U. S. ANESTHESIA PARTNERS OF TEXAS, P.A.,
NPI 1548208564
Anesthesiology in Houston, TX

Active since June 03, 2006
1500 CITYWEST BLVD, SUITE 300, HOUSTON, TX 77042(877) 361-1809(972) 715-9933 Get Directions Write a Review

NPPES record last updated: October 9, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 9, 2025, Oct 13, 2022, Sep 30, 2022 and 6 more (9 updates tracked since 2017).

About U. S. Anesthesia Partners Of Texas, P.a., NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

U. S. ANESTHESIA PARTNERS OF TEXAS, P.A., (NPI 1548208564), doing business as Greater Houston Anesthesiology, P.a., is a healthcare organization registered as an anesthesiology in Houston, Texas and active in the NPI registry since June 2006. The organization maintains 6 additional practice locations and lists Alvin J Ralston, President, as its authorized official.

NPPES Registry Identity

NPI1548208564
Entity TypeOrganization
Primary Taxonomy207L00000X
Legal Business NameU. S. ANESTHESIA PARTNERS OF TEXAS, P.A.,
Location Address1500 CITYWEST BLVD, SUITE 300Houston, TX 77042-2300
Mailing AddressPo Box 840853Dallas, TX 75284-0853 · (972) 233-1999 · Fax (972) 233-3666
Fax(972) 715-9933
Organization SubpartNo
Authorized OfficialAlvin J RalstonPresident · (972) 715-5000
Enumeration DateJune 3, 2006
Last NPPES UpdateOctober 9, 20259 updates tracked since enumeration
NPPES CertifiedOctober 9, 2025
✔ NPI 1548208564 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedAnesthesiology · Critical Care MedicineTaxonomy 207LC0200X
Also ListedNurse PractitionerTaxonomy 363L00000X
Also ListedNurse Anesthetist, Certified RegisteredTaxonomy 367500000X
Also ListedAnesthesiologist AssistantTaxonomy 367H00000X
1500 CITYWEST BLVD, Houston, TX 77042

Other Names 1

Doing Business AsGreater Houston Anesthesiology, P.a.

Secondary Practice Locations 6

Location 111100 Shadow Creek PkwyPearland, TX 77584-7285 · Phone (972) 715-5000
Location 212222 Merit Dr Ste 600Dallas, TX 75251-3294 · Phone (972) 715-5000 · Fax (972) 715-9976
Location 33705 Medical Pkwy Ste 570Austin, TX 78705-1024 · Phone (972) 715-5000
Location 41301 Pennsylvania AveFort Worth, TX 76104-2122 · Phone (972) 715-5000
Location 5600 S Tyler St Ste 2100Amarillo, TX 79101-2304 · Phone (972) 715-5000
Location 610999 W Interstate 10 Ste 903San Antonio, TX 78230-1747 · Phone (972) 233-1999

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

U. S. Anesthesia Partners Of Texas, P.a., is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3,771

Medicare enrollment records show 3,771 clinicians reassign Medicare billing to U. S. Anesthesia Partners Of Texas, P.A.,, which bills Medicare for the services they deliver. Of these, 462 practice at this address and 538 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 10

Certified Registered Nurse Anesthetist (CRNA)2,010
Anesthesiology1,492
Anesthesiology Assistant190
Nurse Practitioner50
Critical Care (Intensivists)12
Interventional Pain Management8
Pain Management5
Internal Medicine2
2 other specialties2

Nearest to this location (20)

See all 3,771
Certified Registered Nurse Anesthetist (CRNA)
NPI 1912550260
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(972) 233-1999
✔ Accepts MedicareSame address
Certified Registered Nurse Anesthetist (CRNA)
NPI 1306144589
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ Accepts MedicareSame address
Certified Registered Nurse Anesthetist (CRNA)
NPI 1902306020
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ Accepts MedicareSame address
Certified Registered Nurse Anesthetist (CRNA)
NPI 1407384779
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ Accepts MedicareSame address
Anesthesiology
NPI 1083603724
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Anesthesiology
NPI 1811198930
1500 CITYWEST BLVD STE. 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Certified Registered Nurse Anesthetist (CRNA)
NPI 1235529371
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ Accepts MedicareSame address
Anesthesiology Assistant
NPI 1104109909
1500 CITYWEST BLVD STE. 300
Houston, TX 77042
(713) 620-4000
✔ Accepts MedicareSame address
Anesthesiology
NPI 1528382546
1500 CITYWEST BLVD STE. 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Anesthesiology
NPI 1639378920
1500 CITYWEST BLVD STE. 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Anesthesiology
NPI 1225067689
1500 CITYWEST BLVD STE. 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Anesthesiology Assistant
NPI 1386927184
1500 CITYWEST BLVD STE. 300
Houston, TX 77042
(713) 620-4000
✔ Accepts MedicareSame address
Anesthesiology Assistant
NPI 1346520681
1500 CITYWEST BLVD STE. 300
Houston, TX 77042
(713) 620-4000
✔ Accepts MedicareSame address
Anesthesiology Assistant
NPI 1720464050
1500 CITYWEST BLVD STE. 300
Houston, TX 77042
(713) 620-4000
✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1588960819
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Critical Care (Intensivists)
NPI 1962759720
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Critical Care (Intensivists)
NPI 1063695336
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1023456076
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1477923464
1500 CITYWEST BLVD
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1023421245
1500 CITYWEST BLVD STE 300
Houston, TX 77042
(713) 620-4000
✔ PECOS✔ Accepts MedicareSame address
See all 3,771 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is U. S. Anesthesia Partners Of Texas, P.A.,'s NPI number?

The NPI number for U. S. Anesthesia Partners Of Texas, P.A., is 1548208564. It was assigned to this organization in the NPPES registry on June 3, 2006. The provider is doing business as Greater Houston Anesthesiology, P.A..

Where is U. S. Anesthesia Partners Of Texas, P.A., located?

U. S. Anesthesia Partners Of Texas, P.A., is located at 1500 Citywest Blvd Suite 300, Houston, TX 77042. The listed phone number is (877) 361-1809.

What is U. S. Anesthesia Partners Of Texas, P.A.,'s specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is U. S. Anesthesia Partners Of Texas, P.A., enrolled in Medicare?

Yes. U. S. Anesthesia Partners Of Texas, P.A., is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through U. S. Anesthesia Partners Of Texas, P.A.,?

According to the CMS Revalidation Reassignment List (October 2026 release), 3,771 clinicians in 10 Medicare specialties reassign their Medicare billing to U. S. Anesthesia Partners Of Texas, P.A.,. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Certified Registered Nurse Anesthetist (CRNA) (2,010), Anesthesiology (1,492) and Anesthesiology Assistant (190). Of these, 462 practice at this address and 538 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does U. S. Anesthesia Partners Of Texas, P.A., accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list U. S. Anesthesia Partners Of Texas, P.A., as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for U. S. Anesthesia Partners Of Texas, P.A., was last updated on October 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.