Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sidney Bost, RBT

Q: What is the NPI number for Sidney Bost?

The National Provider Identifier (NPI) for Sidney Bost is 1669018651, a Type 1 (individual) record in the CMS NPPES registry.

Behavior Technician in O Fallon, IL · enumerated 2019 · practices at Acorn Health of Illinois, LLC.

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

National Provider Identifier

1669018651

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Registry record

Entity type Individual (Type 1)

Name Sidney Bost

Credential RBT

Sex Female

Practice address 6 Eagle Ctr Ste 1, O Fallon, IL, 62269

Phone (618) 206-8816

Enumeration date Nov 25, 2019

Last updated in NPPES Nov 25, 2019

Taxonomy & licenses

106S00000X Behavior Technician Behavioral Health & Social Service Providers 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

Where does Sidney Bost practice?

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

What is the NPI number for Sidney Bost?

The National Provider Identifier (NPI) for Sidney Bost is 1669018651, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-11-25.