Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Lillian Sophia Rose Walker, BCABA

Behavior Analyst in Bloomington, IN · enumerated 2019.

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

National Provider Identifier

1841832144

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Registry record

Entity type Individual (Type 1)

Name Lillian Sophia Rose Walker

Credential BCABA

Sex Female

Practice address 227 W Grimes Ln, Bloomington, IN, 47403

Phone (812) 322-0313

Enumeration date Oct 9, 2019

Last updated in NPPES Jun 4, 2024

Taxonomy & licenses

106E00000X Assistant Behavior Analyst Behavioral Health & Social Service Providers · License 0-23-14879 (IN) Secondary

106S00000X Behavior Technician Behavioral Health & Social Service Providers Secondary

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-24-73361 (IN) Primary

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 Lillian Walker?

The National Provider Identifier (NPI) for Lillian Walker is 1841832144, a Type 1 (individual) record in the CMS NPPES registry.

Where does Lillian Walker practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-04.