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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Patrick Marshall Dunn, M.D.

Internal Medicine Physician in Portland, OR · enumerated 2006 · practices at Legacy Clinics LLC.

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

National Provider Identifier

1669447231

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Registry record

Entity type Individual (Type 1)
Name Dr. Patrick Marshall Dunn
Credential M.D.
Sex Male
Practice address 1130 Nw 22nd Ave Ste 220, Portland, OR, 97210
Phone (503) 413-8988
Enumeration date Feb 17, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 12329 (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
280180 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

Where does Patrick Dunn practice?
The practice location on file with NPPES is in Portland, OR. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Patrick Dunn?
The National Provider Identifier (NPI) for Patrick Dunn is 1669447231, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.