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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

RONALD JOHN CROSTHWAITE
NPI 1659282515
Marriage & Family Therapist in La Canada, CA

Active since September 16, 2026
1346 FOOTHILL BLVD STE 105, LA CANADA, CA 91011(818) 659-0480 Get Directions Write a Review

NPPES record added: September 16, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

About Ronald John Crosthwaite NPPES

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

RONALD JOHN CROSTHWAITE (NPI 1659282515) is an individual marriage & family therapist in La Canada, California, licensed in California (AMFT137868) and active in the NPI registry since September 2026.

NPPES Registry Identity

NPI1659282515
Entity TypeIndividualMale
Primary Taxonomy106H00000X
Provider Legal NameRONALD JOHN CROSTHWAITE
Location Address1346 FOOTHILL BLVD STE 105La Canada, CA 91011-4311
Mailing Address1346 Foothill Blvd Ste 105La Canada, CA 91011-4311 · (818) 659-0480
Phone(818) 659-0480
Sole ProprietorNo
Enumeration DateSeptember 16, 2026
NPPES CertifiedSeptember 16, 2026
✔ NPI 1659282515 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
License✔ Licensed in CA · AMFT137868
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.
1346 FOOTHILL BLVD STE 105, La Canada, CA 91011
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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 Ronald Crosthwaite's NPI number?

The NPI number for Ronald Crosthwaite is 1659282515. It was assigned to this individual provider in the NPPES registry on September 16, 2026.

Where is Ronald Crosthwaite located?

Ronald Crosthwaite practices at 1346 Foothill Blvd Ste 105, La Canada, CA 91011. The listed phone number is (818) 659-0480.

What is Ronald Crosthwaite'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 Ronald Crosthwaite was last updated on September 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.