Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Dorothy Ann Krentz, CADCA

Addiction (Substance Use Disorder) Counselor in Brentwood, CA · enumerated 2011.

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

National Provider Identifier

1578832903

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Registry record

Entity type Individual (Type 1)

Name Ms. Dorothy Ann Krentz

Credential CADCA

Sex Female

Practice address 2400 Shady Willow Ln Unit 23d, Brentwood, CA, 94513

Phone (925) 305-0740

Enumeration date Dec 13, 2011

Last updated in NPPES Mar 27, 2013

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License I4620812 (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.

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Frequently asked questions

Where does Dorothy Krentz practice?

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

What is the NPI number for Dorothy Krentz?

The National Provider Identifier (NPI) for Dorothy Krentz is 1578832903, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-27.