Sergio Calixto-Montanez, M.D.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

P40031 Issued in TX

Practice address

6300 Samuell Blvd
Ste. 120
Dallas, TX 75228-7137

Phone

(214) 381-1910

Fax

(214) 381-2868

NPI assigned

Jun 16, 2010

Last updated

Aug 24, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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 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

Family Practice

Education

University of Texas Southwestern Medical School at Dallas, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Union Medical Center PLLCGroup PAC ID 2860937638, 2 clinicians

Grace Southern Medical Clinic PLLCGroup PAC ID 0840504197, 4 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/FEDFDD/Endpoint/FEDFDD

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.

• Grace Southern Medical Clinic, PLLC

  • Primary Care Clinic/Center
  • Dallas, TX
  • NPI 1821486358

  Multi-Specialty

  Medicare reassignment Care Compare group NPD Authorized official
• Union Medical Center PLLC

  dba Union Medical Center

  • Family Medicine Physician
  • Garland, TX
  • NPI 1083453708

  Multi-Specialty

  Medicare reassignment Care Compare group NPD Authorized official
• Muenster Hospital District

  dba MMH ER Group

  • Emergency Medicine Physician
  • Muenster, TX
  • NPI 1972556009

  Multi-Specialty

  Medicare reassignment NPD
• Muenster Hospital District

  dba MMH Family Health Clinic

  • Rural Health Clinic/Center
  • Muenster, TX
  • NPI 1497750962

  Multi-Specialty

  NPD

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

{
    "created_epoch": "1276646400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787529600000",
    "number": "1316268162",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6300 SAMUELL BLVD STE 120",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "752287100",
            "telephone_number": "214-381-1910",
            "fax_number": "214-381-2868"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6300 SAMUELL BLVD",
            "address_2": "STE. 120",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "752287137",
            "telephone_number": "214-381-1910",
            "fax_number": "214-381-2868"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2040 N Belt Line Rd Ste 200",
            "address_purpose": "LOCATION",
            "city": "Mesquite",
            "state": "TX",
            "postal_code": "751505802",
            "country_code": "US",
            "telephone_number": "214-381-1910",
            "fax_number": "214-381-2868",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1605 N Garland Ave Ste A",
            "address_purpose": "LOCATION",
            "city": "Garland",
            "state": "TX",
            "postal_code": "750409418",
            "country_code": "US",
            "telephone_number": "214-501-4135",
            "fax_number": "214-501-4134",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CALIXTO-MONTANEZ",
        "first_name": "SERGIO",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2010-06-16",
        "last_updated": "2026-08-24",
        "certification_date": "2026-08-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "TX",
            "license": "P40031",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "339723401",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Dionne Calhoun, ATC/L, NASM PES
• Kristen Elizabeth Calhoun, MD
• Teresa Ann Calhoun, PTA
• Jacel Marie Calico
• California Anesthesia Providers a Medical Corporation
• Katherine Acuff Calkins, PHARMD
• Peter Steven Calkins, PHARMD
• Call Assure LLC (CallCheck)
• Call of Duty
• Brandon P Call, MD

• Family Medicine Physician in Dallas, TX
• Providers in Dallas, TX by specialty
• Family Medicine Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 24, 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.