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

Nicholas B Liappis, LPC

Professional Counselor in Mc Lean, VA · enumerated 2006 · practices at Nicholas B Liappis LLC.

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

National Provider Identifier

1184715138

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Nicholas B Liappis

Credential LPC

Sex Male

Practice address Mc Lean, VA, 22101

Phone (703) 705-2478

Enumeration date Sep 27, 2006

Last updated in NPPES Dec 29, 2023

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 0701003748 (VA) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC 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

What is the NPI number for Nicholas Liappis?

The National Provider Identifier (NPI) for Nicholas Liappis is 1184715138, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nicholas Liappis practice?

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

Other providers at this practice address

Browse all →

Nicholas B Liappis LLC Professional Counselor · Mc Lean, VA NPI 1386284750

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-29.