CATHERINE I GILES CNP
NPI 1710533799
Nurse Practitioner in Ypsilanti, MI
About Catherine I Giles Cnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE I GILES CNP (NPI 1710533799) is an individual nurse practitioner in Ypsilanti, Michigan, licensed in Michigan (4704305431) and active in the NPI registry since August 2019. She is enrolled in Medicare PECOS, is affiliated with St Joe Mercy Hospital System Livonia, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
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
Catherine I Giles Cnp 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
2Medicare enrollment records show Catherine Giles reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ypsilanti, MI 48197
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Iha Health Services Corporation
- 1,480 clinicians in this Medicare group
Ann Arbor, MI 48105
- Reassigned Medicare billing, Michigan enrollment
- 507 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 4
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Joe Mercy Hospital System Livonia
Acute Care Hospitals · Livonia, MIUniversity Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MISaint Joseph Mercy Livingston Hospital
Acute Care Hospitals · Howell, MITrinity Health Ann Arbor Hospital
Acute Care Hospitals · Ann Arbor, MIChelsea Hospital
Acute Care Hospitals · Chelsea, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48197 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
YPSILANTI, MI 48197
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 Catherine Giles's NPI number?
The NPI number for Catherine Giles is 1710533799. It was assigned to this individual provider in the NPPES registry on August 14, 2019. The provider is also known as Catie Giles.
Where is Catherine Giles located?
Catherine Giles practices at 5325 Elliott Dr. 2nd Floor, Ypsilanti, MI 48197. The listed phone number is (734) 714-8000.
What is Catherine Giles's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Catherine Giles enrolled in Medicare?
Yes. Catherine Giles 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 Catherine Giles's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Giles reassigns Medicare benefits to 2 organizations: Iha Health Services Organization (Ypsilanti, MI) and The Regents Of The University Of Michigan (Ann Arbor, 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 Catherine Giles's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Catherine Giles 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 Catherine Giles 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.
Is Catherine Giles affiliated with any hospitals?
According to CMS data, Catherine Giles is affiliated with St Joe Mercy Hospital System Livonia, University Of Michigan Health System, Saint Joseph Mercy Livingston Hospital, Trinity Health Ann Arbor Hospital and Chelsea Hospital.
When was this NPI record last updated?
The NPPES record for Catherine Giles was last updated on March 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Catherine I Giles, CNP · NPI 1710533799
Nurse Practitioner physician in Ypsilanti, Michigan. Individual provider, active in the CMS NPPES registry since August 14, 2019.
## Identity
- **NPI:** 1710533799 (Entity type: Individual)
- **Enumerated:** August 14, 2019
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 4704305431 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 5325 ELLIOTT DR., 2ND FLOOR, Ypsilanti, MI 48197
- **Phone:** (734) 714-8000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Iha Health Services Organization (NPI 1487072633, Ypsilanti, MI); The Regents Of The University Of Michigan (NPI 1811144496, Ann Arbor, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** March 18, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1710533799) · Data from the CMS NPPES public registry.