Karthik Ragunathan, MD
NPI 1497195457ActiveIndividual· Internal Medicine, Gastroenterology· Denison, TX
Internal Medicine, Gastroenterology (MD) with Texomacare Specialty Physicians, practicing in Denison, Texas. In 2024 Medicare paid $121,803 for 377 patients, and Part D covered 298 of their prescriptions, 84% of them generic. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $43.20 in all, mostly food and beverage. Lists Texoma Medical Center as a hospital affiliation.
Overview
| NPI | 1497195457 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 4, 2013 |
| Last updated in NPPES | Mar 6, 2025 |
| Certified by provider | Mar 6, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 04-41687 | KS |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 (MT); Practitioner - Gastroenterology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 377 |
|---|---|
| Services billed | 1,364 across 46 procedure codes |
| Paid by Medicare | $121,803 |
Part D prescriptions in 2024
| Prescriptions (claims) | 298 · 487 30-day fills |
|---|---|
| Patients | 180 |
| Total drug cost | $14,522 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Texomacare Specialty PhysiciansDurant, OK · 38 clinicians
Hospital affiliation
- Texoma Medical CenterDenison, TX
Industry payments (Open Payments)
- 2025$43.20 · 2 payments from 2 companies
- 2024$249.52 · 9 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $23.79 | 1 |
| Phathom Pharmaceuticals, Inc. | $19.41 | 1 |
What the 2025 payments were for
- Food and Beverage$43.20 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Denison
- 1053643072
- 1396958484
- 1447238597
- 1639195746