Christina Anne O'Brien, M.S., CRNA
NPI 1053827709ActiveIndividual· Nurse Anesthetist, Certified Registered· Southfield, MI
Nurse Anesthetist, Certified Registered (M.S., CRNA) with Anesthesia Associates of Ann Arbor PLLC, practicing in Southfield, Michigan. Medicare paid $10,489 for services to 120 patients in 2024. Merck Sharp & Dohme LLC reported $32.51 in payments in 2025, mostly food and beverage. Lists Trinity Health Oakland Hospital as a hospital affiliation.
Overview
| NPI | 1053827709 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.S., CRNA |
| Sole proprietor | No |
| NPI issued | Dec 18, 2017 |
| Last updated in NPPES | Jan 3, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Anesthetist, Certified Registered Primary | 367500000X | 4704281531 | MI |
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) (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 120 |
|---|---|
| Services billed | 125 across 47 procedure codes |
| Paid by Medicare | $10,489 |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Certified Registered Nurse Anesthetist (Crna) |
Medical group
- Anesthesia Associates of Ann Arbor PLLCPontaic, MI · 219 clinicians
Hospital affiliation
- Trinity Health Oakland HospitalPontiac, MI
Industry payments (Open Payments)
- 2025$32.51 · 2 payments from 1 company
- 2024$19.08 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $32.51 | 2 |
What the 2025 payments were for
- Food and Beverage$32.51 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other nurse anesthetists in Southfield
- 1023631702
- 1043703663
- 1073562161
- 1083158620
- 1093172595
- 1124123799
- 1144325192
- 1144468463
- 1205281565
- 1215146428
- 1235814096
- 1306344049
All 119 nurse anesthetists in Southfield · All nurse anesthetists in Michigan