Olufemi Kassim, M.D.
NPI 1174961999 · Gastroenterology Physician · Maywood, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Olufemi Kassim, M.D. is a Gastroenterology Physician provider in Maywood, IL (NPI 1174961999).
Provider details
- NPI number
- 1174961999
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125063118 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
298 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 70 | $263 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 51 | $7 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 31 | $78 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 29 | $76 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 28 | $110 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 87 | 86 |
| Omeprazole | 43 | 21 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 39 | 37 |
| Linaclotidebrand: Linzess | 28 | — |
| Famotidine | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (4)
- 5841 S Maryland AveMc 7082Chicago, IL 60637-1447Phone: (773) 702-6840
- 4445 W Irving Park Rd Ste 200Chicago, IL 60641-2808Phone: (312) 695-5620Fax: (312) 921-0403
- 5841 S Maryland AveMc 7082Chicago, IL 60637-1447Phone: (773) 702-6840
- 830 Harrison AveBoston, MA 02118Phone: (617) 638-6525
Registry dates
- Enumerated
- 2013-06-14
- Last updated
- 2024-02-01
- Certified
- 2024-02-01
Frequently asked questions
- What is Olufemi Kassim's NPI number?
- Olufemi Kassim's National Provider Identifier (NPI) is 1174961999, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Olufemi Kassim's specialty?
- Olufemi Kassim is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Olufemi Kassim located?
- Olufemi Kassim's practice location on file with NPPES is 2160 S 1st Ave, Maywood, IL 60153-3328.
- What is Olufemi Kassim's phone number?
- The practice phone number listed in the NPPES registry for Olufemi Kassim is (708) 216-9000.
- Does Olufemi Kassim accept Medicare?
- Olufemi Kassim is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Olufemi Kassim's NPI active?
- Yes — Olufemi Kassim's NPI (1174961999) is active in the NPPES registry as of the last update on 2024-02-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.