Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Lyndsey Irene Cook, CADTP #9868

Q: What is the NPI number for Lyndsey Cook?

The National Provider Identifier (NPI) for Lyndsey Cook is 1235762402, a Type 1 (individual) record in the CMS NPPES registry.

Addiction (Substance Use Disorder) Counselor in Clearlake, CA · enumerated 2020.

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

National Provider Identifier

1235762402

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Registry record

Entity type Individual (Type 1)

Name Lyndsey Irene Cook

Credential CADTP #9868

Sex Female

Practice address 7000b S Center Dr, Clearlake, CA, 95422

Phone (707) 994-7090

Enumeration date Feb 17, 2020

Last updated in NPPES Jan 7, 2024

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 9868 (CA) 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 Lyndsey Cook?

The National Provider Identifier (NPI) for Lyndsey Cook is 1235762402, a Type 1 (individual) record in the CMS NPPES registry.

Where does Lyndsey Cook practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-07.