NPIMap

Organization Active NPI

U. S. Anesthesia Partners of Texas, P.a.,

Doing business as Greater Houston Anesthesiology, P.A.

  • Anesthesiology Physician
  • Houston, TX
National Provider Identifier
1548208564
Registry record updated Oct 9, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
Legal business name
U. S. ANESTHESIA PARTNERS OF TEXAS, P.A.,
Doing business as
Greater Houston Anesthesiology, P.A.
Practice address
1500 Citywest Blvd
Suite 300
Houston, TX 77042-2300
Phone
(877) 361-1809
Fax
(972) 715-9933
NPI assigned
Jun 3, 2006
Last updated
Oct 9, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Oct 9, 2025

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

Authorized official

Name
Dr. Alvin J Ralston, M.D.NPI 1306998067
Title
President
Phone
(972) 715-5000

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207L00000X Primary
Critical Care Medicine (Anesthesiology) PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207LC0200X
Nurse PractitionerGroup: 193200000X MULTI-SPECIALTY GROUP 363L00000X
Certified Registered Nurse AnesthetistGroup: 193200000X MULTI-SPECIALTY GROUP 367500000X
Anesthesiologist AssistantGroup: 193200000X MULTI-SPECIALTY GROUP 367H00000X

Addresses

Primary practice location

1500 Citywest Blvd
Suite 300
Houston, TX 77042-2300

Mailing address

PO Box 840853
Dallas, TX 75284-0853
Phone (972) 233-1999

Other practice location 1

11100 Shadow Creek Pkwy
Pearland, TX 77584-7285
Phone (972) 715-5000

Other practice location 2

12222 Merit Dr Ste 600
Dallas, TX 75251-3294
Phone (972) 715-5000

Other practice location 3

3705 Medical Pkwy Ste 570
Austin, TX 78705-1024
Phone (972) 715-5000

Other practice location 4

1301 Pennsylvania Ave
Fort Worth, TX 76104-2122
Phone (972) 715-5000

Other practice location 5

600 S Tyler St Ste 2100
Amarillo, TX 79101-2304
Phone (972) 715-5000

Other practice location 6

10999 W Interstate 10 Ste 903
San Antonio, TX 78230-1747
Phone (972) 233-1999

Other names 1

  • Greater Houston Anesthesiology, P.A. Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20031106000563 TX Part B Supplier - Clinic/Group Practice 7315850351 Receives reassigned benefits from 3,784 practitioners

National Provider Directory

National Provider Directory

Locations

17051 Dallas Pkwy
Ste 310
Addison, TX 75001
Phone (972) 733-3090

4700 Seton Center Pkwy
Austin, TX 78759
Phone (346) 440-0644

5410 West Loop S
Bellaire, TX 77401
Phone (713) 314-4444

5201 Harry Hines Blvd
Dallas, TX 75235
Phone (214) 590-1396

6606 Lyndon B Johnson Fwy
Ste 200
Dallas, TX 75240
Phone (469) 364-4109

2817 S Mayhill Rd
Ste 230
Denton, TX 76208
Phone (469) 814-4475

3537 S Interstate 35 E
Ste 306
Denton, TX 76210
Phone (940) 382-2204

125 W Castellano Dr
El Paso, TX 79912
Phone (915) 532-8200

1301 Pennsylvania Ave
#273
Fort Worth, TX 76104

1301 Pennsylvania Ave
Rm 73
Fort Worth, TX 76104

18220 Tomball Pkwy
Ste 330
Houston, TX 77070
Phone (281) 477-6192

2411 Fountain View Dr
Houston, TX 77057
Phone (713) 458-4185

2411 Fountain View Dr
#2455
Houston, TX 77057

2411 Fountain View Dr
Ste 200
Houston, TX 77057
Phone (713) 458-4185

6621 Fannin St
#13270
Houston, TX 77030
Phone (832) 824-2296

9300 Kirby Dr
Ste 200
Houston, TX 77054
Phone (832) 201-5157

1872 Norwood Dr
Ste 100
Hurst, TX 76054
Phone (817) 540-6060

10999 W Interstate 10
Ste 903
San Antonio, TX 78230
Phone (210) 375-7790

1317 Lake Pointe Pkwy
#8320
Sugar Land, TX 77478
Phone (281) 637-7846

Practitioners & affiliated clinicians

Practitioners 3,815

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 3,815

NPI Registry JSON

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

{
    "created_epoch": "1149292800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1759968000000",
    "number": "1548208564",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 840853",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "752840853",
            "telephone_number": "972-233-1999",
            "fax_number": "972-233-3666"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 CITYWEST BLVD",
            "address_2": "SUITE 300",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770422300",
            "telephone_number": "877-361-1809",
            "fax_number": "972-715-9933"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "11100 Shadow Creek Pkwy",
            "address_purpose": "LOCATION",
            "city": "Pearland",
            "state": "TX",
            "postal_code": "775847285",
            "country_code": "US",
            "telephone_number": "972-715-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "12222 Merit Dr Ste 600",
            "address_purpose": "LOCATION",
            "city": "Dallas",
            "state": "TX",
            "postal_code": "752513294",
            "country_code": "US",
            "telephone_number": "972-715-5000",
            "fax_number": "972-715-9976",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3705 Medical Pkwy Ste 570",
            "address_purpose": "LOCATION",
            "city": "Austin",
            "state": "TX",
            "postal_code": "787051024",
            "country_code": "US",
            "telephone_number": "972-715-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1301 Pennsylvania Ave",
            "address_purpose": "LOCATION",
            "city": "Fort Worth",
            "state": "TX",
            "postal_code": "761042122",
            "country_code": "US",
            "telephone_number": "972-715-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "600 S Tyler St Ste 2100",
            "address_purpose": "LOCATION",
            "city": "Amarillo",
            "state": "TX",
            "postal_code": "791012304",
            "country_code": "US",
            "telephone_number": "972-715-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10999 W Interstate 10 Ste 903",
            "address_purpose": "LOCATION",
            "city": "San Antonio",
            "state": "TX",
            "postal_code": "782301747",
            "country_code": "US",
            "telephone_number": "972-233-1999",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "U. S. ANESTHESIA PARTNERS OF TEXAS, P.A.,",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-06-03",
        "last_updated": "2025-10-09",
        "certification_date": "2025-10-09",
        "status": "A",
        "authorized_official_last_name": "RALSTON",
        "authorized_official_first_name": "ALVIN",
        "authorized_official_middle_name": "J",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "972-715-5000",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Anesthesiology",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "207LC0200X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Anesthesiology, Critical Care Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Nurse Practitioner",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "367500000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "367H00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Anesthesiologist Assistant",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Greater Houston Anesthesiology, P.A.",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Greater Houston Anesthesiology, P.A.",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Houston, TX

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 9, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.