Nicholas A. Simpson, C-AA
NPI 1053020727ActiveIndividual· Anesthesiologist Assistant· Saint Louis, MO
Anesthesiologist Assistant (C-AA) with Austin Anesthesiology Group PLLC, practicing in Saint Louis, Missouri. Medicare paid $12,870 for services to 138 patients in 2024. Merck Sharp & Dohme LLC was the largest of 2 companies reporting payments in 2025, $39.36 in all, mostly food and beverage. Lists St David's Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1053020727 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | C-AA |
| Sole proprietor | No |
| NPI issued | Nov 21, 2022 |
| Last updated in NPPES | Nov 21, 2022 |
| Certified by provider | Nov 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiologist Assistant Primary | 367H00000X | PENDING | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Anesthesiology Assistant (MO); Practitioner - Anesthesiology Assistant (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 138 |
|---|---|
| Services billed | 138 across 49 procedure codes |
| Paid by Medicare | $12,870 |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Anesthesiology Assistant |
Medical group
- Austin Anesthesiology Group PLLCRound Rock, TX · 428 clinicians
Hospital affiliations
- St David's Medical CenterAustin, TX
- St David's South Austin Medical CenterAustin, TX
Industry payments (Open Payments)
- 2025$39.36 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $21.28 | 1 |
| Aurinia Pharma U.S., Inc. | $18.08 | 1 |
What the 2025 payments were for
- Food and Beverage$39.36 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 178 Anesthesiologist Assistant providers in Saint Louis · All Anesthesiologist Assistant providers in Missouri