Quick answers
- Where does Kathryn C. Siems see patients?
- Medicare's clinician data lists 5 practice locations, including Austin, TX. Call before your visit to confirm the address.
- What is Kathryn C. Siems's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Kathryn C. Siems accept Medicare assignment?
- Yes. Medicare's clinician data says Kathryn C. Siems 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 Kathryn C. Siems?
- (512) 282-8967, as listed in official Medicare / NPI Registry data.
- What is Kathryn C. Siems's NPI number?
- 1356781579. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Kathryn C. Siems is enrolled with Medicare (CMS data updated 2026-10-02).
- 1807 W Slaughter Ln, 490 Arc SouthwestAustin, TX 78748 (512) 282‑8967
- 3816 S 1st St, Arc South 1st PediatricsAustin, TX 78704 (512) 443‑1311
- 3828 S 1st St, Arc South 1stAustin, TX 78704 (512) 443‑1311
- 6835 Austin Ctr BlvdAustin, TX 78731 (512) 346‑6611
- 708 W Ben White BlvdAustin, TX 78704
Group practices
Medicare enrollment lists Kathryn C. Siems as a member of this group (CMS data updated 2026-10-02).
- Austin Regional Clinic PA397 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Austin
Clinicians with the same Medicare primary specialty in Austin, TX — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 2007 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1356781579 |
| 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
- 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