CHRISTINA ANNE O'BRIEN M.S., CRNA
NPI 1053827709
Nurse Anesthetist, Certified Registered in Southfield, MI
About Christina Anne O'brien M.s., Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTINA ANNE O'BRIEN M.S., CRNA (NPI 1053827709) is an individual nurse anesthetist, certified registered in Southfield, Michigan, licensed in Michigan (4704281531) and active in the NPI registry since December 2017. She is affiliated with Trinity Health Oakland Hospital and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Christina Anne O'brien M.s., Crna is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Christina O'brien reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Farmington Hills, MI 48334
- Reassigned Medicare billing, Michigan enrollment
- 199 clinicians in this Medicare group
Westland, MI 48186
- Reassigned Medicare billing, Michigan enrollment
- 273 clinicians in this Medicare group
Rochester Hills, MI 48307
- Reassigned Medicare billing, Michigan enrollment
- 100 clinicians in this Medicare group
Saint Clair Shores, MI 48081
- Reassigned Medicare billing, Michigan enrollment
- 99 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Trinity Health Oakland Hospital
Acute Care Hospitals · Pontiac, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48075 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SOUTHFIELD, MI 48075
SOUTHFIELD, MI 48075
SOUTHFIELD, MI 48075
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Christina O'brien's NPI number?
The NPI number for Christina O'brien is 1053827709. It was assigned to this individual provider in the NPPES registry on December 18, 2017.
Where is Christina O'brien located?
Christina O'brien practices at 16001 W 9 Mile Rd, Southfield, MI 48075. The listed phone number is (248) 849-3000.
What is Christina O'brien's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Christina O'brien enrolled in Medicare?
Yes. Christina O'brien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Christina O'brien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christina O'brien reassigns Medicare benefits to 4 organizations: Northwestern Services, LLC (Farmington Hills, MI), Anesthesia Associates Of Ann Arbor, PLLC (Westland, MI), Eastern District Anesthesiology PLLC (Rochester Hills, MI) and Eastside Group LLC (Saint Clair Shores, MI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Christina O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Christina O'brien affiliated with any hospitals?
According to CMS data, Christina O'brien is affiliated with Trinity Health Oakland Hospital.
When was this NPI record last updated?
The NPPES record for Christina O'brien was last updated on January 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Christina Anne O'brien, M.S., CRNA · NPI 1053827709
Nurse Anesthetist, Certified Registered physician in Southfield, Michigan. Individual provider, active in the CMS NPPES registry since December 18, 2017.
## Identity
- **NPI:** 1053827709 (Entity type: Individual)
- **Enumerated:** December 18, 2017
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 4704281531 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 16001 W 9 MILE RD, Southfield, MI 48075-4818
- **Phone:** (248) 849-3000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Northwestern Services, LLC (NPI 1083883649, Farmington Hills, MI); Anesthesia Associates Of Ann Arbor, PLLC (NPI 1669581997, Westland, MI); Eastern District Anesthesiology PLLC (NPI 1396397741, Rochester Hills, MI); Eastside Group LLC (NPI 1235365289, Saint Clair Shores, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** January 3, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1053827709) · Data from the CMS NPPES public registry.