Quick answers
- Which hospitals does John K. Tsai work at?
- Medicare's official clinician data lists John K. Tsai at 1 hospital: St David's South Austin Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John K. Tsai see patients?
- Medicare's clinician data lists 7 practice locations, including Leander, TX, Bee Cave, TX and West Lake Hills, TX. Call before your visit to confirm the address.
- What is John K. Tsai's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does John K. Tsai accept Medicare assignment?
- Yes. Medicare's clinician data says John K. Tsai 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.
- Does John K. Tsai offer telehealth?
- Medicare's clinician data says John K. Tsai offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John K. Tsai?
- (512) 244-2273, as listed in official Medicare / NPI Registry data.
- What is John K. Tsai's NPI number?
- 1437321791. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John K. Tsai works
Medicare's Facility Affiliation Data lists John K. Tsai at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St David's South Austin Medical CenterAustin, TX · Acute Care Hospital · CCN 450713
Practice locations
Addresses where John K. Tsai is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1361 Hero WayLeander, TX 78641 (512) 244‑2273
- 3944 RR 620, Bldg 6 Suite 202Bee Cave, TX 78738 (512) 448‑4558
- 5656 Bee Caves Rd, Suite J202West Lake Hills, TX 78746 (512) 448‑4558
- 7200 Wyoming Springs Dr, Suite 1300Round Rock, TX 78681 (512) 244‑2273
- 7951 Shoal Creek Blvd, Suite 110Austin, TX 78757 (512) 579‑2676
Group practices
Medicare enrollment lists John K. Tsai as a member of this group (CMS data updated 2026-10-02).
- Austin Gastroenterology PLLC76 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Leander
Clinicians with the same Medicare primary specialty in Leander, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1437321791 |
| 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