MS. MARY KAY O'CONNOR MFT
NPI 1881750545
Counselor - Mental Health in Fullerton, CA

Q: What is Mary O'connor's NPI number?

The NPI number for Mary O'connor is 1881750545. It was assigned to this individual provider in the NPPES registry on December 28, 2006.

Q: What is Mary O'connor's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Q: When was this NPI record last updated?

The NPPES record for Mary O'connor was last updated on March 12, 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.

Active since December 28, 2006

2131 VICTORIA DR, FULLERTON, CA 92831(714) 206-3900 Get Directions Write a Review

NPPES record last updated: March 12, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Ms. Mary Kay O'connor Mft NPPES

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

MS. MARY KAY O'CONNOR MFT (NPI 1881750545) is an individual mental health provider in Fullerton, California, licensed in California (20293) and active in the NPI registry since December 2006.

NPPES Registry Identity

NPI1881750545

Entity TypeIndividualFemale

Primary Taxonomy101YM0800X

Provider Legal NameMS. MARY KAY O'CONNORCredential: MFT

Location Address2131 VICTORIA DRFullerton, CA 92831-2133

Mailing Address2131 Victoria DrFullerton, CA 92831-2133 · (714) 206-3900

Phone(714) 206-3900

Sole ProprietorYes

Enumeration DateDecember 28, 2006

Last NPPES UpdateMarch 12, 2026

NPPES CertifiedMarch 12, 2026

✔ NPI 1881750545 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

License✔ Licensed in CA · 20293

2131 VICTORIA DR, Fullerton, CA 92831

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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 Mary O'connor's NPI number?

The NPI number for Mary O'connor is 1881750545. It was assigned to this individual provider in the NPPES registry on December 28, 2006.

Where is Mary O'connor located?

Mary O'connor practices at 2131 Victoria Dr, Fullerton, CA 92831. The listed phone number is (714) 206-3900.

What is Mary O'connor's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Mary O'connor was last updated on March 12, 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.