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

Dr. Martin Dean Diner, PH.D

Clinical Psychologist in Bridgehampton, NY · enumerated 2007.

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

National Provider Identifier

1285831289

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Registry record

Entity type Individual (Type 1)

Name Dr. Martin Dean Diner

Credential PH.D

Sex Male

Practice address Bridgehampton, NY, 11932

Phone (631) 725-2132

Fax (631) 237-4967

Enumeration date Jul 2, 2007

Last updated in NPPES Dec 30, 2009

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 011418 (NY) Primary

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

Other identifiers

Identifier	Type	State	Issuer
PSY6665	Other	CA	INACTIVE LICENSE
011418	Other	NY	LICENSE
31149	Other	-	NATIONAL REGISTER

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 1285831289 active?

Yes, as of the latest NPPES snapshot, NPI 1285831289 is active (record last updated 2009-12-30).

How do I verify Martin Diner's NPI record?

Cross-check NPI 1285831289 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-30.