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

STEPHANIE MARIE O'NEIL AMFT
NPI 1689177602
Marriage & Family Therapist in San Diego, CA

Q: What is Stephanie O'neil's NPI number?

The NPI number for Stephanie O'neil is 1689177602. It was assigned to this individual provider in the NPPES registry on March 15, 2018.

Q: What is Stephanie O'neil'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 Stephanie O'neil was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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 March 15, 2018

ROCK MOUNTAIN 446 ALTA RD, 5400, SAN DIEGO, CA 92158(619) 409-5000 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2026, May 15, 2023, Sep 9, 2021 and 1 more (4 updates tracked since 2018).

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About Stephanie Marie O'neil Amft NPPES

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

STEPHANIE MARIE O'NEIL AMFT (NPI 1689177602) is an individual marriage & family therapist in San Diego, California, licensed in California (135870) and active in the NPI registry since March 2018.

NPPES Registry Identity

NPI1689177602

Entity TypeIndividualFemale

Primary Taxonomy106H00000X

Provider Legal NameSTEPHANIE MARIE O'NEILCredential: AMFT

Location AddressROCK MOUNTAIN 446 ALTA RD, 5400San Diego, CA 92158-0001

Mailing AddressRock Mountain 446 Alta Rd, 5400San Diego, CA 92158-0001 · (619) 409-5000

Phone(619) 409-5000

Sole ProprietorNo

Enumeration DateMarch 15, 2018

Last NPPES UpdateSeptember 29, 20264 updates tracked since enumeration

NPPES CertifiedSeptember 29, 2026

✔ NPI 1689177602 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 · 135870

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.

ROCK MOUNTAIN 446 ALTA RD, San Diego, CA 92158

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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 Stephanie O'neil's NPI number?

The NPI number for Stephanie O'neil is 1689177602. It was assigned to this individual provider in the NPPES registry on March 15, 2018.

Where is Stephanie O'neil located?

Stephanie O'neil practices at Rock Mountain 446 Alta Rd 5400, San Diego, CA 92158. The listed phone number is (619) 409-5000.

What is Stephanie O'neil'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 Stephanie O'neil was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.