John Michael Therwhanger, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

308026 Issued in LA

Practice address

2913 Carterton CT
Flower Mound, TX 75022-5170

Phone

(214) 564-1525

NPI assigned

Apr 15, 2015

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in TX

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 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

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.

• Questcare Medical Services, PLLC

  • Emergency Medicine Physician
  • Dallas, TX
  • NPI 1912059247
  Medicare reassignment NPD
• Questcare Medical Services, PLLC

  • Nurse Practitioner
  • Arlington, TX
  • NPI 1497807713

  Emergency Medicine

  NPD

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

{
    "created_epoch": "1429056000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786924800000",
    "number": "1255727384",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 CORPORATE BLVD",
            "city": "LAFAYETTE",
            "state": "LA",
            "postal_code": "705083870",
            "telephone_number": "800-893-9698"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2913 CARTERTON CT",
            "city": "FLOWER MOUND",
            "state": "TX",
            "postal_code": "750225170",
            "telephone_number": "214-564-1525"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THERWHANGER",
        "first_name": "JOHN",
        "middle_name": "MICHAEL",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2015-04-15",
        "last_updated": "2026-08-17",
        "certification_date": "2026-08-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "LA",
            "license": "308026",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "TX",
            "license": "R6299",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• The Healthy Place LLC
• The Vein Clinic of Dallas LLC
• The Waterbird Corporation
• Therapy Time Home Care LLC
• Thermotek Inc
• Thomas Tenney DMD, LTD.
• Dane Stephen Thomas, P.A.
• Elizabeth Thomas, PHARMD
• Hema Kottayadiyil Thomas, PA-C
• Meagan Renae Thomas, LCSW

• Emergency Medicine Physician in Flower Mound, TX
• Providers in Flower Mound, TX by specialty
• Emergency Medicine Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 17, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.