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JEFFREY LOUIS SLACK
NPI 1831878271
Marriage & Family Therapist in Chino Hills, CA

Active since July 13, 2023
3608 STEVE MCQUEEN DR, CHINO HILLS, CA 91709(909) 628-1217(909) 306-5427 Get Directions Write a Review

NPPES record last updated: October 1, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Jeffrey Louis Slack NPPES

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

JEFFREY LOUIS SLACK (NPI 1831878271) is an individual marriage & family therapist in Chino Hills, California and active in the NPI registry since July 2023.

NPPES Registry Identity

NPI1831878271
Entity TypeIndividualMale
Primary Taxonomy106H00000X
Provider Legal NameJEFFREY LOUIS SLACK
Location Address3608 STEVE MCQUEEN DRChino Hills, CA 91709-5455
Mailing Address1907 Boys Republic DrChino Hills, CA 91709-5447 · (909) 628-1217 · Fax (909) 306-5427
Phone(909) 628-1217
Fax(909) 306-5427
Sole ProprietorNo
Enumeration DateJuly 13, 2023
Last NPPES UpdateOctober 1, 2025
NPPES CertifiedOctober 1, 2025
✔ NPI 1831878271 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
Definition
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.
3608 STEVE MCQUEEN DR, Chino Hills, CA 91709
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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.

WAYNE EUGENE STEMMLER
Marriage & Family Therapist
3608 STEVE MCQUEEN DR
CHINO HILLS, CA 91709
San Bernardino County (909) 740-3138
AIDALINA DANIA CASTRO
Day Training/Habilitation Specialist
3608 STEVE MCQUEEN DR
CHINO HILLS, CA 91709
San Bernardino County (909) 628-1217
CARLOS OCAMPO
Marriage & Family Therapist
3608 STEVE MCQUEEN DR
CHINO HILLS, CA 91709
San Bernardino County (909) 740-3138
LESLI RECENDIZ GONZALEZ
Rehabilitation Practitioner
3608 STEVE MCQUEEN DR
CHINO HILLS, CA 91709
San Bernardino County (909) 740-3138
ASHLEY MARIE SALAZAR
Social Worker (Clinical)
3608 STEVE MCQUEEN DR
CHINO HILLS, CA 91709
San Bernardino County (909) 740-3138
CYRUS ANTHONY-ELIAS CARRILLO
Case Manager/Care Coordinator
3608 STEVE MCQUEEN DR
CHINO HILLS, CA 91709
San Bernardino County (909) 740-3138
AMANDA KAY STADELBACHER
Counselor (Professional)
3608 STEVE MCQUEEN DR
CHINO HILLS, CA 91709
San Bernardino County (909) 740-3138

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 Jeffrey Slack's NPI number?

The NPI number for Jeffrey Slack is 1831878271. It was assigned to this individual provider in the NPPES registry on July 13, 2023.

Where is Jeffrey Slack located?

Jeffrey Slack practices at 3608 Steve Mcqueen Dr, Chino Hills, CA 91709. The listed phone number is (909) 628-1217.

What is Jeffrey Slack's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

When was this NPI record last updated?

The NPPES record for Jeffrey Slack was last updated on October 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.