Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Lee Davis

Q: What is the NPI number for Robert Davis?

The National Provider Identifier (NPI) for Robert Davis is 1235006156, a Type 1 (individual) record in the CMS NPPES registry.

Addiction (Substance Use Disorder) Counselor in Clayton, CA · enumerated 2025.

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

National Provider Identifier

1235006156

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Registry record

Entity type Individual (Type 1)

Name Robert Lee Davis

Sex Male

Practice address 11540 Marsh Creek Rd, Clayton, CA, 94517

Phone (925) 672-5700

Enumeration date Oct 23, 2025

Last updated in NPPES Oct 23, 2025

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 21702 (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 Robert Davis?

The National Provider Identifier (NPI) for Robert Davis is 1235006156, a Type 1 (individual) record in the CMS NPPES registry.

Where does Robert Davis practice?

The practice location on file with NPPES is in Clayton, 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 2025-10-23.