Michael J. Unger, MD
Internal Medicine Physician · Buffalo Grove, IL
Michael J. Unger, MD is an internal medicine physician with a practice address in Buffalo Grove, Illinois, and NPI 1518945484, issued on Jan 2, 2006. Check the license (Illinois 036093043, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Michael J. Unger
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036093043 IL
Self-reported in NPPES; status is on the state search - Practice location
- 650 W Lake Cook RD, Buffalo Grove, IL 60089
- Phone
- (847) 459-1160
- Enumerated
- Jan 2, 2006
- Record last updated
- Apr 10, 2024
- Fax
- (847) 459-8692
- Medicare enrollment
- Enrolled (PECOS I20050711000421); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 650 W Lake Cook RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael J. Unger 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 036093043Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,078 Medicare Part D claims for 231 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium198 claims
- Rosuvastatin Calcium163 claims
- Ezetimibe88 claims
- Amlodipine Besylate71 claims
- Losartan Potassium71 claims
- Metoprolol Succinate68 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
- Advocate Health And Hospitals CorporationBuffalo Grove, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael J. Unger among 7,238 internal medicine physician records in Illinois
Michael J. Unger, 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 fileYes · 50% of these records are
- Graduated1992 · median 2003 among the 3,580 with a school on file
- Record last updated2024 · 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).
24 internal medicine physician records list a practice address in Buffalo Grove
They are 24 of the 868 NPPES records with a practice address in Buffalo Grove, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Buffalo Grove → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Charman, M.D.Buffalo Grove, IL 600891346228954
- Mark Charman, M.D.Buffalo Grove, IL 600891033197637
- Stuart Ferber, M.D.Buffalo Grove, IL 600891952389413
- Irina Goldvekht, D.O.Buffalo Grove, IL 600891154309755
- Thomas Heggen, MDBuffalo Grove, IL 600891710974860
- Gabriel Kibrit, MDBuffalo Grove, IL 600891477531937
- Carl Lang, M.D.Buffalo Grove, IL 600891730167339
- Wendi Marcus, M.D.Buffalo Grove, IL 600891548249113
Common questions
What is Michael J. Unger, MD's NPI number?
Michael J. Unger, MD's National Provider Identifier (NPI) is 1518945484, issued on Jan 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Unger, MD located?
The NPPES record lists a practice address at 650 W Lake Cook RD, Buffalo Grove, IL, 60089. Phone: (847) 459-1160. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Unger, MD's license?
NPPES lists Illinois license number 036093043, 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 Michael J. Unger, MD prescribe under Medicare Part D?
In 2024, Michael J. Unger, MD had 2,078 Medicare Part D claims for 231 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.