Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey F. Porter, PH.D.

Clinical Psychologist in Grand Rapids, MI · enumerated 2006.

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

National Provider Identifier

1588633366

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Registry record

Entity type Individual (Type 1)

Name Jeffrey F. Porter

Credential PH.D.

Sex Male

Practice address 145 Michigan St Ne Ste 3100, Grand Rapids, MI, 49503

Phone (616) 954-9800

Fax (616) 954-2116

Enumeration date Mar 15, 2006

Last updated in NPPES Mar 13, 2020

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 6301010581 (MI) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Jeffrey Porter?

The National Provider Identifier (NPI) for Jeffrey Porter is 1588633366, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jeffrey Porter practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-13.