DR. MICHAEL G ZAHN MD
NPI 1437118247
Orthopaedic Surgery in Hamilton, NY
About Dr. Michael G Zahn Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL G ZAHN MD (NPI 1437118247) is an individual orthopaedic surgery provider in Hamilton, New York, licensed in New York (162051) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Chenango Memorial Hospital, and is a graduate of Stanford University School Of Medicine (1980).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Michael G Zahn Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Michael Zahn reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hamilton, NY 13346
- Reassigned Medicare billing, New York enrollment
- 10 clinicians in this Medicare group
Alexandria Bay, NY 13607
- Reassigned Medicare billing, New York enrollment
- 89 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 13
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Chenango Memorial Hospital
Acute Care Hospitals · Norwich, NYOneida Health Hospital
Acute Care Hospitals · Oneida, NYCommunity Memorial Hospital, Inc
Critical Access Hospitals · Hamilton, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 13346 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
HAMILTON, NY 13346
HAMILTON, NY 13346
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 Michael Zahn's NPI number?
The NPI number for Michael Zahn is 1437118247. It was assigned to this individual provider in the NPPES registry on March 21, 2006.
Where is Michael Zahn located?
Michael Zahn practices at 85 College St, Hamilton, NY 13346. The listed phone number is (315) 824-1250.
What is Michael Zahn's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Michael Zahn enrolled in Medicare?
Yes. Michael Zahn is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Michael Zahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Zahn reassigns Medicare benefits to 2 organizations: College St Orthopedics (Hamilton, NY) and River Hospital, Inc. (Alexandria Bay, NY). 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 Michael Zahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Zahn affiliated with any hospitals?
According to CMS data, Michael Zahn is affiliated with Chenango Memorial Hospital, Oneida Health Hospital and Community Memorial Hospital, Inc.
When was this NPI record last updated?
The NPPES record for Michael Zahn was last updated on October 18, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.