Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Olivia Smith-Elnaggar Mitsos, PSYD, MA

Clinical Psychologist in Crofton, MD · enumerated 2025 · practices at Mirror Mental Health.

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

National Provider Identifier

1720940513

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Registry record

Entity type Individual (Type 1)

Name Olivia Smith-Elnaggar Mitsos

Credential PSYD, MA

Sex Female

Practice address 2110 Priest Bridge Dr Ste 1, Crofton, MD, 21114

Phone (443) 937-7089

Fax (443) 292-4570

Enumeration date Dec 1, 2025

Last updated in NPPES Dec 1, 2025

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License A01277 (MD) 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 Olivia Mitsos practice?

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

What is the NPI number for Olivia Mitsos?

The National Provider Identifier (NPI) for Olivia Mitsos is 1720940513, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-01.