Karthik Ragunathan, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

04-41687 Issued in KS

Practice address

5012 S US Highway 75 Ste 250
Denison, TX 75020-4587

Phone

(903) 416-6255

Fax

(903) 416-6257

NPI assigned

Jul 4, 2013

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in TX, MT2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Gastroenterology

Education

Other, 2011

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Texomacare Specialty PhysiciansGroup PAC ID 4880858364, 37 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Texoma Medical Center Hospital, Denison, TX, CCN 450324
• TMC- Bonham Hospital Hospital, Bonham, TX, CCN 451370

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: kragunathan93281@stormontvaildirect.org
• Direct secure messaging: karthik.ragunathan@tcsp.eclinicaldirectplus.com
• FHIR API: https://fhir4.healow.com/fhir/r4/FDAGBA

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Texomacare Specialty Physicians

  • Cardiovascular Disease Physician
  • Denison, TX
  • NPI 1548541733

  Gastroenterology

  Medicare reassignment Care Compare group NPD
• Texomacare

  • Family Medicine Physician
  • Denison, TX
  • NPI 1740233592

  Gastroenterology

  Medicare reassignment NPD
• Billings Clinic

  • Emergency Care Clinic/Center
  • Billings, MT
  • NPI 1326104845
  Medicare reassignment NPD
• Texomacare

  • Family Medicine Physician
  • Denison, TX
  • NPI 1912419250
  NPD
• Billings Clinic

  • General Practice Physician
  • Billings, MT
  • NPI 1376598714

  Gastroenterology

  NPD
• Billings Clinic

  • Pediatrics Physician
  • Bozeman, MT
  • NPI 1902340821
  NPD
• Uhs of Texoma, Inc

  • General Acute Care Hospital
  • Denison, TX
  • NPI 1851390967
  NPD (past)
• Billings Clinic

  • General Acute Care Hospital
  • Billings, MT
  • NPI 1265478291
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Fannin County Hospital Authority

  • Critical Access Hospital
  • Bonham, TX
  • NPI 1760417646
  Care Compare affiliation
• Uhs of Texoma, Inc

  • General Acute Care Hospital
  • Denison, TX
  • NPI 1851390967
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1372896000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741219200000",
    "number": "1497195457",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5012 S US HIGHWAY 75 STE 250",
            "city": "DENISON",
            "state": "TX",
            "postal_code": "750204587",
            "telephone_number": "903-416-6255",
            "fax_number": "903-416-6257"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5012 S US HIGHWAY 75 STE 250",
            "city": "DENISON",
            "state": "TX",
            "postal_code": "750204587",
            "telephone_number": "903-416-6255",
            "fax_number": "903-416-6257"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RAGUNATHAN",
        "first_name": "KARTHIK",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2013-07-04",
        "last_updated": "2025-03-06",
        "certification_date": "2025-03-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "KS",
            "license": "04-41687",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "kragunathan93281@stormontvaildirect.org",
            "affiliation": "Y",
            "endpointDescription": "SVH Secure messaging",
            "affiliationName": "COTTON O'NEIL CLINIC REVOCABLE TRUST",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "720 SW Lane St",
            "city": "Topeka",
            "state": "KS",
            "country_code": "US",
            "postal_code": "666061539",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "kragunathan93281@stormontvaildirect.org",
            "affiliation": "Y",
            "endpointDescription": "SVH Secure messaging",
            "affiliationName": "STORMONT-VAIL HEALTHCARE INC",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "720 SW Lane St",
            "city": "Topeka",
            "state": "KS",
            "country_code": "US",
            "postal_code": "666061539",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Adrienne Prince, RN
• Kellie R Pyle
• Mir M. a Quadri, M.D
• Gina Sue Quary, COTA
• R Lee Ennis MD PA
• Leslie Lynn Rainey, M.S., CCC-SLP
• Isabell Renee Rainville, SLPA
• Ravi Physicians PLLC
• Susan Rawlins, RNC, WHNP
• Red River Medical Services

• Gastroenterology Physician in Denison, TX
• Providers in Denison, TX by specialty
• Gastroenterology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 6, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.