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

Dr. Joel Guarna, PHD

Cognitive & Behavioral Psychologist in Portland, ME · enumerated 2006.

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

National Provider Identifier

1376501833

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Registry record

Entity type Individual (Type 1)

Name Dr. Joel Guarna

Credential PHD

Sex Male

Practice address Portland, ME, 04101

Phone (207) 272-8500

Fax (207) 773-7386

Enumeration date May 3, 2006

Last updated in NPPES Sep 11, 2025

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 PS1159 (ME) Secondary

103TA0400X Addiction (Substance Use Disorder) Psychologist Behavioral Health & Social Service Providers · License PS1159 (ME) Secondary

103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License PS1159 (ME) 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
302912	Other	NH	TRICARE
187815	Other	ME	ANTHEM BLUE CROSS BLUE SH

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Joel Guarna?

Joel Guarna is registered in NPPES with the primary taxonomy of Cognitive & Behavioral Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.