Quick answers
- Does Rishi Grewal accept Medicare assignment?
- Yes. Medicare's clinician data says Rishi Grewal accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Rishi Grewal see?
- In 2024, CMS data shows 616 Original Medicare patients and 1,227 services for Rishi Grewal. This counts Original Medicare only and measures volume, not quality.
- What is Rishi Grewal's NPI number?
- 1417054404. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Rishi Grewal, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 616 |
|---|---|
| Services billed to Medicare | 1,227 |
| Different services or procedures | 46 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)336 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)209 services
- Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)92 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)92 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)87 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Ischemic heart disease41%
- Chronic kidney disease41%
- Diabetes40%
Hospitals where Rishi Grewal works
Medicare's Facility Affiliation Data lists Rishi Grewal at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- AdventHealth Shawnee MissionShawnee Mission, KS · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 170104
- AdventHealth South Overland Park, IncOverland Park, KS · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 170208
- Carroll County Memorial HospitalCarrollton, MO · Critical Access Hospital · Emergency services: listed by Medicare · CCN 261332
- NKC HealthNorth Kansas City, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260096
- Stormont Vail HospitalTopeka, KS · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 170086
Practice locations
Addresses where Rishi Grewal is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 9; the Medicare profile lists all.
- 1500 SW 10h AveTopeka, KS 66604 (785) 354‑6000
- 1502 N Jefferson StCarrollton, MO 64633 (660) 542‑1695
- 1600 N 2nd StClinton, MO 64735 (660) 885‑8171
- 2790 Clay Edwards Dr, Suite 1235North Kansas City, MO 64116 (816) 691‑1920
- 720 SW Lane StTopeka, KS 66606 (785) 270‑4800
Group practices
Medicare enrollment lists Rishi Grewal as a member of these groups (CMS data updated October 2, 2026).
- Cotton-O'neil Clinic Revocable Trust666 clinicians in the group
- Meritas Health Corporation502 clinicians in the group
- Shawnee Mission Medical Center Inc286 clinicians in the group
- Golden Valley Memorial Hospital District139 clinicians in the group
- Carroll County Memorial Hospital67 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Topeka
Clinicians with the same Medicare primary specialty in Topeka, KS — not a recommendation.
Other clinicians in Cotton-O'neil Clinic Revocable Trust
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417054404 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians