Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rachel Marshall, PHD

Psychologist in Greenwich, CT · enumerated 2024.

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

National Provider Identifier

1679309892

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Registry record

Entity type Individual (Type 1)

Name Rachel Marshall

Credential PHD

Sex Female

Practice address 55 Holly Hill Ln, Greenwich, CT, 06830

Phone (203) 863-2939

Enumeration date Sep 12, 2024

Last updated in NPPES Sep 12, 2024

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 4868 (CT) Secondary

103TH0004X Health Psychologist Behavioral Health & Social Service Providers · License 4868 (CT) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 4868 (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.

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Frequently asked questions

How do I verify Rachel Marshall's NPI record?

Cross-check NPI 1679309892 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1679309892 active?

Yes, as of the latest NPPES snapshot, NPI 1679309892 is active (record last updated 2024-09-12).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-12.