Carolyn Chay Costilow
NPI 1538836846ActiveIndividual· Nurse Anesthetist, Certified Registered· Oxford, MS
Nurse Anesthetist, Certified Registered with Willow Anesthesia Services LLC, practicing in Oxford, Mississippi. Medicare paid $22,377 for services to 219 patients in 2024. Pacira Pharmaceuticals Incorporated was the largest of 2 companies reporting payments in 2025, $52.92 in all, mostly food and beverage. Lists University of Mississippi Medical Center- Grenada as a hospital affiliation.
Overview
| NPI | 1538836846 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Aug 24, 2021 |
| Last updated in NPPES | Mar 14, 2023 |
| Certified by provider | Mar 14, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Anesthetist, Certified Registered Primary | 367500000X | 141317 | MS |
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 - Certified Registered Nurse Anesthetist (CRNA) (MS); Practitioner - Certified Registered Nurse Anesthetist (CRNA) (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 219 |
|---|---|
| Services billed | 232 across 56 procedure codes |
| Paid by Medicare | $22,377 |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Certified Registered Nurse Anesthetist (Crna) |
Medical group
- Willow Anesthesia Services LLCOxford, MS · 55 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$52.92 · 3 payments from 2 companies
- 2024$29.55 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pacira Pharmaceuticals Incorporated | $38.59 | 2 |
| Boston Scientific Corporation | $14.33 | 1 |
What the 2025 payments were for
- Food and Beverage$52.92 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 39 nurse anesthetists in Oxford · All nurse anesthetists in Mississippi