Quick answers
- Which hospitals does Thomas R. Lasater work at?
- Medicare's official clinician data lists Thomas R. Lasater at 4 hospitals: Ascension Seton Cedar Park, Ascension Seton Hays, Ascension Seton Medical Center Austin and Dell Seton Medical Center at the University of TX. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas R. Lasater see patients?
- Medicare's clinician data lists 5 practice locations, including Austin, TX. Call before your visit to confirm the address.
- What is Thomas R. Lasater's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Thomas R. Lasater accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas R. Lasater accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Thomas R. Lasater?
- (512) 324-3580, as listed in official Medicare / NPI Registry data.
- What is Thomas R. Lasater's NPI number?
- 1417477647. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas R. Lasater works
Medicare's Facility Affiliation Data lists Thomas R. Lasater at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Seton Cedar ParkCedar Park, TX · Acute Care Hospital · CCN 670043
- Ascension Seton HaysKyle, TX · Acute Care Hospital · CCN 670056
- Ascension Seton Medical Center AustinAustin, TX · Acute Care Hospital · CCN 450056
- Dell Seton Medical Center at the University of TXAustin, TX · Acute Care Hospital · CCN 450124
Practice locations
Addresses where Thomas R. Lasater is enrolled with Medicare (CMS data updated 2026-10-02).
- 1004 W 32nd St, 200 Ascension Texas Spine and ScoliosisAustin, TX 78705 (512) 324‑3580
- 1201 W 38th StAustin, TX 78705
- 1400 N Ih 35Austin, TX 78701
- 1400 N Ih 35 Ll, Cl400 Tri County Prac AssocAustin, TX 78701 (512) 324‑7300
- 1500 Red River StAustin, TX 78701 (512) 324‑7000
Group practices
Medicare enrollment lists Thomas R. Lasater as a member of this group (CMS data updated 2026-10-02).
- Seton Family of Doctors792 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Austin
Clinicians with the same Medicare primary specialty in Austin, TX — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417477647 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians