Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Joseph Leonard, PHD

Clinical Psychologist in Muskegon, MI · enumerated 2006 · practices at Harbor Psychological Associates PC.

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

National Provider Identifier

1497821144

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Registry record

Entity type Individual (Type 1)

Name Dr. David Joseph Leonard

Credential PHD

Sex Male

Practice address 1148 4th St, Muskegon, MI, 49441

Phone (231) 726-2299

Fax (231) 728-6345

Enumeration date Nov 27, 2006

Last updated in NPPES Jun 24, 2013

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 001593 (MI) 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
OF14510	Other	-	BCBS
P69385	Other	-	BCN

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 David Leonard?

The National Provider Identifier (NPI) for David Leonard is 1497821144, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Leonard practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-06-24.