Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ruth Grant, PHD

Psychologist in Darien, CT · enumerated 2006.

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

National Provider Identifier

1891725925

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Registry record

Entity type Individual (Type 1)

Name Ruth Grant

Credential PHD

Sex Female

Practice address 17 Old Kings Hwy S, Suite 1-2, Darien, CT, 06820

Phone (203) 655-1559

Fax (203) 655-1914

Enumeration date Jul 4, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 000851 (CT) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1891725925 active?

Yes, as of the latest NPPES snapshot, NPI 1891725925 is active (record last updated 2007-07-08).

How do I verify Ruth Grant's NPI record?

Cross-check NPI 1891725925 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Kathleen Africano Psychiatric/Mental Health Nurse Practitioner · Darien, CT NPI 1659300416 Leo Chaikovsky Psychiatry Physician · Darien, CT NPI 1659300465 Victor Patin Psychiatry Physician · Darien, CT NPI 1881623544 Louis Trevisan Psychiatry Physician · Darien, CT NPI 1932132867 Celeste Pociask Dermatology Physician · Darien, CT NPI 1407903214 Celeste Romig MD PC Dermatology Physician · Darien, CT NPI 1750401360 Geriatric Psychiatry Associates, PC Adult Psychiatric/Mental Health Clinical Nurse Specialist · Darien, CT NPI 1902002561 Geriatric Psychiatry Associates, PC Psychologist · Darien, CT NPI 1275739831

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.