NPI Portal NPI Lookup & Verification

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

Mr. Andrew Leevirt Null, M.S. LPC

Counselor in Flower Mound, TX · enumerated 2013.

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

National Provider Identifier

1821434960

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Registry record

Entity type Individual (Type 1)
Name Mr. Andrew Leevirt Null
Credential M.S. LPC
Sex Male
Practice address Flower Mound, TX, 75028
Enumeration date May 16, 2013
Last updated in NPPES May 16, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License 68425 (TX) Primary
101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 68425 (TX) Secondary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 68425 (TX) Secondary
101YP1600X Pastoral Counselor Behavioral Health & Social Service Providers · License 68425 (TX) Secondary

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 Andrew Null?
The National Provider Identifier (NPI) for Andrew Null is 1821434960, a Type 1 (individual) record in the CMS NPPES registry.
Where does Andrew Null practice?
The practice location on file with NPPES is in Flower Mound, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-16.