DR. MARK WILLIAM WIRTZ
NPI 1063772275
Family Medicine in Verona, WI
About Dr. Mark William Wirtz NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK WILLIAM WIRTZ (NPI 1063772275) is an individual family medicine provider in Verona, Wisconsin, licensed in Wisconsin (71092-20) and active in the NPI registry since May 2012. He is enrolled in Medicare PECOS, is affiliated with Unitypoint Health - Meriter, and is a graduate of Northwestern University Feinberg Medical School (2012).
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 and accepts Medicare assignment
Dr. Mark William Wirtz 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 Mark Wirtz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 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 11
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.
Unitypoint Health - Meriter
Acute Care Hospitals · Madison, WIUniversity Of Wi Hospitals & Clinics Authority
Acute Care Hospitals · Madison, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53593 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 2
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.
VERONA, WI 53593
VERONA, WI 53593
VERONA, WI 53593
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 Mark Wirtz's NPI number?
The NPI number for Mark Wirtz is 1063772275. It was assigned to this individual provider in the NPPES registry on May 22, 2012.
Where is Mark Wirtz located?
Mark Wirtz practices at 100 N Nine Mound Rd, Verona, WI 53593. The listed phone number is (608) 845-9531.
What is Mark Wirtz's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mark Wirtz enrolled in Medicare?
Yes. Mark Wirtz 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 Mark Wirtz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Wirtz reassigns Medicare benefits to University Of Wisconsin Medical Foundation, Inc (Middleton, 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 Mark Wirtz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Wirtz accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Anthem Blue Cross and Blue Shield, Aspirus Health Plan and Dean Health Plan and 4 other insurers list Mark Wirtz 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 Mark Wirtz affiliated with any hospitals?
According to CMS data, Mark Wirtz is affiliated with Unitypoint Health - Meriter and University Of Wi Hospitals & Clinics Authority.
When was this NPI record last updated?
The NPPES record for Mark Wirtz was last updated on January 19, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Mark William Wirtz · NPI 1063772275
Family Medicine physician in Verona, Wisconsin. Individual provider, active in the CMS NPPES registry since May 22, 2012.
## Identity
- **NPI:** 1063772275 (Entity type: Individual)
- **Enumerated:** May 22, 2012
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 71092-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 N NINE MOUND RD, Verona, WI 53593-1032
- **Phone:** (608) 845-9531
## 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:** University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 2012
## Record status
- **NPPES last updated:** January 19, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1063772275) · Data from the CMS NPPES public registry.