Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

OLGA DIAMANTIS PSYCHOTHERAPY LLC
NPI 1871412361
Clinic/Center - Adult Mental Health in Metuchen, NJ

Q: What is Olga Diamantis Psychotherapy LLC's NPI number?

The NPI number for Olga Diamantis Psychotherapy LLC is 1871412361. It was assigned to this organization in the NPPES registry on July 10, 2026.

Q: What is Olga Diamantis Psychotherapy LLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Adult Mental Health, with taxonomy code 261QM0850X.

Active since July 10, 2026

35 AMBOY AVE, METUCHEN, NJ 08840(848) 200-2118 Get Directions Write a Review

NPPES record added: July 10, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

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About Olga Diamantis Psychotherapy Llc NPPES

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

OLGA DIAMANTIS PSYCHOTHERAPY LLC (NPI 1871412361) is a healthcare organization registered as an adult mental health in Metuchen, New Jersey and active in the NPI registry since July 2026. The organization lists Olga Diamantis, Owner/therapist, as its authorized official.

NPPES Registry Identity

NPI1871412361

Entity TypeOrganization

Primary Taxonomy261QM0850X

Legal Business NameOLGA DIAMANTIS PSYCHOTHERAPY LLC

Location Address35 AMBOY AVEMetuchen, NJ 08840-2578

Mailing Address29 Holland AvePeapack, NJ 07977-5008 · (848) 200-2118

Phone(848) 200-2118

Organization SubpartNo

Authorized OfficialOlga DiamantisOwner/therapist · (848) 200-2118

Enumeration DateJuly 10, 2026

NPPES CertifiedJuly 10, 2026

✔ NPI 1871412361 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Adult Mental HealthAmbulatory Health Care Facilities

Taxonomy Code261QM0850X

Definition

An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to mental and behavioral disorders in adults.

35 AMBOY AVE, Metuchen, NJ 08840

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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. BRIAN FORD LCSW

Social Worker (Clinical)

35 AMBOY AVE
METUCHEN, NJ 08840

Middlesex County (732) 321-1686

DR. CAESAR MICHAEL REVANO D.D.S.

Dentist (General Practice)

35 AMBOY AVE
METUCHEN, NJ 08840

Middlesex County (732) 549-1144

OM PSYCHOTHERAPY GROUP, LLC

Clinic/Center (Mental Health (Including Community Mental Health Center))

35 AMBOY AVE
METUCHEN, NJ 08840

Middlesex County (848) 200-5533

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 Olga Diamantis Psychotherapy LLC's NPI number?

The NPI number for Olga Diamantis Psychotherapy LLC is 1871412361. It was assigned to this organization in the NPPES registry on July 10, 2026.

Where is Olga Diamantis Psychotherapy LLC located?

Olga Diamantis Psychotherapy LLC is located at 35 Amboy Ave, Metuchen, NJ 08840. The listed phone number is (848) 200-2118.

What is Olga Diamantis Psychotherapy LLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Adult Mental Health, with taxonomy code 261QM0850X.

When was this NPI record last updated?

The NPPES record for Olga Diamantis Psychotherapy LLC was last updated on July 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.