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

DR. CHRISTOPHER D. REGAN PSY.D.
NPI 1861600223
Psychologist - Addiction (Substance Use Disorder) in Justin, TX

Q: What is Christopher Regan's NPI number?

The NPI number for Christopher Regan is 1861600223. It was assigned to this individual provider in the NPPES registry on May 18, 2007.

Q: What is Christopher Regan's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Addiction (Substance Use Disorder), with taxonomy code 103TA0400X.

Q: When was this NPI record last updated?

The NPPES record for Christopher Regan was last updated on August 12, 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.

Active since May 18, 2007

853 BLACKHORSE TRL, JUSTIN, TX 76247(310) 920-1433 Get Directions Write a Review

NPPES record last updated: August 12, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 12, 2026, Jul 28, 2021 (2 updates tracked since 2021).

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About Dr. Christopher D. Regan Psy.d. NPPES

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

DR. CHRISTOPHER D. REGAN PSY.D. (NPI 1861600223) is an individual addiction (substance use disorder) provider in Justin, Texas and active in the NPI registry since May 2007.

NPPES Registry Identity

NPI1861600223

Entity TypeIndividualMale

Primary Taxonomy103TA0400X

Provider Legal NameDR. CHRISTOPHER D. REGANCredential: PSY.D.

Location Address853 BLACKHORSE TRLJustin, TX 76247-1966

Mailing Address853 Blackhorse TrlJustin, TX 76247-1966 · (310) 920-1433

Phone(310) 920-1433

Sole ProprietorYes

Enumeration DateMay 18, 2007

Last NPPES UpdateAugust 12, 20262 updates tracked since enumeration

NPPES CertifiedAugust 12, 2026

✔ NPI 1861600223 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers

Taxonomy Code103TA0400X

Definition

A psychologist with a proficiency that involves the application of psychological treatment of addiction stemming from the use of alcohol and other psychoactive substances (e.g., nicotine, marijuana, cocaine, heroin) or behavioral addictions (e.g., gambling) with the aim of cessation or reduction of use and/or the amelioration of emotional, behavioral, interpersonal and other problems arising from the addictive behavior.

853 BLACKHORSE TRL, Justin, TX 76247

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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 Christopher Regan's NPI number?

The NPI number for Christopher Regan is 1861600223. It was assigned to this individual provider in the NPPES registry on May 18, 2007.

Where is Christopher Regan located?

Christopher Regan practices at 853 Blackhorse Trl, Justin, TX 76247. The listed phone number is (310) 920-1433.

What is Christopher Regan's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Addiction (Substance Use Disorder), with taxonomy code 103TA0400X.

When was this NPI record last updated?

The NPPES record for Christopher Regan was last updated on August 12, 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.