Shannon Marie Oyster, CRNA
NPI 1023593787ActiveIndividual· Nurse Anesthetist, Certified Registered· Mansfield, OH
Nurse Anesthetist, Certified Registered (CRNA) with Anesthesia Associates of Mansfield, Inc, practicing in Mansfield, Ohio. Medicare paid $36,710 for services to 224 patients in 2024. Merck Sharp & Dohme LLC reported $19.92 in payments in 2025, mostly food and beverage. Lists Ohiohealth Mansfield Hospital as a hospital affiliation.
Overview
| NPI | 1023593787 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNA |
| Sole proprietor | Yes |
| NPI issued | Sep 28, 2018 |
| Last updated in NPPES | Jan 15, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Anesthetist, Certified Registered Primary | 367500000X | APRN.CRNA.019771 | OH |
| Registered Nurse | 163W00000X | RN.344943 | OH |
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) (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 224 |
|---|---|
| Services billed | 228 across 46 procedure codes |
| Paid by Medicare | $36,710 |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Certified Registered Nurse Anesthetist (Crna) |
Medical group
- Anesthesia Associates of Mansfield, IncMansfield, OH · 26 clinicians
Hospital affiliation
- Ohiohealth Mansfield HospitalMansfield, OH
Industry payments (Open Payments)
- 2025$19.92 · 1 payment from 1 company
- 2024$14.50 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $19.92 | 1 |
What the 2025 payments were for
- Food and Beverage$19.92 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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