Quick answers
- Which hospitals does Karthik Ragunathan work at?
- Medicare's official clinician data lists Karthik Ragunathan at 1 hospital: Texoma Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Karthik Ragunathan see patients?
- Medicare's clinician data lists 1 practice location in Denison, TX. Call before your visit to confirm the address.
- What is Karthik Ragunathan's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Karthik Ragunathan accept Medicare assignment?
- Yes. Medicare's clinician data says Karthik Ragunathan 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 Karthik Ragunathan?
- (903) 416-2229, as listed in official Medicare / NPI Registry data.
- What is Karthik Ragunathan's NPI number?
- 1497195457. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Karthik Ragunathan works
Medicare's Facility Affiliation Data lists Karthik Ragunathan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Texoma Medical CenterDenison, TX · Acute Care Hospital · CCN 450324
Practice locations
Addresses where Karthik Ragunathan is enrolled with Medicare (CMS data updated 2026-10-02).
- 5012 S US Hwy 75, Suite 105Denison, TX 75020 (903) 416‑2229
Group practices
Medicare enrollment lists Karthik Ragunathan as a member of this group (CMS data updated 2026-10-02).
- Texomacare Specialty Physicians38 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Denison
Clinicians with the same Medicare primary specialty in Denison, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497195457 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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