Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Willow Aba Services LLC

Q: What is the NPI number for Willow Aba Services LLC?

The NPI for Willow Aba Services LLC is 1952046039, a Type 2 (organization) record in the CMS NPPES registry.

Behavior Analyst in Wilmington, NC · enumerated 2022 · authorized official Tanner Sierks, Owner.

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

National Provider Identifier

1952046039

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Registry record

Entity type Organization (Type 2)

Legal business name Willow Aba Services LLC

Practice address 3015 Market St, Wilmington, NC, 28403

Phone (720) 575-9340

Enumeration date May 3, 2022

Last updated in NPPES Sep 26, 2025

Taxonomy & classification

103K00000X Behavior Analyst Behavioral Health & Social Service Providers Primary

Authorized official

Name Tanner Sierks

Title Owner

Phone (720) 319-7614

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

Who is the authorized official for Willow Aba Services LLC?

NPPES lists Tanner Sierks (Owner) as the authorized official for this organization.

What is the NPI number for Willow Aba Services LLC?

The NPI for Willow Aba Services LLC is 1952046039, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-26.