Aaron Harris Cohn, M.D.
Gastroenterology Physician · Grayslake, IL
Aaron Harris Cohn, M.D. is a gastroenterology physician with a practice address in Grayslake, Illinois, and NPI 1841586211, issued on Jun 23, 2011. Check the license (Illinois 036.146777, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Aaron Harris Cohn
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 036.146777 IL
125.059364 IL
DR.0058264 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1475 E Belvidere RD Ste 301, Grayslake, IL 60030
- Phone
- (847) 535-6083
- Enumerated
- Jun 23, 2011
- Record last updated
- Jul 21, 2022
- Fax
- (224) 271-4910
- Medicare enrollment
- Enrolled (PECOS I20181030000302); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 1475 E Belvidere RD Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frank Martini, MDGastroenterology Physician1588642136
Verify Aaron Harris Cohn 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 036.146777Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average gastroenterology physician in 2024
1,018 Medicare Part D claims for 421 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf208 claims
- Omeprazole190 claims
- Linzess61 claims
- Dicyclomine Hcl48 claims
- Pantoprazole Sodium43 claims
- Famotidine29 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): 94.1 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).
Industry payments in 2024: $536.55
15 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationGrays Lake, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron Harris Cohn among 887 gastroenterology physician records in Illinois
Aaron Harris Cohn, M.D. 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 2011, is newer than 66% of them.
- NPI issued2011 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2011 · median 2003 among the 643 with a school on file
- Record last updated2022 · 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 Grayslake → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- John Gaetano, M.D.Grayslake, IL 600301588977722
- James Gross, MDGrayslake, IL 600301497733851
- Frank Martini, MDGrayslake, IL 600301588642136
- Hosep Deyrmenjian, M.D.Gurnee, IL 600311710979729
- Walter Glaws, D OGurnee, IL 600311104828532
- Amit Kalra, M.D.Gurnee, IL 600311215120274
- Everett Kirch, MDGurnee, IL 600311225030687
- Kevin Liebovich, MDGurnee, IL 600311235131673
Common questions
What is Aaron Harris Cohn, M.D.'s NPI number?
Aaron Harris Cohn, M.D.'s National Provider Identifier (NPI) is 1841586211, issued on Jun 23, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Harris Cohn, M.D. located?
The NPPES record lists a practice address at 1475 E Belvidere RD Ste 301, Grayslake, IL, 60030. Phone: (847) 535-6083. Providers update this record themselves, so call before visiting.
How can I verify Aaron Harris Cohn, M.D.'s license?
NPPES lists Illinois license number 036.146777, 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 Aaron Harris Cohn, M.D. prescribe under Medicare Part D?
In 2024, Aaron Harris Cohn, M.D. had 1,018 Medicare Part D claims for 421 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Aaron Harris Cohn, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.1 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.