ZACHARY P ALLEGRETTI MD
NPI 1952807554
Family Medicine in Lake Geneva, WI
About Zachary P Allegretti Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ZACHARY P ALLEGRETTI MD (NPI 1952807554) is an individual family medicine provider in Lake Geneva, Wisconsin, licensed in Wisconsin (75016) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with Aurora Memorial Hospital Burlington, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
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
Zachary P Allegretti Md 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 Zachary Allegretti reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
West Allis, WI 53227
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 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 10
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.
Aurora Memorial Hospital Burlington
Acute Care Hospitals · Burlington, WIAurora Lakeland Medical Center
Acute Care Hospitals · Elkhorn, WIAurora St Lukes Medical Center
Acute Care Hospitals · Milwaukee, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53147 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
LAKE GENEVA, WI 53147
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 Zachary Allegretti's NPI number?
The NPI number for Zachary Allegretti is 1952807554. It was assigned to this individual provider in the NPPES registry on April 3, 2018.
Where is Zachary Allegretti located?
Zachary Allegretti practices at 146 E Geneva Sq, Lake Geneva, WI 53147. The listed phone number is (262) 249-5000.
What is Zachary Allegretti's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Zachary Allegretti enrolled in Medicare?
Yes. Zachary Allegretti 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 Zachary Allegretti's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Zachary Allegretti reassigns Medicare benefits to Aurora Medical Group, Inc. (West Allis, 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 Zachary Allegretti's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Zachary Allegretti accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Molina Healthcare and 3 other insurers list Zachary Allegretti 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 Zachary Allegretti affiliated with any hospitals?
According to CMS data, Zachary Allegretti is affiliated with Aurora Memorial Hospital Burlington, Aurora Lakeland Medical Center and Aurora St Lukes Medical Center.
When was this NPI record last updated?
The NPPES record for Zachary Allegretti was last updated on November 18, 2021. 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.