Nathan John Hallier, MD

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

V0414 Issued in TX

Practice address

6410 Fannin St Ste 350
Houston, TX 77030-3004

Phone

(806) 773-6805

NPI assigned

Mar 30, 2022

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

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

Obstetrics/Gynecology

Education

Other, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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

{
    "created_epoch": "1648598400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783641600000",
    "number": "1740920735",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6431 FANNIN ST # 3.286",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301501"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6410 FANNIN ST STE 350",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770303004",
            "telephone_number": "806-773-6805"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HALLIER",
        "first_name": "NATHAN",
        "middle_name": "JOHN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-03-30",
        "last_updated": "2026-07-10",
        "certification_date": "2026-07-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "TX",
            "license": "V0414",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Demetria Halley
• Patricia Halley, MS, LPC-S
• Maya Jane Halliburton, MD
• Stephanie Halliday
• Wendy S Halliday, MOT, OTR
• Thomas M Hallisey, D.C.
• Charles Harlow Hallman, M.D.
• Ernest Antonious Hallman II, MA
• Hallmark Medical Supply LLC
• Hallmark Psychological Services, PLLC (Hallmark Psychological Services)

• Obstetrics & Gynecology Physician in Houston, TX
• Providers in Houston, TX by specialty
• Obstetrics & Gynecology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 10, 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.