Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MATTHEW S. CLEGG D.D.S., M.S.
NPI 1336122118
Dentist - Endodontics in Clarkston, WA

Q: What is Matthew Clegg's NPI number?

The NPI number for Matthew Clegg is 1336122118. It was assigned to this individual provider in the NPPES registry on November 25, 2005.

Q: What is Matthew Clegg's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Endodontics, with taxonomy code 1223E0200X.

Q: When was this NPI record last updated?

The NPPES record for Matthew Clegg was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 25, 2005PECOS Enrolled

802 7TH ST, CLARKSTON, WA 99403(509) 758-4181(509) 758-4756 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

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About Dr. Matthew S. Clegg D.d.s., M.s. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MATTHEW S. CLEGG D.D.S., M.S. (NPI 1336122118) is an individual endodontics provider in Clarkston, Washington, licensed in Washington (DE00010180) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1336122118

Entity TypeIndividualMale

Primary Taxonomy1223E0200X

Provider Legal NameDR. MATTHEW S. CLEGGCredential: D.D.S., M.S.

Location Address802 7TH STClarkston, WA 99403-2022

Mailing Address802 7th StClarkston, WA 99403-2022 · (509) 758-4181 · Fax (509) 758-4756

Phone(509) 758-4181

Fax(509) 758-4756

Sole ProprietorNo

Enumeration DateNovember 25, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1336122118 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · EndodonticsDental Providers

Taxonomy Code1223E0200X

License✔ Licensed in WA · DE00010180

Definition

The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions.

802 7TH ST, Clarkston, WA 99403

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Other Identifiers 1

Other602 510 100WA · Unified Business Ident.

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Matthew S. Clegg D.d.s., M.s. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 99403 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$88.29 typical visit price

range $57.27 – $172.80

Typical copayment $22.07 (range $14.31 – $43.20)

Most-billed visit code 99203

Established Patient

$71.29 typical visit price

range $18.56 – $141.11

Typical copayment $17.82 (range $4.64 – $35.27)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CLEARWATER ENDODONTICS, P.L.L.C.

Dentist (Endodontics)

802 7TH ST
CLARKSTON, WA 99403

Asotin County (509) 758-4181

MATTHEW S. CLEGG, DDS, MS, P.S.

Dentist (Endodontics)

802 7TH ST
CLARKSTON, WA 99403

Asotin County (509) 758-4181

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Matthew Clegg's NPI number?

The NPI number for Matthew Clegg is 1336122118. It was assigned to this individual provider in the NPPES registry on November 25, 2005.

Where is Matthew Clegg located?

Matthew Clegg practices at 802 7th St, Clarkston, WA 99403. The listed phone number is (509) 758-4181.

What is Matthew Clegg's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Endodontics, with taxonomy code 1223E0200X.

Is Matthew Clegg enrolled in Medicare?

Yes. Matthew Clegg is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Matthew Clegg was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.