Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Thomas A Onstad, MD

Individual provider Specialist · NPI 1639155773

Dr. Thomas A Onstad, MD is a Specialist in Eugene, Oregon. Licensed in Oregon. Registered with an NPI since 2005.

Licensed in
OR
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

923 Country Club Rd Ste 100
Eugene, OR 97401-2296
Phone: (541) 343-1629
Fax: (541) 485-5944
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Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence MD07372 (OR)

Record details

NPI number1639155773
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 20, 2005
Last updated in NPPESJuly 13, 2026
Mailing address923 Country Club Rd, Suite 100, Eugene, OR 97401-2296

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