Ian I Armstrong, MD

Primary specialty

Neurological Surgery PhysicianTaxonomy code 207T00000X

License

U0747 Issued in TX

Practice address

7003 Woodway Dr Ste 313
Waco, TX 76712-6163

Phone

(855) 876-7246

Fax

(855) 277-5070

NPI assigned

Aug 7, 2006

Last updated

Oct 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 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://epicproxy.et1096.epichosted.com/FHIRProxy/api/FHIR/DSTU2/
• FHIR API: https://epicproxy.et1096.epichosted.com/FHIRProxy/api/fhir/r4/
• Direct secure messaging: iarmstrong73555@unitedregional.medalliesdirect.net

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.

• United Regional Health Care System Inc

  dba United Regional Heath Care System

  • General Acute Care Hospital
  • Wichita Falls, TX
  • NPI 1023013448
  NPD

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

{
    "created_epoch": "1154908800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1792108800000",
    "number": "1851300859",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10003 TREELINE DR",
            "city": "WOODWAY",
            "state": "TX",
            "postal_code": "767128529",
            "telephone_number": "210-539-9092"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7003 WOODWAY DR STE 313",
            "city": "WACO",
            "state": "TX",
            "postal_code": "767126163",
            "telephone_number": "855-876-7246",
            "fax_number": "855-277-5070"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4883 Williams Dr",
            "address_purpose": "LOCATION",
            "city": "Georgetown",
            "state": "TX",
            "postal_code": "786332430",
            "country_code": "US",
            "telephone_number": "855-876-7246",
            "fax_number": "855-277-5070",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "213 Hunters Vlg",
            "address_purpose": "LOCATION",
            "city": "New Braunfels",
            "state": "TX",
            "postal_code": "781324742",
            "country_code": "US",
            "telephone_number": "855-876-7246",
            "fax_number": "855-277-5070",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3551 Roger Brooke Dr",
            "address_purpose": "LOCATION",
            "city": "Fort Sam Houston",
            "state": "TX",
            "postal_code": "782344504",
            "country_code": "US",
            "telephone_number": "210-539-9092",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3310 E Central Texas Expy Ste 201",
            "address_purpose": "LOCATION",
            "city": "Killeen",
            "state": "TX",
            "postal_code": "765435308",
            "country_code": "US",
            "telephone_number": "855-876-7246",
            "fax_number": "855-277-5070",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2218 S Lakeline Blvd Ste 101",
            "address_purpose": "LOCATION",
            "city": "Cedar Park",
            "state": "TX",
            "postal_code": "786134756",
            "country_code": "US",
            "telephone_number": "855-876-7246",
            "fax_number": "855-277-5070",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ARMSTRONG",
        "first_name": "IAN",
        "middle_name": "I",
        "name_prefix": "Mr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-07",
        "last_updated": "2026-10-16",
        "certification_date": "2026-10-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "TX",
            "license": "U0747",
            "primary": true
        },
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "CA",
            "license": "WA50707C",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "iarmstrong73555@unitedregional.medalliesdirect.net",
            "affiliation": "N",
            "endpointDescription": "United Regional Health Care Inc",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Other",
            "address_1": "1600 11th St",
            "city": "Wichita Falls",
            "state": "TX",
            "country_code": "US",
            "postal_code": "763014300",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Lauren Ardoin, RBT
• Robert Arechiga, LMSW
• Christen Anne Argueta, LMSW
• Robin Argyle, APRN, FNP-C
• Christina A Armijo, FNP
• Mary Armstrong, SLP-INTERN
• Richard E. Armstrong, DDS
• Shawn Errol Armstrong, RN, MSN,ACNP-BC
• Gabrielle Daniel Arndt, PA-C
• Traci Arndt, APRN, FNP-C

• Neurological Surgery Physician in Waco, TX
• Providers in Waco, TX by specialty
• Neurological Surgery Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 16, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.