Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Elizabeth Toon Powell Parthum, BCBA

Behavior Analyst in Manassas, VA · enumerated 2018.

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

National Provider Identifier

1821599085

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Registry record

Entity type Individual (Type 1)

Name Ms. Elizabeth Toon Powell Parthum

Credential BCBA

Sex Female

Practice address 9994 Sowder Village Sq # 102, Manassas, VA, 20109

Phone (855) 832-6727

Enumeration date Feb 23, 2018

Last updated in NPPES May 28, 2026

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-25-79909 (VA) Primary

106S00000X Behavior Technician Behavioral Health & Social Service Providers · License RBT-17-28463 (DC) 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

Is NPI 1821599085 active?

Yes, as of the latest NPPES snapshot, NPI 1821599085 is active (record last updated 2026-05-28).

How do I verify Elizabeth Parthum's NPI record?

Cross-check NPI 1821599085 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-28.