Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

SEAN JAMES O'CONNOR
NPI 1134028574
Counselor - Mental Health in Leesburg, VA

Q: What is Sean O'connor's NPI number?

The NPI number for Sean O'connor is 1134028574. It was assigned to this individual provider in the NPPES registry on November 3, 2026.

Q: What is Sean O'connor's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Q: When was this NPI record last updated?

The NPPES record for Sean O'connor was last updated on November 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 03, 2026

19 E MARKET ST STE 104, LEESBURG, VA 20176(571) 266-1808 Get Directions Write a Review

NPPES record added: November 3, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

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About Sean James O'connor NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SEAN JAMES O'CONNOR (NPI 1134028574) is an individual mental health provider in Leesburg, Virginia, licensed in Virginia (0704019716) and active in the NPI registry since November 2026.

NPPES Registry Identity

NPI1134028574

Entity TypeIndividualMale

Primary Taxonomy101YM0800X

Provider Legal NameSEAN JAMES O'CONNOR

Location Address19 E MARKET ST STE 104Leesburg, VA 20176-3001

Mailing Address19 E Market St Ste 104Leesburg, VA 20176-3001 · (571) 266-1808

Phone(571) 266-1808

Sole ProprietorNo

Enumeration DateNovember 3, 2026

NPPES CertifiedNovember 3, 2026

✔ NPI 1134028574 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

License✔ Licensed in VA · 0704019716

19 E MARKET ST STE 104, Leesburg, VA 20176

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Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CHRISTIAN AMALU PSYD

Psychologist (Clinical)

19 E MARKET ST STE 104
LEESBURG, VA 20176

Loudoun County (703) 988-4339

MRS. MARIA MCMURRAY CUNNINGHAM

Counselor (Mental Health)

19 E MARKET ST STE 104
LEESBURG, VA 20176

Loudoun County (571) 266-1808

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sean O'connor's NPI number?

The NPI number for Sean O'connor is 1134028574. It was assigned to this individual provider in the NPPES registry on November 3, 2026.

Where is Sean O'connor located?

Sean O'connor practices at 19 E Market St Ste 104, Leesburg, VA 20176. The listed phone number is (571) 266-1808.

What is Sean O'connor's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Sean O'connor was last updated on November 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.