CATHERINE ELIZABETH KEEGAN MD, PHD
NPI 1144230764
Medical Genetics - Clinical Genetics (M.D.) in Ann Arbor, MI
About Catherine Elizabeth Keegan Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE ELIZABETH KEEGAN MD, PHD (NPI 1144230764) is an individual clinical genetics (m.d.) provider in Ann Arbor, Michigan, licensed in Michigan (4301073646) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and is a graduate of Other (1996).
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
Catherine Elizabeth Keegan Md, Phd 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 Keegan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 2,377 clinicians in this Medicare group
Mason, MI 48854
- Reassigned Medicare billing, Michigan enrollment
- 916 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MIOther 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 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
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 Keegan's NPI number?
The NPI number for Catherine Keegan is 1144230764. It was assigned to this individual provider in the NPPES registry on August 8, 2006.
Where is Catherine Keegan located?
Catherine Keegan practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.
What is Catherine Keegan's specialty?
The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Genetics (M.D.), with taxonomy code 207SG0201X.
Is Catherine Keegan enrolled in Medicare?
Yes. Catherine Keegan 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 Keegan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Keegan reassigns Medicare benefits to 2 organizations: Regents Of The University Of Michigan (Ann Arbor, MI) and Edward W. Sparrow Hospital Association (Mason, 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 Keegan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Catherine Keegan accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Catherine Keegan 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 Keegan affiliated with any hospitals?
According to CMS data, Catherine Keegan is affiliated with University Of Michigan Health System.
When was this NPI record last updated?
The NPPES record for Catherine Keegan was last updated on May 10, 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.
# Catherine Elizabeth Keegan, MD, PHD · NPI 1144230764
Clinical Genetics (M.D.) physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since August 8, 2006.
## Identity
- **NPI:** 1144230764 (Entity type: Individual)
- **Enumerated:** August 8, 2006
- **Primary specialty:** Medical Genetics - Clinical Genetics (M.D.) · taxonomy 207SG0201X
- **State license:** 4301073646 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109-5000
- **Phone:** (734) 936-4000
## 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): Regents Of The University Of Michigan (NPI 1003848144, Ann Arbor, MI); Edward W. Sparrow Hospital Association (NPI 1689683641, Mason, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1996
## Record status
- **NPPES last updated:** May 10, 2019
- **Other identifiers:** Medicaid 4417204 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1144230764) · Data from the CMS NPPES public registry.