Gregory I. Halperin, M.D.
Specialist · Bloomington, IL
Gregory I. Halperin, M.D. is a specialist with a practice address in Bloomington, Illinois, and NPI 1760423206, issued on Jun 8, 2006. Check the license (Illinois 036-101762, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory I. Halperin
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- 036-101762 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1008 N Main St, Bloomington, IL 61701
- Phone
- (309) 829-5311
- Enumerated
- Jun 8, 2006
- Record last updated
- Jun 30, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (309) 827-8027
- Medicare enrollment
- Enrolled (PECOS I20101230001039); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 1997
- Entity
- Type 1 · individual
8 nearest specialist records → All 1,154 in Illinois → Look up another NPI →
Also registered at 1008 N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ara Aprahamian, M.D.Specialist1528015013
- Kenneth Barba, M.D.Specialist1265473706
- Hannah Garrigan, MD, MPHOphthalmology Physician1346829363
- Bradley Grant, O.D.Optometrist1386836518
- Joseph Harman, M.D.Specialist1942241484
- Shawn Koehler, O.D.Optometrist1336180876
Verify Gregory I. Halperin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 036-101762Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% more Medicare Part D claims than the average specialist in 2024
2,630 Medicare Part D claims for 657 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Latanoprost804 claims
- Prednisolone Acetate284 claims
- Timolol Maleate224 claims
- Ofloxacin218 claims
- Ketorolac Tromethamine197 claims
- Brimonidine Tartrate120 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 practice group's MIPS final score for 2023 (Medicare payment program): 71.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Gailey Eye Clinic, LtdBloomington, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory I. Halperin among 1,154 specialist records in Illinois
Gregory I. Halperin, M.D. is one of 1,154 specialist records with a practice address in Illinois. 19% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 19% of these records are
- In the CMS Doctors and Clinicians fileYes · 11% of these records are
- Graduated1997 · median 1988 among the 127 with a school on file
- Record last updated2016 · 84% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 specialist records list a practice address in Bloomington
They are 17 of the 1,903 NPPES records with a practice address in Bloomington, and 1,154 specialist records in Illinois.
All 1,154 in Illinois → Every provider in Bloomington → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Ara Aprahamian, M.D.Bloomington, IL 617011528015013
- Kenneth Barba, M.D.Bloomington, IL 617011265473706
- Erik Boe, M.D.Bloomington, IL 617011942268271
- Brian Emm, M.D.Bloomington, IL 617011043315021
- Joseph Harman, M.D.Bloomington, IL 617011942241484
- Christopher Hoy, P.T.Bloomington, IL 617011215281316
- Dennis Lockhart, M.D.Bloomington, IL 617011033144308
- Andrew Lyons, M.D.Bloomington, IL 617011912384322
Common questions
What is Gregory I. Halperin, M.D.'s NPI number?
Gregory I. Halperin, M.D.'s National Provider Identifier (NPI) is 1760423206, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory I. Halperin, M.D. located?
The NPPES record lists a practice address at 1008 N Main St, Bloomington, IL, 61701. Phone: (309) 829-5311. Providers update this record themselves, so call before visiting.
How can I verify Gregory I. Halperin, M.D.'s license?
NPPES lists Illinois license number 036-101762, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory I. Halperin, M.D. prescribe under Medicare Part D?
In 2024, Gregory I. Halperin, M.D. had 2,630 Medicare Part D claims for 657 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Gregory I. Halperin, M.D.'s MIPS final score?
The 2023 MIPS final score is 71.4 of 100, reported for the practice group. 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.