NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Loudoun Medical Group, PC

Psychologist in Mclean, VA · enumerated 2020 · authorized official Mary Beth Tamasy, Ceo.

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

National Provider Identifier

1538792486

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Loudoun Medical Group, PC
Other name <Unavail>
Parent organization Loudoun Medical Group, PC
Practice address 7921 Jones Branch Drive, Suite 311, Mclean, VA, 22102
Phone (703) 772-4428
Fax (571) 384-6309
Enumeration date Feb 19, 2020
Last updated in NPPES Apr 23, 2024

Taxonomy & classification

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

Authorized official

Name Mary Beth Tamasy
Title Ceo
Phone (703) 737-6001

Other identifiers

Identifier Type State Issuer
1675951440 Medicaid VA -

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 Loudoun Medical Group, PC?
The NPI for Loudoun Medical Group, PC is 1538792486, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Loudoun Medical Group, PC?
NPPES lists Mary Beth Tamasy (Ceo) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-23.