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KATHY JO WILLIAMS MD
NPI 1083714240
Family Medicine in Madison, WI

Active since September 25, 2006PECOS Enrolled
5315 WALL ST STE 260, MADISON, WI 53718(608) 807-1600(608) 467-1425 Get Directions Write a Review

NPPES record last updated: May 8, 2015. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Kathy Jo Williams Md NPPES

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

KATHY JO WILLIAMS MD (NPI 1083714240) is an individual family medicine provider in Madison, Wisconsin, licensed in Wisconsin (44105) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1083714240
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameKATHY JO WILLIAMSCredential: MD
Location Address5315 WALL ST STE 260Madison, WI 53718-7937
Mailing AddressPo Box 1239Troy, MI 48099-1239
Phone(608) 807-1600
Fax(608) 467-1425
Sole ProprietorNo
Enumeration DateSeptember 25, 2006
Last NPPES UpdateMay 8, 2015
✔ NPI 1083714240 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in WI · 44105
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.
Also ListedFamily Medicine · Hospice and Palliative MedicineTaxonomy 207QH0002X · License 44105 (WI)
5315 WALL ST STE 260, Madison, WI 53718
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Other Identifiers 1

Medicaid34272200WI

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kathy Jo Williams 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 Kathy Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Iah Of Wisconsin, PLLC
61 mi
Family Medicine
13555 BISHOPS CT STE 315
Brookfield, WI 53005
  • Reassigned Medicare billing, Wisconsin enrollment
  • 22 clinicians in this Medicare group
NPI 1861898090 (248) 824-6000
Vpa PC
61 mi
Family Medicine
13555 BISHOPS CT STE 315
Brookfield, WI 53005
  • Reassigned Medicare billing, Wisconsin enrollment
  • 53 clinicians in this Medicare group
NPI 1659484657 (414) 255-0300

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 53718 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 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CAROL M HAMUS NP
Nurse Practitioner
5315 WALL ST STE 260
MADISON, WI 53718
Dane County (608) 807-1600
SARAH RUTH RUSTAD M.D.
Family Medicine
5315 WALL ST STE 260
MADISON, WI 53718
Dane County (608) 807-1600
JESSICA LYNN KELDERMAN M.D.
General Practice
5315 WALL ST STE 260
MADISON, WI 53718
Dane County (608) 807-1600

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 Kathy Williams's NPI number?

The NPI number for Kathy Williams is 1083714240. It was assigned to this individual provider in the NPPES registry on September 25, 2006.

Where is Kathy Williams located?

Kathy Williams practices at 5315 Wall St Ste 260, Madison, WI 53718. The listed phone number is (608) 807-1600.

What is Kathy Williams's specialty?

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

Is Kathy Williams enrolled in Medicare?

Yes. Kathy Williams is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kathy Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathy Williams reassigns Medicare benefits to 2 organizations: Iah Of Wisconsin, PLLC (Brookfield, WI) and Vpa PC (Brookfield, 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 Kathy Williams'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 Kathy Williams was last updated on May 8, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.