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Cornerstone Primary Care Inc

Primary Care Clinic/Center in Walnut Creek, CA · enumerated 2015 · authorized official Anthony Bernens, Coo and Cfo.

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

National Provider Identifier

1528451523

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Registry record

Entity type Organization (Type 2)
Legal business name Cornerstone Primary Care Inc
Practice address 112 La Casa Via, Suite 135, Walnut Creek, CA, 94598
Phone (925) 378-4040
Fax (925) 300-4224
Enumeration date Mar 15, 2015
Last updated in NPPES Jun 3, 2015

Taxonomy & classification

261QP2300X Primary Care Clinic/Center Ambulatory Health Care Facilities · License FNP544411 (CA) Primary

Authorized official

Name Anthony Bernens
Title Coo and Cfo
Phone (925) 890-0415

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

What type of organization is Cornerstone Primary Care Inc?
Cornerstone Primary Care Inc is registered in NPPES as a Primary Care Clinic/Center (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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-03.