Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CASSANDRA RENEE CROOK
NPI 1164090536
Peer Specialist in Fontana, CA

Active since June 14, 2021
15217 SAN BERNARDINO AVE, FONTANA, CA 92335(909) 386-8510(909) 387-7757 Get Directions Write a Review

NPPES record last updated: July 28, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 28, 2026, May 13, 2025, Sep 12, 2024 and 1 more (4 updates tracked since 2021).

About Cassandra Renee Crook NPPES

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

CASSANDRA RENEE CROOK (NPI 1164090536) is an individual peer specialist in Fontana, California, licensed in California (MPSS-7YGOKX) and active in the NPI registry since June 2021.

NPPES Registry Identity

NPI1164090536
Entity TypeIndividualFemale
Primary Taxonomy175T00000X
Provider Legal NameCASSANDRA RENEE CROOK
Location Address15217 SAN BERNARDINO AVEFontana, CA 92335-5327
Mailing Address15217 San Bernardino AveFontana, CA 92335-5327 · (951) 643-2150
Fax(909) 387-7757
Sole ProprietorNo
Enumeration DateJune 14, 2021
Last NPPES UpdateJuly 28, 20264 updates tracked since enumeration
NPPES CertifiedJuly 28, 2026
NPI 1164090536 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

Primary SpecialtyPeer SpecialistOther Service Providers
Taxonomy Code175T00000X
License Licensed in CA · MPSS-7YGOKX
Definition
Individuals certified to perform peer support services through a training process defined by a government agency, such as the Department of Veterans Affairs or a state mental health department/certification/licensing authority.
Also ListedCase Manager/Care CoordinatorTaxonomy 171M00000X
Also ListedDay Training/Habilitation SpecialistTaxonomy 373H00000X
15217 SAN BERNARDINO AVE, Fontana, CA 92335

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.

Marriage & Family Therapist
15217 SAN BERNARDINO AVE
FONTANA, CA 92335
Licensed Psychiatric Technician
15217 SAN BERNARDINO AVE
FONTANA, CA 92335
Licensed Vocational Nurse
15217 SAN BERNARDINO AVE
FONTANA, CA 92335
Licensed Psychiatric Technician
15217 SAN BERNARDINO AVE
FONTANA, CA 92335
Marriage & Family Therapist
15217 SAN BERNARDINO AVE
FONTANA, CA 92335
Registered Nurse
15217 SAN BERNARDINO AVE
FONTANA, CA 92335
Community Based Residential Treatment Facility, Mental Illness
15217 SAN BERNARDINO AVE
FONTANA, CA 92335
Licensed Psychiatric Technician
15217 SAN BERNARDINO AVE
FONTANA, CA 92335

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 Cassandra Crook's NPI number?

The NPI number for Cassandra Crook is 1164090536. It was assigned to this individual provider in the NPPES registry on June 14, 2021.

Where is Cassandra Crook located?

Cassandra Crook practices at 15217 San Bernardino Ave, Fontana, CA 92335. The listed phone number is (909) 386-8510.

What is Cassandra Crook's specialty?

The primary specialty registered for this NPI is Peer Specialist with taxonomy code 175T00000X.

When was this NPI record last updated?

The NPPES record for Cassandra Crook was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days 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.