Karthik Ragunathan, MD
Gastroenterology Physician · Denison, TX
Karthik Ragunathan, MD is a gastroenterology physician with a practice address in Denison, Texas, and NPI 1497195457, issued on Jul 4, 2013. Check the license on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Karthik Ragunathan
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 04-41687 KS
Self-reported in NPPES; status is on the state search - Practice location
- 5012 S US Highway 75 Ste 250, Denison, TX 75020
- Phone
- (903) 416-6255
- Enumerated
- Jul 4, 2013
- Record last updated
- Mar 6, 2025
- Fax
- (903) 416-6257
- Medicare enrollment
- Enrolled (PECOS I20240315003414); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 5012 S US Highway 75 Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica Reese, FNPFamily Nurse Practitioner1841955986
- Stacey Thornton, M.D.Obstetrics & Gynecology Physician1831158278
Verify Karthik Ragunathan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average gastroenterology physician in 2024
298 Medicare Part D claims for 180 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Omeprazole87 claims
- Pantoprazole Sodium67 claims
- Suflave20 claims
- Gavilyte-G18 claims
- Peg-3350 And Electrolytes16 claims
- Budesonide Dr12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $249.52
9 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Texomacare Specialty PhysiciansDenison, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karthik Ragunathan among 1,478 gastroenterology physician records in Texas
Karthik Ragunathan, MD is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 77% of them.
- NPI issued2013 · 77% of these records are older, 20% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2011 · median 2003 among the 1,175 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
All 1,478 in Texas → Every provider in Denison → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Onpan Cheung, M.D., M.P.H.Denison, TX 750201639195746
- Nhat Nguyen, M.D.Denison, TX 750201053643072
- Richard Saltz, M.D.Denison, TX 750201447238597
- Tung Tran, M.D.Denison, TX 750201396958484
- Shailesh Mehta, M.D.Flower Mound, TX 750221184600041
- Muhammad Arif, M.D.Plano, TX 750241679709380
- Gowri Balachandar, M.D.Plano, TX 750241669435889
- Jason Edling, M.D.Plano, TX 750251912983206
Common questions
What is Karthik Ragunathan, MD's NPI number?
Karthik Ragunathan, MD's National Provider Identifier (NPI) is 1497195457, issued on Jul 4, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Karthik Ragunathan, MD located?
The NPPES record lists a practice address at 5012 S US Highway 75 Ste 250, Denison, TX, 75020. Phone: (903) 416-6255. Providers update this record themselves, so call before visiting.
How can I verify Karthik Ragunathan, MD's license?
Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karthik Ragunathan, MD prescribe under Medicare Part D?
In 2024, Karthik Ragunathan, MD had 298 Medicare Part D claims for 180 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.