1. Home
  2. Directory
  3. Wisconsin
  4. Onalaska
  5. Family Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. CHARLES E CLARK MD
NPI 1689713018
Family Medicine in Onalaska, WI

Active since February 05, 2007PECOS Enrolled
3111 GUNDERSEN DR, ONALASKA, WI 54650(608) 775-8100 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Charles E Clark Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHARLES E CLARK MD (NPI 1689713018) is an individual family medicine provider in Onalaska, Wisconsin, licensed in Wisconsin (51554) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1689713018
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. CHARLES E CLARKCredential: MD
Location Address3111 GUNDERSEN DROnalaska, WI 54650-8447
Mailing Address1836 South AveLa Crosse, WI 54601-5429 · (608) 782-7300
Phone(608) 775-8100
Sole ProprietorNo
Enumeration DateFebruary 5, 2007
Last NPPES UpdateSeptember 29, 2026
✔ NPI 1689713018 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in WI · 51554✔ Licensed in NM · 96180
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
3111 GUNDERSEN DR, Onalaska, WI 54650
Open in Google Maps ↗

Other Names 1

Other Name (5)Dr. Charles E Clark Md

Other Identifiers 1

MedicaidQ4886NM

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Charles E Clark Md 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 Charles Clark reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Gundersen Lutheran Medical Center, Inc
Same address
Clinic/Center
3111 GUNDERSEN DR
Onalaska, WI 54650
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,457 clinicians in this Medicare group
NPI 1225372923 (608) 782-7300
Gundersen Clinic Ltd
3.0 mi
Clinic/Center
1207 MULBERRY LN
La Crosse, WI 54603
  • Reassigned Medicare billing, Wisconsin enrollment
  • 928 clinicians in this Medicare group
NPI 1952915639 (608) 782-7300

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 54650 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
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
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.

RENEE LYNN MONTI ATC
Specialist
3111 GUNDERSEN DR
ONALASKA, WI 54650
La Crosse County (608) 775-8660
MRS. TARA KATHLEEN DEIGMANN NP
Nurse Practitioner (Family)
3111 GUNDERSEN DR
ONALASKA, WI 54650
La Crosse County (608) 775-8100
SCOTT A. BOSSMAN PT
Physical Therapist
3111 GUNDERSEN DR
ONALASKA, WI 54650
La Crosse County (608) 782-7300
DR. NICOLE MICHELLE DOCKENDORFF DPT
Physical Therapist
3111 GUNDERSEN DR
ONALASKA, WI 54650
La Crosse County (608) 775-8100
DEREK JAMES SCHEEVEL DPT
Physical Therapist
3111 GUNDERSEN DR
ONALASKA, WI 54650
La Crosse County (608) 775-8600
MEGAN MARIE MORRIS HOMUTH DPT
Physical Therapist
3111 GUNDERSEN DR
ONALASKA, WI 54650
La Crosse County (608) 775-8100
JENNIFER LEA JOHNSON
Nurse Practitioner (Adult Health)
3111 GUNDERSEN DR
ONALASKA, WI 54650
La Crosse County (608) 775-8100
DEVIN S WENRICH M.D.
Family Medicine
3111 GUNDERSEN DR
ONALASKA, WI 54650
La Crosse County (608) 775-8151

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 Charles Clark's NPI number?

The NPI number for Charles Clark is 1689713018. It was assigned to this individual provider in the NPPES registry on February 5, 2007. The provider is also known as Dr. Charles E Clark MD.

Where is Charles Clark located?

Charles Clark practices at 3111 Gundersen Dr, Onalaska, WI 54650. The listed phone number is (608) 775-8100.

What is Charles Clark's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Charles Clark enrolled in Medicare?

Yes. Charles Clark is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Charles Clark's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charles Clark reassigns Medicare benefits to 2 organizations: Gundersen Lutheran Medical Center, Inc (Onalaska, WI) and Gundersen Clinic Ltd (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 Charles Clark's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Charles Clark was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days 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.