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Cornerstone Medical Clinic

Internal Medicine Physician in Sumner, WA · enumerated 2010 · authorized official Lorinda Marceaux, Manager.

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

National Provider Identifier

1235460676

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Registry record

Entity type Organization (Type 2)
Legal business name Cornerstone Medical Clinic
Practice address 1420 Main St, Sumner, WA, 98390
Phone (253) 987-5156
Fax (253) 987-5462
Enumeration date Jan 25, 2010
Last updated in NPPES Jan 25, 2010

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD00036169 (WA) Primary

Authorized official

Name Lorinda Marceaux
Title Manager
Phone (253) 241-3401

Other identifiers

Identifier Type State Issuer
98390A015 Other WA TRICARE
9869DA Other WA REGENCE RIDER
8232878 Medicaid WA -
911203494BP Other WA KPS
0185591 Other WA L & I
5496722 Other WA AETNA

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 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.
What type of organization is Cornerstone Medical Clinic?
Cornerstone Medical Clinic is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-25.