Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Madder, Barney, Dmd, Pllc

Dental Clinic/Center in Kennewick, WA · enumerated 2010 · authorized official Nathan Madder, Dentist.

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

National Provider Identifier

1942510029

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Registry record

Entity type Organization (Type 2)

Legal business name Madder, Barney, Dmd, Pllc

Other name <Unavail>

Practice address 9501 W Clearwater Ave, Ste A120, Kennewick, WA, 99336

Phone (509) 374-4077

Enumeration date Oct 7, 2010

Last updated in NPPES Oct 9, 2018

Taxonomy & classification

1223G0001X General Practice Dentistry Dental Providers · License DE00010244 (WA) Secondary

261QD0000X Dental Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Nathan Madder

Title Dentist

Phone (509) 374-4077

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 2018-10-09. Verify at npiregistry.cms.hhs.gov.

Where is Madder, Barney, Dmd, Pllc located?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-09.