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

SYLVAN O'BRIEN
NPI 1811584915
Marriage & Family Therapist in Highlands Ranch, CO

Q: What is Sylvan O'brien's NPI number?

The NPI number for Sylvan O'brien is 1811584915. It was assigned to this individual provider in the NPPES registry on December 23, 2020.

Q: What is Sylvan O'brien'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 Sylvan O'brien was last updated on September 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 December 23, 2020

10466 MARIGOLD CT, HIGHLANDS RANCH, CO 80126(619) 890-8569 Get Directions Write a Review

NPPES record last updated: September 26, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 26, 2026, Dec 23, 2020 (2 updates tracked since 2020).

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About Sylvan O'brien NPPES

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

SYLVAN O'BRIEN (NPI 1811584915) is an individual marriage & family therapist in Highlands Ranch, Colorado, licensed in California (163836) and active in the NPI registry since December 2020.

NPPES Registry Identity

NPI1811584915

Entity TypeIndividualFemale

Primary Taxonomy106H00000X

Provider Legal NameSYLVAN O'BRIEN

Location Address10466 MARIGOLD CTHighlands Ranch, CO 80126-5623

Mailing Address10466 Marigold CtHighlands Ranch, CO 80126-5623 · (619) 890-8569

Phone(619) 890-8569

Sole ProprietorYes

Enumeration DateDecember 23, 2020

Last NPPES UpdateSeptember 26, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 26, 2026

✔ NPI 1811584915 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 · 163836

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.

10466 MARIGOLD CT, Highlands Ranch, CO 80126

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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 Sylvan O'brien's NPI number?

The NPI number for Sylvan O'brien is 1811584915. It was assigned to this individual provider in the NPPES registry on December 23, 2020.

Where is Sylvan O'brien located?

Sylvan O'brien practices at 10466 Marigold Ct, Highlands Ranch, CO 80126. The listed phone number is (619) 890-8569.

What is Sylvan O'brien'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 Sylvan O'brien was last updated on September 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.