Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Eric J Dierks, MD, DMD

Oral & Maxillofacial Surgery (D.M.D.) in Portland, OR · enumerated 2005.

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

National Provider Identifier

1265432025

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Registry record

Entity type Individual (Type 1)

Name Eric J Dierks

Credential MD, DMD

Sex Male

Practice address 1849 Nw Kearney St, Portland, OR, 97209

Phone (503) 224-1371

Fax (503) 224-0722

Enumeration date Jul 22, 2005

Last updated in NPPES Jun 11, 2018

Taxonomy & licenses

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License D6708 (OR) Secondary

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License MD16391 (OR) 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
008560	Medicaid	OR	-

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

Is NPI 1265432025 active?

Yes, as of the latest NPPES snapshot, NPI 1265432025 is active (record last updated 2018-06-11).

How do I verify Eric Dierks's NPI record?

Cross-check NPI 1265432025 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-11.