Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Frederick William Green III, PSYD

Psychologist in Rehoboth, MA · enumerated 2015.

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

National Provider Identifier

1629451588

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Registry record

Entity type Individual (Type 1)

Name Dr. Frederick William Green III

Credential PSYD

Sex Male

Practice address Rehoboth, MA, 02769

Phone (207) 317-0557

Enumeration date Jul 9, 2015

Last updated in NPPES Aug 25, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PS01612 (RI) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 3489 (WI) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 11457 (MA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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

What is the NPI number for Frederick Green?

The National Provider Identifier (NPI) for Frederick Green is 1629451588, a Type 1 (individual) record in the CMS NPPES registry.

Where does Frederick Green practice?

The practice location on file with NPPES is in Rehoboth, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-25.