Quick answers
- Which hospitals does Seth Obrien work at?
- Medicare's official clinician data lists Seth Obrien at 5 hospitals: Ascension Seton Medical Center Austin, North Austin Medical Center, Round Rock Medical Center, St David's Medical Center and St David's South Austin Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Seth Obrien see patients?
- Medicare's clinician data lists 10 practice locations, including Manor, TX, Cedar Park, TX and San Marcos, TX. Call before your visit to confirm the address.
- What is Seth Obrien's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Seth Obrien accept Medicare assignment?
- Yes. Medicare's clinician data says Seth Obrien 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 Seth Obrien?
- (512) 776-1158, as listed in official Medicare / NPI Registry data.
- What is Seth Obrien's NPI number?
- 1053420026. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Seth Obrien works
Medicare's Facility Affiliation Data lists Seth Obrien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Seton Medical Center AustinAustin, TX · Acute Care Hospital · CCN 450056
- North Austin Medical CenterAustin, TX · Acute Care Hospital · CCN 450809
- Round Rock Medical CenterRound Rock, TX · Acute Care Hospital · CCN 450718
- St David's Medical CenterAustin, TX · Acute Care Hospital · CCN 450431
- St David's South Austin Medical CenterAustin, TX · Acute Care Hospital · CCN 450713
Practice locations
Addresses where Seth Obrien is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.
- 12700 Lexington St, Unit 300Manor, TX 78653 (512) 776‑1158
- 12800 W Parmer Lane, Suite 200Cedar Park, TX 78613 (512) 485‑7199
- 1348 N Hwy 123, Suite BSan Marcos, TX 78666 (512) 392‑1831
- 170 Benney Ln, Suite 101Dripping Springs, TX 78620 (512) 776‑1176
- 2000 Scenic DrGeorgetown, TX 78626 (512) 930‑5338
Group practices
Medicare enrollment lists Seth Obrien as a member of these groups (CMS data updated 2026-10-02).
- Singleton Associates PA838 clinicians in the group
- Austin Radiological Association127 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053420026 |
| 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