MADISON CHRISTINE GERISH D.O.
NPI 1033835434
Family Medicine in Saint Clair Shores, MI
About Madison Christine Gerish D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MADISON CHRISTINE GERISH D.O. (NPI 1033835434) is an individual family medicine provider in Saint Clair Shores, Michigan, licensed in Michigan (5101028334) and active in the NPI registry since October 2022. She is enrolled in Medicare PECOS, is affiliated with Ascension St John Hospital, and is a graduate of Michigan State University College Of Osteopathic Medicine (2022).
NPPES Registry Identity
Specialties & Licenses
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
Madison Christine Gerish D.o. 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 Madison Gerish reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Clinton Township, MI 48038
- Reassigned Medicare billing, Michigan enrollment
- 87 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.
Ascension St John Hospital
Acute Care Hospitals · Detroit, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48080 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Madison Gerish's NPI number?
The NPI number for Madison Gerish is 1033835434. It was assigned to this individual provider in the NPPES registry on October 17, 2022.
Where is Madison Gerish located?
Madison Gerish practices at 20225 E 9 Mile Rd Ste A, Saint Clair Shores, MI 48080. The listed phone number is (586) 779-8700.
What is Madison Gerish's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Madison Gerish enrolled in Medicare?
Yes. Madison Gerish 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 Madison Gerish's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Madison Gerish reassigns Medicare benefits to Henry Ford Cornerstone Medical Group (Clinton Township, 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 Madison Gerish's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Madison Gerish accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Madison Gerish 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 Madison Gerish affiliated with any hospitals?
According to CMS data, Madison Gerish is affiliated with Ascension St John Hospital.
When was this NPI record last updated?
The NPPES record for Madison Gerish was last updated on January 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Madison Christine Gerish, D.O. · NPI 1033835434
Family Medicine physician in Saint Clair Shores, Michigan. Individual provider, active in the CMS NPPES registry since October 17, 2022.
## Identity
- **NPI:** 1033835434 (Entity type: Individual)
- **Enumerated:** October 17, 2022
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 5101028334 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 20225 E 9 MILE RD STE A, Saint Clair Shores, MI 48080-1700
- **Phone:** (586) 779-8700 · **Fax:** (586) 498-1425
## 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:** Henry Ford Cornerstone Medical Group (NPI 1851765374, Clinton Township, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Michigan State University College Of Osteopathic Medicine, class of 2022
## Record status
- **NPPES last updated:** January 8, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1033835434) · Data from the CMS NPPES public registry.