Gregory J. Kruper, M.D.
Otolaryngology Physician · Gurnee, IL
Gregory J. Kruper, M.D. is an otolaryngology physician with a practice address in Gurnee, Illinois, and NPI 1225263866, issued on May 27, 2009. Check the license (Illinois 036-134245, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Gregory J. Kruper
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 036-134245 IL
Self-reported in NPPES; status is on the state search - Practice location
- 222 S Greenleaf St Ste 102, Gurnee, IL 60031
- Phone
- (847) 662-4442
- Enumerated
- May 27, 2009
- Record last updated
- Mar 5, 2025
- Medicare enrollment
- Enrolled (PECOS I20140730001750); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 482 in Illinois → Look up another NPI →
Also registered at 222 S Greenleaf St Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Narendra Desai, MDOtolaryngology Physician1669449336
- Geoffrey Schwartz, M.D.Otolaryngology Physician1023272515
Verify Gregory J. Kruper 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 036-134245Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average otolaryngology physician in 2024
704 Medicare Part D claims for 308 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 23 claims were for opioids.
Most prescribed
- Fluticasone Propionate90 claims
- Prednisone85 claims
- Azelastine Hcl62 claims
- Pantoprazole Sodium58 claims
- Ipratropium Bromide43 claims
- Amoxicillin-Clavulanate Potass31 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): 0 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).
Bills Medicare through one group practice
- Lake County Head And Neck Specialists S.C.Gurnee, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory J. Kruper among 482 otolaryngology physician records in Illinois
Gregory J. Kruper, M.D. is one of 482 otolaryngology physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 39% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2009 · median 2005 among the 290 with a school on file
- Record last updated2025 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Illinois
There are 482 otolaryngology physician records in Illinois.
All 482 in Illinois → Every provider in Gurnee → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Narendra Desai, MDGurnee, IL 600311669449336
- Benjamin Johnson, MDGurnee, IL 600311619193109
- Erik Nelson, MDGurnee, IL 600311881706588
- Geoffrey Schwartz, M.D.Gurnee, IL 600311023272515
- Vibhakar Shah, M.D.Gurnee, IL 600311649268780
- Neil Aaronson, M.D.Highland Park, IL 600351841278298
- Elliot Lieberman, M.D.Highland Park, IL 600351245472455
- Joseph Mishell, M.D.Highland Park, IL 600351477531820
Common questions
What is Gregory J. Kruper, M.D.'s NPI number?
Gregory J. Kruper, M.D.'s National Provider Identifier (NPI) is 1225263866, issued on May 27, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Gregory J. Kruper, M.D. located?
The NPPES record lists a practice address at 222 S Greenleaf St Ste 102, Gurnee, IL, 60031. Phone: (847) 662-4442. Providers update this record themselves, so call before visiting.
How can I verify Gregory J. Kruper, M.D.'s license?
NPPES lists Illinois license number 036-134245, 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 Gregory J. Kruper, M.D. prescribe under Medicare Part D?
In 2024, Gregory J. Kruper, M.D. had 704 Medicare Part D claims for 308 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Gregory J. Kruper, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 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.