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Gastroenterology

Thamer Kassim, MD

Works at hospitals in Saint Joseph, MO · Maryville, MO · North Kansas City, MO … · Missouri, Kansas

Summary

Thamer Kassim, MD (Gastroenterology) is listed by Medicare at 5 hospitals in Saint Joseph, MO, Maryville, MO and North Kansas City, MO and other places. NPI 1518410091. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Thamer Kassim, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

GastroenterologyPrimary specialty
YesAccepts Medicare assignment
14Years since medical school (graduated 2012)
MaleGender (as listed)
Cotton-O'neil Clinic Revocable TrustGroup practice (+3 more)

Quick answers

Which hospitals does Thamer Kassim work at?
Medicare's official clinician data lists Thamer Kassim at 5 hospitals: Mosaic Life Care at St Joseph, Mosaic Medical Center - Maryville, NKC Health, Saint Francis Medical Center and Stormont Vail Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Thamer Kassim see patients?
Medicare's clinician data lists 10 practice locations, including Topeka, KS, Cape Girardeau, MO and North Kansas City, MO. Call before your visit to confirm the address.
What is Thamer Kassim's specialty?
Medicare lists Gastroenterology as the primary specialty.
Does Thamer Kassim accept Medicare assignment?
Yes. Medicare's clinician data says Thamer Kassim accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Thamer Kassim?
(785) 354-6000, as listed in official Medicare / NPI Registry data.
What is Thamer Kassim's NPI number?
1518410091. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Thamer Kassim works

Medicare's Facility Affiliation Data lists Thamer Kassim at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Thamer Kassim is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.

Group practices

Medicare enrollment lists Thamer Kassim as a member of these groups (CMS data updated 2026-10-02).

  • Cotton-O'neil Clinic Revocable Trust666 clinicians in the group
  • Meritas Health Corporation502 clinicians in the group
  • Saint Francis Medical Center443 clinicians in the group
  • Heartland Regional Medical Center394 clinicians in the group

Specialties

Find other Gastroenterology doctors in Kansas →

Other gastroenterologists in Topeka

Clinicians with the same Medicare primary specialty in Topeka, KS — not a recommendation.

All gastroenterologists in Topeka →

Clinician information

CredentialMD
Graduation year2012
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1518410091
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians