NPI age
12 years
Enumerated 2013-07-02
● Active
Type 1 · Individual
Kathryn Christen Siems, PA
Siems is 1 of 594 physician assistant providers in Austin and 1 of 11022 in Texas.
Primary specialty
Physician Assistant
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2021-09-24
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 11022 active physician assistant providers in Texas.
NPI age
12 years
↑ 2 yr above median (10 yr)
State licenses
1 state
7% of peers hold multiple states
Subspecialties
0
23% of peers hold subspecialties
NPI lifetime · 2013 → 2026
2013-07Enumerated in NPPES
2013
2026
Where they practice
Practice location
1807 W Slaughter Ln, Ste 490
Austin, TX 787486237
Mailing address
6210 E Hwy 290
Austin, TX 787231142
Specialties
-
Physician Assistant PrimaryA physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally...
Practice context
Part of a multi-provider practice. 13 other active providers share this practice address in NPPES.
Recently enumerated nearby: 9 new physician assistant providers have been added in Austin in the last 180 days.
See all →
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Request a quote →How to verify this provider
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.