Dr. Oisin O'Neill, MD

Dr. Oisin O'Neill, MD

Neurosurgery  ·  
Male  ·  
Age 59
Dr. Oisin O'Neill, MD is a neurosurgery specialist in Portland, OR and has been practicing for 25 years. He graduated from Royal College of Surgeons In Ireland / Medical School in 1985 and specializes in neurosurgery.Read his story

5050 NE Hoyt St Ste 359

Portland, OR 97213

Contact Information

(503) 935-8501

Insurance Accepted

  • Aetna
  • Assurant Health
  • AvMed
  • Blue Cross Blue Shield
  • Cigna
  • Commercial Insurance Company
  • Coventry Health Care
  • First Choice Health
  • Harvard Pilgrim Health Care
  • 11 More

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Learn about Dr. O'Neill

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. O'Neill performs your care needs compared to other doctors.

Radiculopathy (Not Due to Disc Displacement)
very high
more than 93% of peers
Low Back Pain
very high
more than 91% of peers
more than 77% of peers

Dr. O'Neill's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

Dr. O'Neill's bio

This content was provided by Dr. O'Neill "Dr. O'Neill is a board certified neurosurgeon in the United States as well as in the European Union. He completed his medical training at the Royal College of Surgeons in 1985 and his neurosurgery training started in Richmond and Beaumont hospitals in Dublin, Ireland. In 1988, Dr. O'Neill and his family immigrated to the United States where he received neurosurgery training at the University of Washington and at Oregon Health & Sciences University. In 1991 he was examined and admitted as a Fellow of the Royal College of Surgeons in Ireland. Dr. O'Neill's particular interests are in the treatment of brain tumors, stereotactic radiosurgery, and in the surgical treatment of the vascular pathology of the brain."

Care Philosophy

This content was provided by Dr. O'Neill "I would treat all my patients in a manner similar to how I would treat my family members."

1  Specialties

  • Neurosurgery

1  Board Certifications

  • Neurosurgery
    Accredited by: American Board of Neurological Surgery*

52  Conditions Treated

  • Acoustic Neuroma
  • Aneurysm
  • Bone Disorders
  • Brain and Nervous System Cancer (incl. Gliomas, Astrocytoma, Schwannoma, Medulloblastoma, Chordoma)
  • Brain Aneurysm
  • Brain Cancer
  • Brain Disorders
  • Broken Neck
  • Cancer
  • Cauda Equina Syndrome
  • Cerebral Artery Thrombosis
  • Cerebral Hemorrhage
  • Cerebrospinal Fluid Leak (CSF Leak)
  • Cerebrovascular Disease
  • Cervical Spine Myelopathy
  • Chiari's Deformity
  • Degenerative Disc Disease
  • Ear Disorders
  • Epilepsy
  • Fracture
  • Herniated Disc
  • Hydrocephalus
  • Idiopathic Intracranial Hypertension
  • Intervertebral Disc Disease
  • Low Back Pain
  • Lumbar Spine Fracture
  • Meningiomas
  • Myelopathy
  • Nerve Sheath Tumors
  • Normal Pressure Hydrocephalus
  • Pathological Spine Fracture
  • Post-Laminectomy Syndrome
  • Radiculopathy (Not Due to Disc Displacement)
  • Scoliosis
  • Secondary Malignancies
  • Spina Bifida
  • Spinal Cord Injury
  • Spinal Cord Tumor
  • Spinal Stenosis
  • Spine Deformities
  • Spine Disorders
  • Spine Fractures, Traumatic
  • Spondylolisthesis
  • Spondylosis
  • Stroke
  • Subarachnoid Hemorrhage
  • Subdural Hemorrhage
  • Thoracic Spine Fracture
  • Thoracic Spine Myelopathy
  • Thrombosis
  • Traumatic Brain Injury
  • Vascular Disease
Read Less

18  Procedures

Background Check

0 Malpractice Claims

No malpractice history found for Oregon.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Royal College of Surgeons In Ireland / Medical School
    Medical School | Graduated 1985
  • University of Washington
    Residency Hospital | Completed 1988
  • Ohsu Hospital and Clinics
    Internship Hospital | Completed 1989
  • Royal College Of Surgeons
    Fellowship Hospital | Completed 1991
  • Oregon Health & Science University
    Fellowship Hospital | Completed 1993
  • Oregon Health & Science University
    Residency Hospital | Completed 1994

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. O'Neill has no media or publications listed.

Languages Spoken

  • French
  • English

Memberships & Professional Affiliations

Dr. O'Neill does not have any memberships or affiliations listed. If you are Dr. O'Neill and would like to add memberships or affiliations, please update your profile.

Dr. O'Neill's Reviews

Likelihood to recommend Dr. O'Neill


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Average Wait Time
  • 10 – 15 minutes
Dr. O'Neill's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Oisin O'Neill, MD
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I went to Dr. O'Neill for a second opinion and I left the office feeling confident that I was in the right hands. He went through the details of my condition and told me my options with as much time as needed for questions. He only had to look at me to see what was wrong, not even I noticed that...Read More
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HIs office scheduler is rude, unprofessional, and borders on incompetent.
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Update! 2 years later I found another surgeon that has stated that I didn't fuse with bone at all since my surgery!!! If this office cared at all they would have looked harder as to why a very healthy young woman was having these issues vs. only caring about their own egos! I'm 2 years after...Read More
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Hello Ashley, we're concerned about your recent...Read More
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Dr. O'Neill basically saved my life, operating as a Neurosurgeon in the Emergency Room of Providence-St. Vincent Hospital this past month for a subdural hematoma of the brain; he is the very archetype of a professional, compassionate Neurosurgeon as is his Assistant Allison; my wife and I are...Read More
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Thank you and glad to help
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I had a wonderful experience with Dr. O'Neill. It was hard to get in to see him, but it was worth the wait. He had reviewed my MRI before the appt. and asked questions during the exam. After the exam, he reviewed the MRI with me, level by level. He outlined several approaches and was clear about...Read More
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Good. Thank you
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