Kathleen O'Sullivan Niles, CRNA
NPI 1528259389ActiveIndividual· Nurse Anesthetist, Certified Registered· Olympia Fields, IL
Nurse Anesthetist, Certified Registered (CRNA) with North American Partners in Anesthesia Illinois LLC and 1 other group, practicing in Olympia Fields, Illinois. Medicare paid $8,562 for services to 118 patients in 2024. Merck Sharp & Dohme LLC was the largest of 2 companies reporting payments in 2025, $52.47 in all, mostly food and beverage. Lists Saint Joseph Medical Center as a hospital affiliation.
Overview
| NPI | 1528259389 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNA |
| Sole proprietor | No |
| NPI issued | Aug 7, 2007 |
| Last updated in NPPES | Aug 7, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Anesthetist, Certified Registered Primary | 367500000X | — | IL |
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) (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 118 |
|---|---|
| Services billed | 122 across 35 procedure codes |
| Paid by Medicare | $8,562 |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Certified Registered Nurse Anesthetist (Crna) |
Medical groups
- North American Partners in Anesthesia Illinois LLCBerwyn, IL · 431 clinicians
- American Anesthesiology Associates of Illinois, S.C.Elgin, IL · 40 clinicians
Hospital affiliation
- Saint Joseph Medical CenterJoliet, IL
Industry payments (Open Payments)
- 2025$52.47 · 2 payments from 2 companies
- 2024$64.12 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $33.32 | 1 |
| Vertex Pharmaceuticals Incorporated | $19.15 | 1 |
What the 2025 payments were for
- Food and Beverage$52.47 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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