ALISON WILLIAMS
NPI 1700384096
Counselor - Addiction (Substance Use Disorder) in Hesperia, CA
About Alison Williams NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALISON WILLIAMS (NPI 1700384096) is an individual addiction (substance use disorder) provider in Hesperia, California and active in the NPI registry since February 2018. She is enrolled in Medicare PECOS and maintains a secondary practice location in Hesperia.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Alison Williams is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Alison Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Redlands, CA 92374
- Reassigned Medicare billing, California enrollment
- 43 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.
HESPERIA, CA 92345
HESPERIA, CA 92345
HESPERIA, CA 92345
HESPERIA, CA 92345
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 Alison Williams's NPI number?
The NPI number for Alison Williams is 1700384096. It was assigned to this individual provider in the NPPES registry on February 1, 2018. The provider is also known as Alison Fredricks.
Where is Alison Williams located?
Alison Williams practices at 11776 Mariposa Rd # 103, Hesperia, CA 92345. The listed phone number is (760) 956-2462.
What is Alison Williams's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.
Is Alison Williams enrolled in Medicare?
Yes. Alison Williams is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Alison Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alison Williams reassigns Medicare benefits to Spring To Autumn Family Counseling, Inc. (Redlands, CA). 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 Alison 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 Alison Williams was last updated on May 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.