Priscilla Sierk, D.O.
NPI 1255352324 · Psychiatry Physician · Austin, TX
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Priscilla Sierk, D.O. is a Psychiatry Physician provider in Austin, TX (NPI 1255352324).
Provider details
- NPI number
- 1255352324
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- L3479 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
313 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 160 | $107 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 153 | $67 |
Typical Medicare-allowed amounts for these services range $67–$107 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 61 | 13 |
| Gabapentin | 46 | — |
| Clonazepam | 38 | — |
| Mirtazapine | 33 | — |
| Deutetrabenazinebrand: Austedo Xr | 28 | — |
| Escitalopram Oxalate | 27 | — |
| Bupropion Hclbrand: Bupropion Hcl Sr |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-22
- Last updated
- 2012-05-24
Frequently asked questions
- What is Priscilla Sierk's NPI number?
- Priscilla Sierk's National Provider Identifier (NPI) is 1255352324, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Priscilla Sierk's specialty?
- Priscilla Sierk is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Priscilla Sierk located?
- Priscilla Sierk's practice location on file with NPPES is 3355 Bee Cave Rd, Austin, TX 78746-6682.
- What is Priscilla Sierk's phone number?
- The practice phone number listed in the NPPES registry for Priscilla Sierk is (512) 870-8180.
- Does Priscilla Sierk accept Medicare?
- Priscilla Sierk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Priscilla Sierk's NPI active?
- Yes — Priscilla Sierk's NPI (1255352324) is active in the NPPES registry as of the last update on 2012-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.