Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Cornerstone Primary Care, Pllc

Health Service Clinic/Center in Renton, WA · enumerated 2015 · authorized official John Mayeno, Member.

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

National Provider Identifier

1841681707

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Cornerstone Primary Care, Pllc

Practice address 17900 Talbot Rd S Ste 102, Renton, WA, 98055

Phone (425) 255-9310

Enumeration date Feb 13, 2015

Last updated in NPPES Dec 30, 2015

Taxonomy & classification

261QH0100X Health Service Clinic/Center Ambulatory Health Care Facilities · License MD 00023599 (WA) Primary

Authorized official

Name John Mayeno

Title Member

Phone (425) 255-9310

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2015-12-30. Verify at npiregistry.cms.hhs.gov.

Where is Cornerstone Primary Care, Pllc located?

The practice location on file with NPPES is in Renton, WA.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-30.