MR. STEPHEN J. FEZER III CRNA
NPI 1639161656
Nurse Anesthetist, Certified Registered in Buffalo, NY
About Mr. Stephen J. Fezer Iii Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. STEPHEN J. FEZER III CRNA (NPI 1639161656) is an individual nurse anesthetist, certified registered in Buffalo, New York, licensed in New York (352637) and active in the NPI registry since August 2005. He is affiliated with St Joseph's Hospital Health Center and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
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
Mr. Stephen J. Fezer Iii Crna 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
5Medicare enrollment records show Stephen Fezer reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lockport, NY 14094
- Reassigned Medicare billing, New York enrollment
- 29 clinicians in this Medicare group
Warsaw, NY 14569
- Reassigned Medicare billing, New York enrollment
- 25 clinicians in this Medicare group
Oswego, NY 13126
- Reassigned Medicare billing, New York enrollment
- 122 clinicians in this Medicare group
Liverpool, NY 13088
- Reassigned Medicare billing, New York enrollment
- 50 clinicians in this Medicare group
Troy, NY 12180
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: St Joseph's Physician Health PC
- 304 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Joseph's Hospital Health Center
Acute Care Hospitals · Syracuse, NYErie County Medical Center
Acute Care Hospitals · Buffalo, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14215 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.
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.
BUFFALO, NY 14215
BUFFALO, NY 14215
BUFFALO, NY 14215
BUFFALO, NY 14215
BUFFALO, NY 14215
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 Stephen Fezer's NPI number?
The NPI number for Stephen Fezer is 1639161656. It was assigned to this individual provider in the NPPES registry on August 16, 2005.
Where is Stephen Fezer located?
Stephen Fezer practices at 462 Grider St, Buffalo, NY 14215. The listed phone number is (716) 898-3436.
What is Stephen Fezer's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Stephen Fezer enrolled in Medicare?
Yes. Stephen Fezer 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 Stephen Fezer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Fezer reassigns Medicare benefits to 5 organizations: Eastern Niagara Medical Group PC (Lockport, NY), Upstate New York Medical Professional Corporation (Warsaw, NY), Oswego Hospital (Oswego, NY), Gastroenterology & Hepatology Of Central New York, PC (Liverpool, NY) and St. Joseph's Physician Health, P.C. (Troy, 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 Stephen Fezer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Stephen Fezer affiliated with any hospitals?
According to CMS data, Stephen Fezer is affiliated with St Joseph's Hospital Health Center and Erie County Medical Center.
When was this NPI record last updated?
The NPPES record for Stephen Fezer was last updated on October 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Mr. Stephen J. Fezer III, CRNA · NPI 1639161656
Nurse Anesthetist, Certified Registered physician in Buffalo, New York. Individual provider, active in the CMS NPPES registry since August 16, 2005.
## Identity
- **NPI:** 1639161656 (Entity type: Individual)
- **Enumerated:** August 16, 2005
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 352637 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 462 GRIDER ST, Buffalo, NY 14215-3021
- **Phone:** (716) 898-3436
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Eastern Niagara Medical Group PC (NPI 1902913098, Lockport, NY); Upstate New York Medical Professional Corporation (NPI 1801553128, Warsaw, NY); Oswego Hospital (NPI 1255639043, Oswego, NY); Gastroenterology & Hepatology Of Central New York, PC (NPI 1043202641, Liverpool, NY); St. Joseph's Physician Health, P.C. (NPI 1154376770, Troy, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** October 6, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1639161656) · Data from the CMS NPPES public registry.