheff 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 036045737Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average internal medicine physician in 2024
5,048 Medicare Part D claims for 382 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 176 claims were for opioids.
Most prescribed
- Atorvastatin Calcium307 claims
- Metoprolol Succinate226 claims
- Amlodipine Besylate206 claims
- Levothyroxine Sodium179 claims
- Alprazolam156 claims
- Potassium Chloride156 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 MIPS final score for 2023 (Medicare payment program): 91.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Ronald F. Cheff among 7,238 internal medicine physician records in Illinois
Ronald F. Cheff, MD 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2019 · 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 Ronald F. Cheff, MD's NPI number?
Ronald F. Cheff, MD's National Provider Identifier (NPI) is 1326144643, issued on Sep 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald F. Cheff, MD located?
The NPPES record lists a practice address at 172 E Schiller St, Elmhurst, IL, 60126. Phone: (331) 221-0000. Providers update this record themselves, so call before visiting.
How can I verify Ronald F. Cheff, MD's license?
NPPES lists Illinois license number 036045737, 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 Ronald F. Cheff, MD prescribe under Medicare Part D?
In 2024, Ronald F. Cheff, MD had 5,048 Medicare Part D claims for 382 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Ronald F. Cheff, MD's MIPS final score?
The 2023 MIPS final score is 91.4 of 100. 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.