Sumit A. Walia, MD
NPI 1295963247ActiveIndividual· Internal Medicine, Gastroenterology· Oklahoma City, OK
Internal Medicine, Gastroenterology (MD) in Oklahoma City, Oklahoma, trained at University of Oklahoma College of Medicine (class of 2009). Their prescriptions cost Medicare Part D more than their services did: $510,385 for 1,409 claims, against $250,677 paid for services in 2024. Abbvie Inc. was the largest of 18 companies reporting payments in 2025, $2,381 in all, mostly food and beverage.
Overview
| NPI | 1295963247 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 29, 2009 |
| Last updated in NPPES | Aug 26, 2026 |
| Certified by provider | Aug 26, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 29236 | OK |
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 (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 464 |
|---|---|
| Services billed | 12,523 across 33 procedure codes |
| Paid by Medicare | $250,677 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,409 · 2,285 30-day fills |
|---|---|
| Patients | 510 |
| Total drug cost | $510,385 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Digestive Disease Specialists IncOklahoma City, OK · 18 clinicians
- Integris Bass Baptist Health CenterEnid, OK · 9 clinicians
Hospital affiliations
- Integris Baptist Medical Center, IncOklahoma City, OK
- Integris Canadian Valley HospitalYukon, OK
- Integris Health Enid HospitalEnid, OK
- Oklahoma Heart Hospital, LLCOklahoma City, OK
Industry payments (Open Payments)
- 2025$2,381 · 122 payments from 18 companies
- 2024$1,496 · 107 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $685.99 | 44 |
| Janssen Biotech, Inc. | $311.78 | 18 |
| Takeda Pharmaceuticals U.S.A., Inc. | $263.15 | 13 |
| Lilly USA, LLC | $250.73 | 11 |
| Medtronic, Inc. | $197.00 | 4 |
What the 2025 payments were for
- Food and Beverage$2,297 · 121 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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