KATHERINE WILLIAMS LPC-MH SUPERVISEE
NPI 1336685122
Counselor - Mental Health in Sioux Falls, SD
About Katherine Williams Lpc-mh Supervisee NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE WILLIAMS LPC-MH SUPERVISEE (NPI 1336685122) is an individual mental health provider in Sioux Falls, South Dakota, licensed in South Dakota (30773) and active in the NPI registry since January 2017. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 3
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)
Katherine Williams Lpc-mh Supervisee is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Katherine Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sioux Falls, SD 57108
- Reassigned Medicare billing, South Dakota enrollment
- 1,277 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.
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 Katherine Williams's NPI number?
The NPI number for Katherine Williams is 1336685122. It was assigned to this individual provider in the NPPES registry on January 17, 2017.
Where is Katherine Williams located?
Katherine Williams practices at 6201 W 43rd St, Sioux Falls, SD 57106. The listed phone number is (605) 774-1243.
What is Katherine Williams's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.
Is Katherine Williams enrolled in Medicare?
Yes. Katherine Williams is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Katherine Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Williams reassigns Medicare benefits to Avera Mckennan (Sioux Falls, SD). The 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 Katherine Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Katherine Williams accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Sunflower Health Plan and Avera Health Plans list Katherine 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 Katherine Williams was last updated on September 12, 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.
# Katherine Williams, LPC-MH SUPERVISEE · NPI 1336685122
Mental Health provider in Sioux Falls, South Dakota. Individual provider, active in the CMS NPPES registry since January 17, 2017.
## Identity
- **NPI:** 1336685122 (Entity type: Individual)
- **Enumerated:** January 17, 2017
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **State license:** 30773 (South Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 6201 W 43RD ST, Sioux Falls, SD 57106-1265
- **Phone:** (605) 774-1243
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Avera Mckennan (NPI 1013350891, Sioux Falls, SD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 12, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1336685122) · Data from the CMS NPPES public registry.