Sondra Walker, MD
NPI 1528228129 · Anesthesiology Physician · Austin, TX
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sondra Walker, MD is a Anesthesiology Physician provider in Austin, TX (NPI 1528228129).
Provider details
- NPI number
- 1528228129
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- P4526 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 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
676 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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 436 | $54 |
| Anesthesia for Retinal Surgery00145 | 85 | $106 |
| Anesthesia for Procedure on Eyelid00103 | 50 | $95 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 40 | $61 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 20 | $72 |
| Anesthesia for Other Procedure on Urinary System Through Urethra00910 | 17 | $79 |
| Anesthesia for Exam of Colon Using an Endoscope |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 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
- 2008-06-17
- Last updated
- 2013-10-11
Frequently asked questions
- What is Sondra Walker's NPI number?
- Sondra Walker's National Provider Identifier (NPI) is 1528228129, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sondra Walker's specialty?
- Sondra Walker is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Sondra Walker located?
- Sondra Walker's practice location on file with NPPES is 8140 N Mopac Expy Ste 3-210, Austin, TX 78759-8862.
- What is Sondra Walker's phone number?
- The practice phone number listed in the NPPES registry for Sondra Walker is (512) 343-6229.
- Does Sondra Walker accept Medicare?
- Sondra Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sondra Walker's NPI active?
- Yes — Sondra Walker's NPI (1528228129) is active in the NPPES registry as of the last update on 2013-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.