KATIE B WILLIAMS M.D. PH.D.
NPI 1811216716
Medical Genetics - Clinical Genetics (M.D.) in Viroqua, WI
About Katie B Williams M.d. Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATIE B WILLIAMS M.D. PH.D. (NPI 1811216716) is an individual clinical genetics (m.d.) provider in Viroqua, Wisconsin, licensed in Wisconsin (56966-20) and active in the NPI registry since May 2010. She is enrolled in Medicare PECOS and maintains a secondary practice location in Madison.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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)
Katie B Williams M.d. Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Katie Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Viroqua, WI 54665
- Reassigned Medicare billing, Wisconsin enrollment
- 123 clinicians in this Medicare group
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.
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.
VIROQUA, WI 54665
VIROQUA, WI 54665
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 Katie Williams's NPI number?
The NPI number for Katie Williams is 1811216716. It was assigned to this individual provider in the NPPES registry on May 18, 2010.
Where is Katie Williams located?
Katie Williams practices at 507 S Main St, Viroqua, WI 54665. The listed phone number is (608) 637-4202.
What is Katie Williams's specialty?
The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Genetics (M.D.), with taxonomy code 207SG0201X.
Is Katie Williams enrolled in Medicare?
Yes. Katie Williams is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Katie Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katie Williams reassigns Medicare benefits to 2 organizations: Vernon Memorial Healthcare, Inc. (Viroqua, WI) and University Of Wisconsin Medical Foundation, Inc (Middleton, 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 Katie Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Katie Williams accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW, HealthPartners and Quartz and 1 other insurer list Katie Williams 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 Katie Williams was last updated on September 27, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Katie B Williams, M.D. PH.D. · NPI 1811216716
Clinical Genetics (M.D.) physician in Viroqua, Wisconsin. Individual provider, active in the CMS NPPES registry since May 18, 2010.
## Identity
- **NPI:** 1811216716 (Entity type: Individual)
- **Enumerated:** May 18, 2010
- **Primary specialty:** Medical Genetics - Clinical Genetics (M.D.) · taxonomy 207SG0201X
- **State license:** 56966-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 507 S MAIN ST, Viroqua, WI 54665-2059
- **Phone:** (608) 637-4202
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Vernon Memorial Healthcare, Inc. (NPI 1497750921, Viroqua, WI); University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 27, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1811216716) · Data from the CMS NPPES public registry.