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

Dr. Martin Denn, PSYD

Q: What is the NPI number for Martin Denn?

The National Provider Identifier (NPI) for Martin Denn is 1770878795, a Type 1 (individual) record in the CMS NPPES registry.

Psychologist in Manhattan Beach, CA · enumerated 2011.

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

National Provider Identifier

1770878795

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Registry record

Entity type Individual (Type 1)

Name Dr. Martin Denn

Credential PSYD

Sex Male

Practice address Manhattan Beach, CA, 90266

Phone (310) 545-9412

Fax (310) 545-6339

Enumeration date Jun 17, 2011

Last updated in NPPES Jun 17, 2011

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 PYS23480 (CA) 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

Where does Martin Denn practice?

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

What is the NPI number for Martin Denn?

The National Provider Identifier (NPI) for Martin Denn is 1770878795, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-17.