Michael Greenspan, MD
Gastroenterology Physician · Elmhurst, IL
Michael Greenspan, MD is a gastroenterology physician with a practice address in Elmhurst, Illinois, and NPI 1942520127, issued on Jun 10, 2010. Check the license (Illinois 036131144, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Michael Greenspan
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 036131144 IL
Self-reported in NPPES; status is on the state search - Practice location
- 133 E Brush Hill RD Ste 310, Elmhurst, IL 60126
- Phone
- (331) 221-9003
- Enumerated
- Jun 10, 2010
- Record last updated
- May 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (331) 221-2743
- Medicare enrollment
- Enrolled (PECOS I20160721000341); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 133 E Brush Hill RD Ste 310
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Greenspan 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 036131144Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average gastroenterology physician in 2024
483 Medicare Part D claims for 286 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf89 claims
- Pantoprazole Sodium68 claims
- Omeprazole49 claims
- Gavilyte-G45 claims
- Peg-3350 And Electrolytes29 claims
- Dicyclomine Hcl25 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).
Bills Medicare through one group practice
- Endeavor Health Medical GroupElmhurst, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Greenspan among 887 gastroenterology physician records in Illinois
Michael Greenspan, MD is one of 887 gastroenterology physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2010 · median 2003 among the 643 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
All 887 in Illinois → Every provider in Elmhurst → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ashish Arora, MDElmhurst, IL 601261336157171
- Elizabeth Barczynski, MDElmhurst, IL 601261942250071
- Christopher Boutin, MDElmhurst, IL 601261760440259
- Adelina Hung, MDElmhurst, IL 601261326300120
- Jason Kramer, M.D.Elmhurst, IL 601261366891491
- Shakthi Kumar, MDElmhurst, IL 601261881853596
- Atena Lodhi, MDElmhurst, IL 601261629367966
- Patrick Lynch, MDElmhurst, IL 601261356392419
Common questions
What is Michael Greenspan, MD's NPI number?
Michael Greenspan, MD's National Provider Identifier (NPI) is 1942520127, issued on Jun 10, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Michael Greenspan, MD located?
The NPPES record lists a practice address at 133 E Brush Hill RD Ste 310, Elmhurst, IL, 60126. Phone: (331) 221-9003. Providers update this record themselves, so call before visiting.
How can I verify Michael Greenspan, MD's license?
NPPES lists Illinois license number 036131144, 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 Greenspan, MD prescribe under Medicare Part D?
In 2024, Michael Greenspan, MD had 483 Medicare Part D claims for 286 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Michael Greenspan, 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.