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

Oisin Ruadri O'Neill, MD

Individual provider Neurological Surgery Physician · NPI 1093701898

Oisin Ruadri O'Neill, MD is a Neurological Surgery Physician in Portland, Oregon. Works from 2 locations. Licensed in Oregon.

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

See every abbreviation used in this directory →

Practice location Address checks out

9155 SW Barnes Rd Ste 440
Portland, OR 97225-6625
Phone: (503) 297-3766
Fax: (503) 297-8148
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5050 Ne Hoyt St Ste 359, Portland, OR 97213-2983 — (503) 935-8501

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence MD 17954 (OR)

Record details

NPI number1093701898
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 27, 2005
Last updated in NPPESJanuary 2, 2020
Certification dateJanuary 2, 2020

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