KATELYN L WILLIAMS NP-C
NPI 1639821655
Nurse Practitioner in Visalia, CA
About Katelyn L Williams Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATELYN L WILLIAMS NP-C (NPI 1639821655) is an individual nurse practitioner in Visalia, California, licensed in California (95020121) and active in the NPI registry since January 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses 5
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Katelyn L Williams Np-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Katelyn Williams reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Visalia, CA 93277
- Reassigned Medicare billing, California enrollment
- 2 clinicians in this Medicare group
Fresno, CA 93721
- Reassigned Medicare billing, California enrollment
- 320 clinicians in this Medicare group
Antioch, CA 94509
- Reassigned Medicare billing, California enrollment
- 347 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 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 93277 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
VISALIA, CA 93277
VISALIA, CA 93277
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 Katelyn Williams's NPI number?
The NPI number for Katelyn Williams is 1639821655. It was assigned to this individual provider in the NPPES registry on January 20, 2022.
Where is Katelyn Williams located?
Katelyn Williams practices at 5127 W Noble Ave, Visalia, CA 93277. The listed phone number is (559) 713-6515.
What is Katelyn Williams's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Katelyn Williams enrolled in Medicare?
Yes. Katelyn Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Katelyn Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katelyn Williams reassigns Medicare benefits to 4 organizations: Hany Nasr MD Inc (Visalia, CA), University Faculty Associates, Inc. (Fresno, CA), Bass Medical Group (Antioch, CA) and Inpatient Specialists Of California, PC (San Bernardino, CA). 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 Katelyn 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 Katelyn Williams was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.
# Katelyn L Williams, NP-C · NPI 1639821655
Nurse Practitioner physician in Visalia, California. Individual provider, active in the CMS NPPES registry since January 20, 2022.
## Identity
- **NPI:** 1639821655 (Entity type: Individual)
- **Enumerated:** January 20, 2022
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 95020121 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 5127 W NOBLE AVE, Visalia, CA 93277-8354
- **Phone:** (559) 713-6515 · **Fax:** (559) 713-6516
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Hany Nasr MD Inc (NPI 1104123892, Visalia, CA); University Faculty Associates, Inc. (NPI 1073911137, Fresno, CA); Bass Medical Group (NPI 1396124574, Antioch, CA); Inpatient Specialists Of California, PC (NPI 1952792475, San Bernardino, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** December 2, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1639821655) · Data from the CMS NPPES public registry.