KOBY J BUTH MD
NPI 1992492292
Family Medicine in Fremont, MI
About Koby J Buth Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KOBY J BUTH MD (NPI 1992492292) is an individual family medicine provider in Fremont, Michigan, licensed in Michigan (4351050718) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, is affiliated with Mercy Health Saint Mary's, and is a graduate of Western Michigan Un Homer Stryker School Of Med (2023).
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)
Koby J Buth Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Koby Buth reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fremont, MI 49412
- Reassigned Medicare billing, Michigan enrollment
- 180 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.
Mercy Health Saint Mary's
Acute Care Hospitals · Grand Rapids, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49412 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 Koby Buth's NPI number?
The NPI number for Koby Buth is 1992492292. It was assigned to this individual provider in the NPPES registry on April 18, 2023.
Where is Koby Buth located?
Koby Buth practices at 230 W Oak St, Fremont, MI 49412. The listed phone number is (231) 924-4200.
What is Koby Buth's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Koby Buth enrolled in Medicare?
Yes. Koby Buth is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Koby Buth's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Koby Buth reassigns Medicare benefits to Newaygo County General Hospital Association (Fremont, 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 Koby Buth's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Koby Buth 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 list Koby Buth 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 Koby Buth affiliated with any hospitals?
According to CMS data, Koby Buth is affiliated with Mercy Health Saint Mary's.
When was this NPI record last updated?
The NPPES record for Koby Buth was last updated on August 17, 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.
# Koby J Buth, MD · NPI 1992492292
Family Medicine physician in Fremont, Michigan. Individual provider, active in the CMS NPPES registry since April 18, 2023.
## Identity
- **NPI:** 1992492292 (Entity type: Individual)
- **Enumerated:** April 18, 2023
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 4351050718 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 230 W OAK ST, Fremont, MI 49412-1526
- **Phone:** (231) 924-4200
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Newaygo County General Hospital Association (NPI 1609009554, Fremont, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Western Michigan Un Homer Stryker School Of Med, class of 2023
## Record status
- **NPPES last updated:** August 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1992492292) · Data from the CMS NPPES public registry.