MARK RICHARD WITTCHOW DMD
NPI 1083175087
Dentist - Orthodontics and Dentofacial Orthopedics in La Crosse, WI
About Mark Richard Wittchow Dmd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK RICHARD WITTCHOW DMD (NPI 1083175087) is an individual orthodontics and dentofacial orthopedics provider in La Crosse, Wisconsin, licensed in Wisconsin (6001325) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.
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 (PECOS)
Mark Richard Wittchow Dmd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mark Wittchow reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 928 clinicians in this Medicare group
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 1,457 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54601 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
LA CROSSE, WI 54601
LA CROSSE, WI 54601
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 Wittchow's NPI number?
The NPI number for Mark Wittchow is 1083175087. It was assigned to this individual provider in the NPPES registry on March 31, 2019.
Where is Mark Wittchow located?
Mark Wittchow practices at 1836 South Ave, La Crosse, WI 54601. The listed phone number is (608) 782-7300.
What is Mark Wittchow's specialty?
The primary specialty registered for this NPI is Dentist, specializing in Orthodontics and Dentofacial Orthopedics, with taxonomy code 1223X0400X.
Is Mark Wittchow enrolled in Medicare?
Yes. Mark Wittchow is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Wittchow's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Wittchow reassigns Medicare benefits to 2 organizations: Gundersen Clinic Ltd (La Crosse, WI) and Gundersen Lutheran Medical Center, Inc (La Crosse, WI). 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 Mark Wittchow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Wittchow accept?
Health plans from Aspirus Health Plan, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Delta Dental of Wisconsin, Inc. list Mark Wittchow 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.
When was this NPI record last updated?
The NPPES record for Mark Wittchow was last updated on September 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.