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

Dr. Karyne E. Messina, PSYCHOLOGIST, ED.D

Professional Counselor in Chevy Chase, MD · enumerated 2007.

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

National Provider Identifier

1902944549

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Registry record

Entity type Individual (Type 1)

Name Dr. Karyne E. Messina

Credential PSYCHOLOGIST, ED.D

Sex Female

Practice address Chevy Chase, MD, 20815

Phone (301) 656-7085

Fax (301) 656-7085

Enumeration date Feb 4, 2007

Last updated in NPPES Sep 11, 2025

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

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 0701001122 (VA) Primary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 02234 (MD) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LC301008 (DC) Secondary

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 Karyne Messina practice?

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

What is the NPI number for Karyne Messina?

The National Provider Identifier (NPI) for Karyne Messina is 1902944549, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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