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LESLIE DIANNE GUSTAFSON MFT
NPI 1720296551
Marriage & Family Therapist in Tustin, CA

Active since May 17, 2007
14751 PLAZA DR STE F, TUSTIN, CA 92780(714) 284-7445 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Leslie Dianne Gustafson Mft NPPES

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

LESLIE DIANNE GUSTAFSON MFT (NPI 1720296551) is an individual marriage & family therapist in Tustin, California, licensed in California (MFT31850) and active in the NPI registry since May 2007.

NPPES Registry Identity

NPI1720296551
Entity TypeIndividualFemale
Primary Taxonomy106H00000X
Provider Legal NameLESLIE DIANNE GUSTAFSONCredential: MFT
Location Address14751 PLAZA DR STE FTustin, CA 92780-2773
Mailing Address3 ParmaIrvine, CA 92602-1656 · (714) 284-7445
Phone(714) 284-7445
Sole ProprietorYes
Enumeration DateMay 17, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1720296551 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 · MFT31850
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.
14751 PLAZA DR STE F, Tustin, CA 92780
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Other Providers at the Same Location NPPES 3

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

MR. DIMITRI ARMANO QUAGLIERINI
Marriage & Family Therapist
14751 PLAZA DR STE F
TUSTIN, CA 92780
Orange County (949) 293-9099
CECILIA JULIANA MCKAY LMFT
Marriage & Family Therapist
14751 PLAZA DR STE F
TUSTIN, CA 92780
Orange County (714) 501-5332
MS. DEBRA JUNE VAJCNER L.M.F.T.
Marriage & Family Therapist
14751 PLAZA DR STE F
TUSTIN, CA 92780
Orange County (714) 543-4222

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 Leslie Gustafson's NPI number?

The NPI number for Leslie Gustafson is 1720296551. It was assigned to this individual provider in the NPPES registry on May 17, 2007.

Where is Leslie Gustafson located?

Leslie Gustafson practices at 14751 Plaza Dr Ste F, Tustin, CA 92780. The listed phone number is (714) 284-7445.

What is Leslie Gustafson'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 Leslie Gustafson was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS; the most recent full sync was completed on July 26, 2026. Anyone can also request an on-demand re-check of this record against the live CMS registry, directly from this page.