MARY C SPIRES MD
NPI 1740362649
Physical Medicine & Rehabilitation - Spinal Cord Injury Medicine in Ann Arbor, MI
About Mary C Spires Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY C SPIRES MD (NPI 1740362649) is an individual spinal cord injury medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301052841) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of Michigan State University College Of Human Medicine (1988).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Accepted Insurance
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
Mary C Spires Md 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 Reassignment
Medicare enrollment records show Mary Spires reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ann Arbor, MI 48108
- Reassigned Medicare billing, Michigan enrollment
- 2,377 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.
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.
ANN ARBOR, MI 48104
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 Mary Spires's NPI number?
The NPI number for Mary Spires is 1740362649. It was assigned to this individual provider in the NPPES registry on October 19, 2006.
Where is Mary Spires located?
Mary Spires practices at 2850 S Industrial Hwy Suite 400, Ann Arbor, MI 48104. The listed phone number is (734) 973-2400.
What is Mary Spires's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation, specializing in Spinal Cord Injury Medicine, with taxonomy code 2081P0004X.
Is Mary Spires enrolled in Medicare?
Yes. Mary Spires 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 organization bills Medicare for Mary Spires's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Spires reassigns Medicare benefits to Regents Of The University Of Michigan (Ann Arbor, MI). The 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 Mary Spires's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Spires 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 Mary Spires 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 Mary Spires was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Mary C Spires, MD · NPI 1740362649
Spinal Cord Injury Medicine physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since October 19, 2006.
## Identity
- **NPI:** 1740362649 (Entity type: Individual)
- **Enumerated:** October 19, 2006
- **Primary specialty:** Physical Medicine & Rehabilitation - Spinal Cord Injury Medicine · taxonomy 2081P0004X
- **State license:** 4301052841 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 2850 S INDUSTRIAL HWY, SUITE 400, Ann Arbor, MI 48104-5758
- **Phone:** (734) 973-2400
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Regents Of The University Of Michigan (NPI 1770508350, Ann Arbor, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Michigan State University College Of Human Medicine, class of 1988
## Record status
- **NPPES last updated:** July 21, 2022
- **Other identifiers:** Medicaid 2844367 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1740362649) · Data from the CMS NPPES public registry.