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The Greenwich Practice

Adult Mental Health Clinic/Center in Greenwich, CT · enumerated 2024 · authorized official Nikki Katz, Primary Agent.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1912722828

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Registry record

Entity type Organization (Type 2)
Legal business name The Greenwich Practice
Practice address 50 Oak Ridge St Apt B, Greenwich, CT, 06830
Phone (203) 610-0673
Enumeration date Nov 18, 2024
Last updated in NPPES Nov 18, 2024

Taxonomy & classification

261QM0850X Adult Mental Health Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Nikki Katz
Title Primary Agent
Phone (203) 610-0673

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for The Greenwich Practice?
The NPI for The Greenwich Practice is 1912722828, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for The Greenwich Practice?
NPPES lists Nikki Katz (Primary Agent) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-18.