Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. David Randall Marquis, COUNSELOR

Counselor in Colton, CA · enumerated 2008.

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

National Provider Identifier

1518131580

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Registry record

Entity type Individual (Type 1)

Name Mr. David Randall Marquis

Credential COUNSELOR

Sex Male

Practice address Colton, CA, 92324

Phone (909) 430-0923

Fax (909) 430-0923

Enumeration date Apr 21, 2008

Last updated in NPPES Apr 21, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License 360068AN (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
360068AN	Other	CA	MEDICAL

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.

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Frequently asked questions

How do I verify David Marquis's NPI record?

Cross-check NPI 1518131580 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1518131580 active?

Yes, as of the latest NPPES snapshot, NPI 1518131580 is active (record last updated 2008-04-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-21.