NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Synapse Associates LLC

Clinical Psychologist in Leesburg, VA · enumerated 2009 · authorized official Holiday Rondeau, Vice President.

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

National Provider Identifier

1669709036

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Synapse Associates LLC
Practice address 215 Loudoun St Se, Leesburg, VA, 20175
Fax (540) 882-9310
Enumeration date Nov 5, 2009
Last updated in NPPES Nov 5, 2009

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers Primary

Authorized official

Name Holiday Rondeau
Title Vice President

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 Synapse Associates LLC?
The NPI for Synapse Associates LLC is 1669709036, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Synapse Associates LLC?
NPPES lists Holiday Rondeau (Vice President) 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 2009-11-05.