Justin Thankachan, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

24623 Issued in OK

Practice address

1120 S Utica Ave
Tulsa, OK 74104-4090

Phone

(918) 579-1000

NPI assigned

Feb 13, 2007

Last updated

Feb 16, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in OK, TX, NE3 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 3

Specialty

Hospitalist

Education

University of Oklahoma College of Medicine, 2005

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Cherokee NationGroup PAC ID 5799698742, 446 clinicians

Creek Nation Hospital and ClinicsGroup PAC ID 5698786226, 364 clinicians

Ahs Oklahoma Physician Group LLCGroup PAC ID 9436122496, 314 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Cherokee Nation W W Hastings Indian Hospital Hospital, Tahlequah, OK, CCN 370171
• Hillcrest Medical Center Hospital, Tulsa, OK, CCN 370001
• Council Oak Comprehensive Healthcare Hospital, Tulsa, OK, CCN 370244
• Creek Nation Community Hospital Hospital, Okemah, OK, CCN 371333
• Muscogee (Creek) Nation Medical Center Hospital, Okmulgee, OK, CCN 370057

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://epicproxy.ardenthealth.com/fhir/UPC/api/FHIR/R4
• Direct secure messaging: jthankachan17809@muscogeecreeknation.direct-ci.com
• Direct secure messaging: jthankachan190951@ahs.direct-ci.com

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

• Ahs Oklahoma Physician Group LLC

  dba Utica Park Clinic

  • Family Medicine Physician
  • Tulsa, OK
  • NPI 1235182775

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Cherokee Nation

  • Multi-Specialty Clinic/Center
  • Sallisaw, OK
  • NPI 1780692723

  TX

  Medicare reassignment Care Compare group NPD
• Creek Nation Hospital & Clinics

  dba Creek Nation Community Hospital

  • Family Medicine Physician
  • Okemah, OK
  • NPI 1467053173

  TX

  Medicare reassignment Care Compare group NPD
• Creek Nation Hospital & Clinics

  dba Creek Nation Health System

  • Clinic/Center
  • Muskogee, OK
  • NPI 1366593923

  Internal Medicine

  Medicare reassignment NPD
• Healthfirst Physicians Management Services, Inc

  • Hospitalist Physician
  • Oklahoma City, OK
  • NPI 1891962460

  Internal Medicine

  Medicare reassignment NPD
• McCurtain Memorial Medical Management, Inc.

  dba McCurtain Memorial Hospital

  • Rural Acute Care Hospital
  • Idabel, OK
  • NPI 1629020177
  Medicare reassignment NPD
• St. John Physicians, Inc.

  • Internal Medicine Physician
  • Tulsa, OK
  • NPI 1336194406
  Medicare reassignment NPD
• Grand Island Regional Medical Center

  • Emergency Medicine Physician
  • Grand Island, NE
  • NPI 1225658495
  Medicare reassignment NPD
• Ahs Oklahoma Physician Group, LLC

  dba Cushing Medical Specialist

  • Rural Health Clinic/Center
  • Cushing, OK
  • NPI 1922683051
  NPD
• Cherokee Nation

  dba Cherokee Nation Public Health

  • Public Health or Welfare Agency
  • Tahlequah, OK
  • NPI 1013884154
  NPD
• Cherokee Nation

  • Multi-Specialty Clinic/Center
  • Salina, OK
  • NPI 1326054081
  NPD
• Cherokee Nation

  • Multi-Specialty Clinic/Center
  • Muskogee, OK
  • NPI 1841207156
  NPD

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

• Ahs Hillcrest Medical Center, LLC

  dba Hillcrest Medical Center

  • General Acute Care Hospital
  • Tulsa, OK
  • NPI 1629057229
  Care Compare affiliation
• Cherokee Nation

  • General Acute Care Hospital
  • Tahlequah, OK
  • NPI 1275799645
  Care Compare affiliation
• Cherokee Nation

  • Multi-Specialty Clinic/Center
  • Claremore, OK
  • NPI 1497568968

  Hospital

  Care Compare affiliation
• Creek Nation Hospital & Clinics

  dba Muscogee (Creek) Nation Long Term Acute Care Hospital

  • Long Term Care Hospital
  • Okmulgee, OK
  • NPI 1376979955
  Care Compare affiliation
• Creek Nation Hospital & Clinics

  dba Muscogee (Creek) Nation Medical Center

  • General Acute Care Hospital
  • Okmulgee, OK
  • NPI 1902236573
  Care Compare affiliation

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

{
    "created_epoch": "1171324800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771200000000",
    "number": "1851433221",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6224 E 89TH ST",
            "city": "TULSA",
            "state": "OK",
            "postal_code": "741373127",
            "telephone_number": "918-938-2694"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1120 S UTICA AVE",
            "city": "TULSA",
            "state": "OK",
            "postal_code": "741044090",
            "telephone_number": "918-579-1000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "19600 E Ross St",
            "address_purpose": "LOCATION",
            "city": "Tahlequah",
            "state": "OK",
            "postal_code": "744640545",
            "country_code": "US",
            "telephone_number": "539-234-2250",
            "fax_number": "918-888-5270",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10109 E 79th St",
            "address_purpose": "LOCATION",
            "city": "Tulsa",
            "state": "OK",
            "postal_code": "741334682",
            "country_code": "US",
            "telephone_number": "918-233-9550 x8331",
            "fax_number": "918-216-8094",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "THANKACHAN",
        "first_name": "JUSTIN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-02-13",
        "last_updated": "2026-02-16",
        "certification_date": "2026-02-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OK",
            "license": "24623",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200201520A",
            "state": "OK"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Cory Ray Thackeray
• Mark H Thai, DO
• Caleb Tham
• Laura Tham
• Michael Thambuswamy, MD
• Melanie Thao
• Muase Thao
• Rebecca A Thapa
• Ajit Kurien Tharakan, M.D.
• Bobby Joseph Tharayil, M.D.

• Internal Medicine Physician in Tulsa, OK
• Providers in Tulsa, OK by specialty
• Internal Medicine Physician in Oklahoma

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 16, 2026; 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.