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MR. DAVID WILLIAM DAY LMFT
NPI 1477409332
Marriage & Family Therapist in Tustin, CA

Active since March 04, 2026
515 E 1ST ST STE D, TUSTIN, CA 92780(949) 226-6100 Get Directions Write a Review

NPPES record last updated: March 4, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mr. David William Day Lmft NPPES

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

MR. DAVID WILLIAM DAY LMFT (NPI 1477409332) is an individual marriage & family therapist in Tustin, California, licensed in California (143223) and active in the NPI registry since March 2026.

NPPES Registry Identity

NPI1477409332
Entity TypeIndividualMale
Primary Taxonomy106H00000X
Provider Legal NameMR. DAVID WILLIAM DAYCredential: LMFT
Location Address515 E 1ST ST STE DTustin, CA 92780-3335
Mailing Address8562 Salt Lake DrHuntington Beach, CA 92646-3227
Phone(949) 226-6100
Sole ProprietorYes
Enumeration DateMarch 4, 2026
NPPES CertifiedMarch 4, 2026
✔ NPI 1477409332 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 · 143223
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.
515 E 1ST ST STE D, Tustin, CA 92780
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. GLENN GEORGE STEVENSON LCSW
Social Worker (Clinical)
515 E 1ST ST STE D
TUSTIN, CA 92780
Orange County (714) 468-9963
RICK K MACMAHON LCSW
Counselor (Mental Health)
515 E 1ST ST STE D
TUSTIN, CA 92780
Orange County (714) 721-6760
GOLDEN STATE MARRRIAGE AND FAMILY THERAPY A PROFESSIONAL CORPORATION
Counselor (Mental Health)
515 E 1ST ST STE D
TUSTIN, CA 92780
Orange County (657) 900-8655
DEANNE BROWN PROFESSIONAL CLINICAL COUNSELOR PC
Counselor (Mental Health)
515 E 1ST ST STE D
TUSTIN, CA 92780
Orange County (949) 237-2053

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 David Day's NPI number?

The NPI number for David Day is 1477409332. It was assigned to this individual provider in the NPPES registry on March 4, 2026.

Where is David Day located?

David Day practices at 515 E 1st St Ste D, Tustin, CA 92780. The listed phone number is (949) 226-6100.

What is David Day'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 David Day was last updated on March 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.