Thalia N Casimire, MD

Primary specialty

Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X

License

Q6813 Issued in TX

Practice address

13300 Hargrave Rd Ste 100
Houston, TX 77070-4532

Phone

(281) 357-0111

Fax

(281) 255-9639

NPI assigned

Jul 10, 2007

Sex

Female

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Other identifiers 2

Electronic endpoints 1

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

Specialty

Pulmonary Disease

Education

Other, 2004

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

TMH Physician Associates PLLCGroup PAC ID 4486711744, 1,881 clinicians

Southeast Texas Intensivists, PLLCGroup PAC ID 7810342672, 37 clinicians

Christus Trinity Clinic TexasGroup PAC ID 3072426741, 1,540 clinicians

Houston Methodist Specialty PhysiciansGroup PAC ID 5193239796, 1,498 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Houston Methodist Willowbrook Hospital Hospital, Houston, TX, CCN 450844
• Christus Mother Frances Hospital Hospital, Tyler, TX, CCN 450102
• Christus St Michael Health System Hospital, Texarkana, TX, CCN 450801

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: thalia.casimire@hca7.eclinicaldirectplus.com
• Direct secure messaging: tcasimire429525@christushealth.direct-ci.net
• Direct secure messaging: tcasimire457448@direct.sw.org
• Direct secure messaging: tcasimire486854@directb.mercy.net

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.

• Christus Trinity Clinic Texas

  dba Christus Trinity Clinic

  • Family Medicine Physician
  • Tyler, TX
  • NPI 1285684225

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Houston Methodist Specialty Physicians

  • Otolaryngology Physician
  • Houston, TX
  • NPI 1902614332
  Medicare reassignment Care Compare group NPD
• Southeast Texas Intensivists, PLLC

  • Critical Care Medicine (Internal Medicine) Physician
  • Beaumont, TX
  • NPI 1801579867
  Medicare reassignment Care Compare group NPD
• TMH Physician Associates PLLC

  • Ophthalmology Physician
  • Houston, TX
  • NPI 1275779225

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Wael Asi MD PA

  • Critical Care Medicine (Internal Medicine) Physician
  • The Woodlands, TX
  • NPI 1851342794
  Medicare reassignment NPD
• Nuview Health Texas PA

  • Critical Care Medicine (Internal Medicine) Physician
  • Boca Raton, FL
  • NPI 1922538461

  TX

  Medicare reassignment NPD
• Christus Trinity Clinic Texas

  dba Christus Trinity Clinic

  • Rural Health Clinic/Center
  • Winnsboro, TX
  • NPI 1801673165
  NPD
• TMH Physician Associates PLLC

  • Orthopaedic Surgery Physician
  • Spring, TX
  • NPI 1043061351
  NPD
• Methodist Health Centers

  dba Houston Methodist Willowbrook Hospital

  • General Acute Care Hospital
  • Houston, TX
  • NPI 1871619254
  NPD (past)

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

• Christus Health Ark-la-Tex

  dba Christus St. Michael Health System

  • General Practice Physician
  • Texarkana, TX
  • NPI 1184623266

  Hospital

  Care Compare affiliation
• Christus Health Ark-la-Tex

  dba CHRISTUS St. Michael Health System

  • General Acute Care Hospital
  • Texarkana, TX
  • NPI 1295736734
  Care Compare affiliation
• Methodist Health Centers

  dba Houston Methodist Willowbrook Hospital

  • General Acute Care Hospital
  • Houston, TX
  • NPI 1871619254
  Care Compare affiliation
• Mother Frances Hospital Regional Health Care Center

  dba Christus Mother Frances Hospital Tyler

  • General Acute Care Hospital
  • Tyler, TX
  • NPI 1679578439
  Care Compare affiliation

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

{
    "created_epoch": "1184025600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753142400000",
    "number": "1467650507",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "13300 HARGRAVE RD STE 100",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770704532",
            "telephone_number": "281-357-0111",
            "fax_number": "281-255-9639"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "13300 HARGRAVE RD STE 100",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770704532",
            "telephone_number": "281-357-0111",
            "fax_number": "281-255-9639"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "One Mercy Lane",
            "address_2": "Ste 401",
            "address_purpose": "LOCATION",
            "city": "Hot Springs",
            "state": "AR",
            "postal_code": "719136441",
            "country_code": "US",
            "telephone_number": "501-623-5220",
            "fax_number": "501-623-1546",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "18220 State Highway 249 Ste 1360",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770704347",
            "country_code": "US",
            "telephone_number": "281-737-8300",
            "fax_number": "281-737-2945",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "700 Scott and White Dr",
            "address_purpose": "LOCATION",
            "city": "College Station",
            "state": "TX",
            "postal_code": "778456441",
            "country_code": "US",
            "telephone_number": "979-207-0100",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "619 S Fleishel Ave Ste 100",
            "address_purpose": "LOCATION",
            "city": "Tyler",
            "state": "TX",
            "postal_code": "757012004",
            "country_code": "US",
            "telephone_number": "903-606-2830",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CASIMIRE",
        "first_name": "THALIA",
        "middle_name": "N",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-07-10",
        "last_updated": "2025-07-22",
        "certification_date": "2025-07-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "Q6813",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "AR",
            "license": "E8410",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "AR",
            "license": "E-8410",
            "primary": false
        },
        {
            "code": "207RS0012X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Sleep Medicine",
            "state": "AR",
            "license": "E-8410",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "TX",
            "license": "Q6813",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "372873501",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "204394001",
            "state": "AR"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "tcasimire457448@direct.sw.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "700 Scott and White Dr",
            "city": "College Station",
            "state": "TX",
            "country_code": "US",
            "postal_code": "778456441",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Charles Ralph Cashmere Adamo, M.D.,PHD.(A.M.)
• Cashtin Solutions, LLC (Bird Dog MD)
• Gaston Lhebrard Casillas, M.D.
• Mirtha T Casimir, M.D.
• Tam V Casimir, D.O.
• Gina Casini, MD
• Kadon Nathaniel Caskey
• Lesley Diane Casler, PT
• Jamie Denise Casmer, CRNA
• Casoma Hospice LLC

• Critical Care Medicine (Internal Medicine) Physician in Houston, TX
• Providers in Houston, TX by specialty
• Critical Care Medicine (Internal Medicine) Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 22, 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.