DR. WILFRED SZERENYI M.D.
NPI 1043294119
Anesthesiology in Waukesha, WI
About Dr. Wilfred Szerenyi M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILFRED SZERENYI M.D. (NPI 1043294119) is an individual anesthesiology provider in Waukesha, Wisconsin, licensed in Wisconsin (35718-020) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Waukesha Memorial Hospital, and is a graduate of Medical College Of Wisconsin (1993).
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 and accepts Medicare assignment
Dr. Wilfred Szerenyi M.d. 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 Wilfred Szerenyi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Waukesha, WI 53188
- Reassigned Medicare billing, Wisconsin enrollment
- 45 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 3
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Waukesha Memorial Hospital
Acute Care Hospitals · Waukesha, WIOconomowoc Memorial Hospital
Acute Care Hospitals · Oconomowoc, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WAUKESHA, WI 53188
WAUKESHA, WI 53188
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 Wilfred Szerenyi's NPI number?
The NPI number for Wilfred Szerenyi is 1043294119. It was assigned to this individual provider in the NPPES registry on December 2, 2005.
Where is Wilfred Szerenyi located?
Wilfred Szerenyi practices at 725 American Ave, Waukesha, WI 53188. The listed phone number is (262) 544-2011.
What is Wilfred Szerenyi's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Wilfred Szerenyi enrolled in Medicare?
Yes. Wilfred Szerenyi 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 Wilfred Szerenyi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Wilfred Szerenyi reassigns Medicare benefits to Anex, S.C. (Waukesha, WI). 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 Wilfred Szerenyi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Wilfred Szerenyi affiliated with any hospitals?
According to CMS data, Wilfred Szerenyi is affiliated with Waukesha Memorial Hospital and Oconomowoc Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Wilfred Szerenyi was last updated on February 15, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Dr. Wilfred Szerenyi, M.D. · NPI 1043294119
Anesthesiology physician in Waukesha, Wisconsin. Individual provider, active in the CMS NPPES registry since December 2, 2005.
## Identity
- **NPI:** 1043294119 (Entity type: Individual)
- **Enumerated:** December 2, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 35718-020 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 725 AMERICAN AVE, Waukesha, WI 53188-5031
- **Phone:** (262) 544-2011
## 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:** Anex, S.C. (NPI 1578510632, Waukesha, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 1993
## Record status
- **NPPES last updated:** February 15, 2009
- **Other identifiers:** Medicare ID-Type Unspecified 0021-68625 (WI); Medicare UPIN G21961 (WI); Other 050084281; and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1043294119) · Data from the CMS NPPES public registry.