MARK RICHARD WITTCHOW DMD
NPI 1083175087
Dentist - Orthodontics and Dentofacial Orthopedics in La Crosse, WI

Active since March 31, 2019PECOS Enrolled
1836 SOUTH AVE, LA CROSSE, WI 54601(608) 782-7300 Get Directions Write a Review

NPPES record last updated: September 15, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 24, 2023, Jul 13, 2019 (2 updates tracked since 2019).

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

NPI1083175087
Entity TypeIndividualMale
Primary Taxonomy1223X0400X
Provider Legal NameMARK RICHARD WITTCHOWCredential: DMD
Location Address1836 SOUTH AVELa Crosse, WI 54601-5429
Mailing Address1836 South AveLa Crosse, WI 54601-5429 · (608) 782-7300
Sole ProprietorNo
Enumeration DateMarch 31, 2019
Last NPPES UpdateSeptember 15, 20232 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2023
✔ NPI 1083175087 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Orthodontics and Dentofacial OrthopedicsDental Providers
Taxonomy Code1223X0400X
Licenses✔ Licensed in WI · 6001325✔ Licensed in IA · DDS-09955
Definition
That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures.
1836 SOUTH AVE, La Crosse, WI 54601

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).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare 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.

Clinic/Center
1836 SOUTH AVE
La Crosse, WI 54601
  • Reassigned Medicare billing, Wisconsin enrollment
  • 928 clinicians in this Medicare group
Clinic/Center
710 DENTON ST
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.

New Patient
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Anesthesiology
1836 SOUTH AVE, GUNDERSEN CLINIC, LTD.
LA CROSSE, WI 54601
Nurse Anesthetist, Certified Registered
1836 SOUTH AVE
LA CROSSE, WI 54601
Psychologist
1836 SOUTH AVE
LA CROSSE, WI 54601
Surgery
1836 SOUTH AVE
LA CROSSE, WI 54601
Nurse Practitioner (Adult Health)
1836 SOUTH AVE
LA CROSSE, WI 54601
Orthopaedic Surgery
1836 SOUTH AVE
LA CROSSE, WI 54601
Registered Nurse (Addiction (Substance Use Disorder))
1836 SOUTH AVE
LA CROSSE, WI 54601
Nurse Practitioner (Family)
1836 SOUTH AVE
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.