Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Matthew John Arentz, MD

Pulmonary Disease Physician in Kirkland, WA · enumerated 2006.

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

National Provider Identifier

1154362838

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Registry record

Entity type Individual (Type 1)

Name Matthew John Arentz

Credential MD

Sex Male

Practice address Kirkland, WA, 98034

Phone (425) 899-6972

Fax (425) 899-6970

Enumeration date Jun 10, 2006

Last updated in NPPES Oct 19, 2018

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD00044858 (WA) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License MD00044858 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
8431413	Medicaid	WA	-
2515AR	Other	WA	BSWA
6251AR	Other	WA	BSWA
0200021	Other	WA	LIWA
0203057	Other	WA	LIWA

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

How do I verify Matthew Arentz's NPI record?

Cross-check NPI 1154362838 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1154362838 active?

Yes, as of the latest NPPES snapshot, NPI 1154362838 is active (record last updated 2018-10-19).

Other providers at this practice address

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Diane Dozois Hospice and Palliative Medicine (Family Medicine) Physician · Kirkland, WA NPI 1578660254 Moira Opalka Family Nurse Practitioner · Kirkland, WA NPI 1316015381 Yoon Hee Chang Sleep Medicine (Internal Medicine) Physician · Kirkland, WA NPI 1023294311 David Wenger Internal Medicine Physician · Kirkland, WA NPI 1386919686 Lindsey Foley Acute Care Nurse Practitioner · Kirkland, WA NPI 1376108688 Gagandeep Bath Family Nurse Practitioner · Kirkland, WA NPI 1245007731

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-19.