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Gray Matters, Greenwich

Mental Health Counselor in Old Greenwich, CT · enumerated 2023 · authorized official Alisa Pillai, Partner.

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

National Provider Identifier

1043924525

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Registry record

Entity type Organization (Type 2)
Legal business name Gray Matters, Greenwich
Practice address 1455 E Putnam Ave, Old Greenwich, CT, 06870
Phone (203) 956-3060
Enumeration date Jan 10, 2023
Last updated in NPPES Jan 10, 2023

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name Alisa Pillai
Title Partner
Phone (914) 325-3896

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

Who is the authorized official for Gray Matters, Greenwich?
NPPES lists Alisa Pillai (Partner) as the authorized official for this organization.
What is the NPI number for Gray Matters, Greenwich?
The NPI for Gray Matters, Greenwich is 1043924525, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-10.