MR. DOUGLAS JAMES YOST MA
NPI 1720266901
Marriage & Family Therapist in Glendora, CA

Q: What is Douglas Yost's NPI number?

The NPI number for Douglas Yost is 1720266901. It was assigned to this individual provider in the NPPES registry on February 10, 2008.

Q: What is Douglas Yost's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Douglas Yost was last updated on January 5, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since February 10, 2008

1122 E ROUTE 66 STE B, GLENDORA, CA 91740(626) 862-2061 Get Directions Write a Review

NPPES record last updated: January 5, 2016. Verified against the NPPES registry weekly; last sync: November 08, 2026.

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About Mr. Douglas James Yost Ma NPPES

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

MR. DOUGLAS JAMES YOST MA (NPI 1720266901) is an individual marriage & family therapist in Glendora, California, licensed in California (49099) and active in the NPI registry since February 2008.

NPPES Registry Identity

NPI1720266901

Entity TypeIndividualMale

Primary Taxonomy106H00000X

Provider Legal NameMR. DOUGLAS JAMES YOSTCredential: MA

Location Address1122 E ROUTE 66 STE BGlendora, CA 91740-3772

Mailing Address1122 E Route 66 Ste BGlendora, CA 91740-3772 · (626) 862-2061

Phone(626) 862-2061

Sole ProprietorYes

Enumeration DateFebruary 10, 2008

Last NPPES UpdateJanuary 5, 2016

✔ NPI 1720266901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers

Taxonomy Code106H00000X

License✔ Licensed in CA · 49099

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.

Also ListedRehabilitation PractitionerTaxonomy 225400000X

1122 E ROUTE 66 STE B, Glendora, CA 91740

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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 Douglas Yost's NPI number?

The NPI number for Douglas Yost is 1720266901. It was assigned to this individual provider in the NPPES registry on February 10, 2008.

Where is Douglas Yost located?

Douglas Yost practices at 1122 E Route 66 Ste B, Glendora, CA 91740. The listed phone number is (626) 862-2061.

What is Douglas Yost'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 Douglas Yost was last updated on January 5, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.