Ramsey Kamel Umar, M.D.
NPI 1134202500ActiveIndividual· Internal Medicine, Gastroenterology· Mesa, AZ
Internal Medicine, Gastroenterology (M.D.) in Mesa, Arizona, trained at University of North Carolina at Chapel Hill School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $668,426 for 1,316 claims, against $165,956 paid for services in 2024. Abbvie Inc. was the largest of 16 companies reporting payments in 2025, $1,384 in all, mostly food and beverage.
Overview
| NPI | 1134202500 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 21, 2006 |
| Last updated in NPPES | Sep 30, 2024 |
| Certified by provider | Sep 30, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 35904 | AZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 831 |
|---|---|
| Services billed | 1,696 across 40 procedure codes |
| Paid by Medicare | $165,956 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,316 · 3,213 30-day fills |
|---|---|
| Patients | 470 |
| Total drug cost | $668,426 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of North Carolina at Chapel Hill School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Banner - University Medical Center PhoenixPhoenix, AZ
- Banner Baywood Medical CenterMesa, AZ
- Banner Desert Medical CenterMesa, AZ
- Banner Gateway Medical CenterGilbert, AZ
Industry payments (Open Payments)
- 2025$1,384 · 61 payments from 16 companies
- 2024$1,297 · 64 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $369.33 | 18 |
| Ipsen Biopharmaceuticals, Inc | $265.09 | 7 |
| Gilead Sciences, Inc. | $240.97 | 12 |
| Genzyme Corporation | $104.28 | 4 |
| Phathom Pharmaceuticals, Inc. | $65.86 | 4 |
What the 2025 payments were for
- Food and Beverage$1,384 · 61 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Mesa
- 1003906751
- 1063458735
- 1174796999
- 1245439223
- 1265813349
- 1275673915
- 1346219433
- 1366437337
- 1366974164
- 1528053121
- 1538264684
- 1548370109
All 53 gastroenterologists in Mesa · All gastroenterologists in Arizona