Tri-Cities

Tri-Cities is a healthcare organization registered as Counselor in Oakland, CA, holding Type 2 (organization) NPI 1164636254 since 2007. The authorized official on file is Robert Mason, Registered Addiction Specialist.

✓ Active NPI ✓ Valid NPI checksum

NPI	1164636254
Entity type	Organization (Type 2)
Legal business name	Tri-Cities
Practice address	765 MACARTHUR BLVD APT H, Oakland, CA, 94610
Phone	5108935817
Enumeration date	2007-05-09
Last updated in NPPES	2008-07-23

Authorized official

Name	Robert Mason
Title	Registered Addiction Specialist
Phone	5103747011

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
101Y00000X	Counselor	Primary	M0501041642	CA

Copy-ready billing details

Provider: Tri-Cities
NPI: 1164636254
Taxonomy: 101Y00000X (Counselor)
Address: 765 MACARTHUR BLVD APT H, Oakland, CA, 94610

Verify this record

Cross-check NPI 1164636254 against the authoritative CMS record: view Tri-Cities on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where is Tri-Cities located?

The practice location on file with NPPES is in Oakland, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-07-23. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-07-23.