Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew Curtis Solhjem, MD

Radiation Oncology Physician in Portland, OR · enumerated 2005.

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

National Provider Identifier

1356334403

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Registry record

Entity type Individual (Type 1)

Name Matthew Curtis Solhjem

Credential MD

Sex Male

Practice address 4805 Ne Glisan St, Garden Level, Portland, OR, 97213

Phone (503) 215-6029

Fax (503) 215-6387

Enumeration date Aug 24, 2005

Last updated in NPPES Dec 5, 2023

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License MD25755 (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
278060	Medicaid	OR	-
8419228	Medicaid	WA	-

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

Is NPI 1356334403 active?

Yes, as of the latest NPPES snapshot, NPI 1356334403 is active (record last updated 2023-12-05).

How do I verify Matthew Solhjem's NPI record?

Cross-check NPI 1356334403 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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John Zurasky Neurocritical Care Physician · Portland, OR NPI 1255337572 Jessica Hitchcock Child & Adolescent Psychiatry Physician · Portland, OR NPI 1477552305 Brendan Carroll Obstetrics & Gynecology Physician · Portland, OR NPI 1669472775 Brendan Curti Medical Oncology Physician · Portland, OR NPI 1861494650 Stephen Bader Radiation Oncology Physician · Portland, OR NPI 1790787422 Roxanne Griswold Family Nurse Practitioner · Portland, OR NPI 1205828936 John Handy Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Portland, OR NPI 1932191467 Paul Hansen Surgery Physician · Portland, OR NPI 1104818632

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-05.