Kathryn Siems, PA
NPI 1356781579 · Physician Assistant · Austin, TX
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Siems, PA is a Physician Assistant provider in Austin, TX (NPI 1356781579).
Provider details
- NPI number
- 1356781579
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- PA05678 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
833 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 344 | $6 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 139 | $77 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 123 | $53 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 70 | $107 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 48 | $95 |
| Biopsy of Related Skin Growth, First Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 108 | 49 |
| Betamethasone/Propylene Glycbrand: Betamethasone Diprop Augmented | 94 | 67 |
| Triamcinolone Acetonide | 79 | 51 |
| Metronidazole | 21 | 11 |
| Finasteride | 19 | 12 |
| Clobetasol Propionate | 18 | 13 |
| Tretinoin | 15 | — |
| Mupirocin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-07-02
- Last updated
- 2021-09-24
- Certified
- 2021-09-24
Frequently asked questions
- What is Kathryn Siems's NPI number?
- Kathryn Siems's National Provider Identifier (NPI) is 1356781579, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Siems's specialty?
- Kathryn Siems is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kathryn Siems located?
- Kathryn Siems's practice location on file with NPPES is 1807 W Slaughter Ln, Austin, TX 78748-6237.
- What is Kathryn Siems's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Siems is (512) 282-8967.
- Does Kathryn Siems accept Medicare?
- Kathryn Siems is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Siems's NPI active?
- Yes — Kathryn Siems's NPI (1356781579) is active in the NPPES registry as of the last update on 2021-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.