Olufemi Kassim, M.D.
Gastroenterology Physician · Maywood, IL
Olufemi Kassim, M.D. is a gastroenterology physician with a practice address in Maywood, Illinois, and NPI 1174961999, issued on Jun 14, 2013. Check the license (Illinois 036140239, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Olufemi Kassim
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 036140239 IL
125063118 IL
280737 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2160 S 1St Ave, Maywood, IL 60153
- Phone
- (708) 216-9000
- Enumerated
- Jun 14, 2013
- Record last updated
- Feb 1, 2024
- Medicare enrollment
- Enrolled (PECOS I20210428002904); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 2160 S 1St Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stefanie AbbottFamily Medicine Physician1861137457
- Osamah Abdallah, M.D.Internal Medicine Physician1275976144
- Abdelhai Abdelqader, MDGastroenterology Physician1073931127
- Samer Abdelsamie, D.M.DOral and Maxillofacial Surgery (Dentist)1366732257
- Zaid Abdelsattar, MD, MSCThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1760793293
- Gerges Abdelsayed, MBBCH BAODiagnostic Radiology Physician1942902606
Verify Olufemi Kassim 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 036140239Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average gastroenterology physician in 2024
271 Medicare Part D claims for 167 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Peg 3350-Electrolyte87 claims
- Omeprazole43 claims
- Sod Sulf-Potass Sulf-Mag Sulf39 claims
- Linzess28 claims
- Famotidine11 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
- Northwestern Medical Faculty FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Olufemi Kassim among 887 gastroenterology physician records in Illinois
Olufemi Kassim, 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 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2013 · median 2003 among the 643 with a school on file
- Record last updated2024 · 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).
41 gastroenterology physician records list a practice address in Maywood
They are 41 of the 2,572 NPPES records with a practice address in Maywood, and 887 gastroenterology physician records in Illinois.
All 887 in Illinois → Every provider in Maywood → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Elora Arya, M.D.Maywood, IL 601531881894475
- Agata Bednarz, M.D.Maywood, IL 601531477671527
- Charles Broy, M.D.Maywood, IL 601531952449340
- Suzanne Daly, M.D.Maywood, IL 601531780770446
- Lesley Dawravoo, M.D.Maywood, IL 601531588820781
- Michael Klamut, MDMaywood, IL 601531700865086
- Samuel Leon, MDMaywood, IL 601531326010067
- Jack Leya, MDMaywood, IL 601531336128602
Common questions
What is Olufemi Kassim, M.D.'s NPI number?
Olufemi Kassim, M.D.'s National Provider Identifier (NPI) is 1174961999, issued on Jun 14, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Olufemi Kassim, M.D. located?
The NPPES record lists a practice address at 2160 S 1St Ave, Maywood, IL, 60153. Phone: (708) 216-9000. Providers update this record themselves, so call before visiting.
How can I verify Olufemi Kassim, M.D.'s license?
NPPES lists Illinois license number 036140239, 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 Olufemi Kassim, M.D. prescribe under Medicare Part D?
In 2024, Olufemi Kassim, M.D. had 271 Medicare Part D claims for 167 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.