Omar Arnaout, MD
Brain Tumor & Skull Base Neurosurgeon in Boston — personalized, relationship-driven care for brain tumors and complex neurological conditions.
Boston Neurosurgery
Advanced brain surgery, delivered with compassion
Dr. Omar Arnaout is a nationally recognized brain tumor and skull base surgeon — the J.K. Irving Family Endowed Chair in Neurosurgical Oncology at Mass General Brigham and an Associate Professor at Harvard Medical School. He specializes in minimally invasive, keyhole, and endoscopic approaches — and in building the long-term relationships that lead to the best outcomes.
What we treat
Areas of Clinical Expertise
- Primary Brain Tumors
- Glioma
- Glioblastoma
- Metastatic Brain Tumors
- Pituitary Tumors
- Meningiomas
- Awake Craniotomy
- Vestibular Schwannoma (Acoustic Neuroma)
- Minimally Invasive Tumor Surgery (Keyhole)
- Endoscopic Skull Base Surgery
- Microvascular Decompression
- Trigeminal Neuralgia
- Hemifacial Spasm
About
A surgeon focused on the person, not just the procedure
“The field of neurosurgery is not about the procedures but rather the long-term relationships I build with my patients.” Dr. Arnaout often meets with patients several times before discussing surgery, and stays closely involved throughout recovery — for surgical and non-surgical patients alike.
“The brain is the last and grandest biological frontier, the most complex thing we have yet discovered in our universe.”— James Watson
Patient Stories
What people are saying
He is consistently informative, caring and compassionate. I think he is very skilled in his field. I would highly recommend him and I am very thankful I am his patient.
— May 2026
I was pleasantly surprised at the personal experience I had from a big hospital in a big city. Very professional and compassionate as well.
— May 2026
Wonderful doctor. Listened to me and explained all my options in great detail.
— April 2026
Request a consultation
Have questions or want a second opinion? Reach out and Dr. Arnaout’s team will help you take the next step.