Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Alcohol and Drug Abuse Council of Contra Costa, Inc.

Addiction (Substance Use Disorder) Counselor in Walnut Creek, CA · enumerated 2018 · authorized official Diane Carpenter, Executive Director.

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

National Provider Identifier

1750879805

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Registry record

Entity type Organization (Type 2)

Legal business name Alcohol and Drug Abuse Council of Contra Costa, Inc.

Practice address 2020 N Broadway Ste 101, Walnut Creek, CA, 94596

Phone (925) 932-8100

Enumeration date Apr 24, 2018

Last updated in NPPES Apr 24, 2018

Taxonomy & classification

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name Diane Carpenter

Title Executive Director

Phone (925) 932-8100

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 type of organization is Alcohol and Drug Abuse Council of Contra Costa, Inc.?

Alcohol and Drug Abuse Council of Contra Costa, Inc. is registered in NPPES as a Addiction (Substance Use Disorder) Counselor (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-24.