NORTHWESTERN SERVICES, LLC
NPI 1083883649
Anesthesiology in Farmington Hills, MI
About Northwestern Services, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NORTHWESTERN SERVICES, LLC (NPI 1083883649) is a healthcare organization registered as an anesthesiology in Farmington Hills, Michigan and active in the NPI registry since February 2008. The organization lists Cristin Trahey, Administrator, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Northwestern Services, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
199Medicare enrollment records show 199 clinicians reassign Medicare billing to Northwestern Services, LLC, which bills Medicare for the services they deliver. Of these, 82 practice within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 3
Nearest to this location (20)
See all 199Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Northwestern Services, LLC's NPI number?
The NPI number for Northwestern Services, LLC is 1083883649. It was assigned to this organization in the NPPES registry on February 27, 2008.
Where is Northwestern Services, LLC located?
Northwestern Services, LLC is located at 30055 Northwestern Hwy Suite L60, Farmington Hills, MI 48334. The listed phone number is (248) 865-6555.
What is Northwestern Services, LLC's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Northwestern Services, LLC enrolled in Medicare?
Yes. Northwestern Services, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Northwestern Services, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 199 clinicians in 3 Medicare specialties reassign their Medicare billing to Northwestern Services, LLC. A 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 the clinician's services. The largest specialties are Certified Registered Nurse Anesthetist (CRNA) (161), Anesthesiology (37) and Interventional Pain Management (1). Of these, 82 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Northwestern Services, LLC accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Northwestern Services, LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Northwestern Services, LLC was last updated on November 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.
# Northwestern Services, Llc · NPI 1083883649
Anesthesiology organization in Farmington Hills, Michigan. Organization record, active in the CMS NPPES registry since February 27, 2008.
## Identity
- **NPI:** 1083883649 (Entity type: Organization)
- **Enumerated:** February 27, 2008
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **Organization subpart:** No
- **Authorized official:** Cristin Trahey, ADMINISTRATOR
## Practice location
- **Address:** 30055 NORTHWESTERN HWY, SUITE L60, Farmington Hills, MI 48334-3230
- **Phone:** (248) 865-6555
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 199 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Certified Registered Nurse Anesthetist (CRNA) (161), Anesthesiology (37), Interventional Pain Management (1); 82 practice within 10 miles; [full list](https://npiprofile.com/npi/1083883649/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 4, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1083883649) · Data from the CMS NPPES public registry.