1. Home
  2. Directory
  3. California
  4. Arroyo Grande
  5. Counselor
  6. NPI Profile

SIERRA WILLIAMS
NPI 1962974121
Counselor - Mental Health in Arroyo Grande, CA

Active since December 27, 2018
361 ALDER ST, ARROYO GRANDE, CA 93420(805) 448-9970 Get Directions Write a Review

NPPES record last updated: August 18, 2020. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 18, 2020, Dec 27, 2018 (2 updates tracked since 2018).

About Sierra Williams NPPES

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

SIERRA WILLIAMS (NPI 1962974121) is an individual mental health provider in Arroyo Grande, California and active in the NPI registry since December 2018.

NPPES Registry Identity

NPI1962974121
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameSIERRA WILLIAMS
Location Address361 ALDER STArroyo Grande, CA 93420-3819
Mailing Address361 Alder StArroyo Grande, CA 93420-3819 · (805) 448-9970
Phone(805) 448-9970
Sole ProprietorNo
Enumeration DateDecember 27, 2018
Last NPPES UpdateAugust 18, 20202 updates tracked since enumeration
NPPES CertifiedAugust 18, 2020
✔ NPI 1962974121 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
361 ALDER ST, Arroyo Grande, CA 93420
Open in Google Maps ↗

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 Sierra Williams's NPI number?

The NPI number for Sierra Williams is 1962974121. It was assigned to this individual provider in the NPPES registry on December 27, 2018.

Where is Sierra Williams located?

Sierra Williams practices at 361 Alder St, Arroyo Grande, CA 93420. The listed phone number is (805) 448-9970.

What is Sierra Williams's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Sierra Williams was last updated on August 18, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.