DR. MARISSA ANN FROSHEISER DMD
NPI 1861239303
Dentist - General Practice in Bay City, MI
About Dr. Marissa Ann Frosheiser Dmd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARISSA ANN FROSHEISER DMD (NPI 1861239303) is an individual general practice provider in Bay City, Michigan, licensed in Michigan (2901602215) and active in the NPI registry since July 2024. She is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Marissa Ann Frosheiser Dmd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Marissa Frosheiser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saginaw, MI 48607
- Reassigned Medicare billing, Michigan enrollment
- 229 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48706 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Marissa Frosheiser's NPI number?
The NPI number for Marissa Frosheiser is 1861239303. It was assigned to this individual provider in the NPPES registry on July 11, 2024.
Where is Marissa Frosheiser located?
Marissa Frosheiser practices at 3884 Monitor Rd, Bay City, MI 48706. The listed phone number is (989) 671-2000.
What is Marissa Frosheiser's specialty?
The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.
Is Marissa Frosheiser enrolled in Medicare?
Yes. Marissa Frosheiser is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Marissa Frosheiser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Frosheiser reassigns Medicare benefits to Great Lakes Bay Health Centers (Saginaw, 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 Marissa Frosheiser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marissa Frosheiser accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, BEST Life and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 10 other insurers list Marissa Frosheiser 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 Marissa Frosheiser was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Marissa Ann Frosheiser, DMD · NPI 1861239303
General Practice provider in Bay City, Michigan. Individual provider, active in the CMS NPPES registry since July 11, 2024.
## Identity
- **NPI:** 1861239303 (Entity type: Individual)
- **Enumerated:** July 11, 2024
- **Primary specialty:** Dentist - General Practice · taxonomy 1223G0001X
- **State license:** 2901602215 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 3884 MONITOR RD, Bay City, MI 48706-9298
- **Phone:** (989) 671-2000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Great Lakes Bay Health Centers (NPI 1629171707, Saginaw, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 31, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1861239303) · Data from the CMS NPPES public registry.