Reza J. Karimi
MD, FAANS, FACS

Doctor's Biography

Dr. Karimi is widely recognized as a leading expert in complex brain and spine disorders, drawing patients from across the U.S. and New Jersey seeking his specialized care. His unique expertise includes advanced fellowship training in both microvascular and endovascular neurosurgery, allowing him to perform highly intricate procedures with microscopic precision. Dr. Karimi specializes in developing and performing cutting-edge techniques for brain aneurysms, vascular malformations (AVM), cavernous malformations, vascular tumors, Chiari malformation, CSF leak, pseudotumor cerebri, hydrocephalus and neurotrauma. Dr. Karimi is regarded as a seasoned expert in the field and his patient referrals are often from other neurosurgeons.

Dr. Karimi holds several key leadership positions at Hackensack University Medical Center, including serving as the Chief of Vascular Neurosurgery, Director of Neurosurgical Trauma and Critical Care, and co-Director of Cerebrovascular Diseases. His patient-centric philosophy emphasizes non-surgical options whenever feasible, ensuring the safest and most effective treatments are always tailored to each patient’s specific needs.

Dr Karimi’s commitment to innovation and patient care underscores his role as a leader in advancing the field of neurosurgery. He continues to lead clinical trials, FDA device trials and serves as an Assistant Professor of Neurosurgery at Hackensack Meridian School of Medicine. He is the author of numerous peer-reviewed research articles and textbook chapters. Additionally, he plays a pivotal role as an educator including mentoring the next generation of medical students, residents and fellows. Dr. Karimi presents and lectures nationally, including his role as an instructor at the American Association of Neurological Surgery (AANS) Goodman Board certification course. His research interests span cerebrovascular and endovascular neurosurgery, neurocritical care, neurosurgical anatomy and intracranial aneurysm flow dynamics. Dr. Karimi’s commitment to innovation and patient care underscores his role as a leader in advancing the field of neurosurgery.

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Kim C.

Dr. Karimi has always made me feel comfortable that I am in the hands of an expert who truly cares. I consider myself very fortunate that he wound up performing the procedures to repair my brain aneurysm, as it was an emergency situation and he was the surgeon on call. I would not hesitate to recommend him.

Geraldine M.

What an amazing doctor. Fantastic bedside manner. You leave the office. Feeling 100% confident that all is going to be well..
Also, Ramona, who is the person that schedules for him for surgery. Is amazing !
I highly recommend his office staff

Kimyada O.

Very thorough. Explained in detail what the problem could be. Also explained what needed to be done to get 100% diagnosis. Happy he was recommended by Dr. Kaptain. Looking forward to working closely with him.

E V.

Excelente Doctor,

Leonard P.

Dr Karimi is extremely thorough, professional and interested in getting you well. In addition, he performed surgery on my father and saved him from paralysis. I HIGHLY recommend him!!

Fran T.

My husband and I met Dr. Karimi this past Thursday. The office of NJ Brain & Spine is very lovely and modern. And the staff couldn’t be any more helpful and friendly. Dr. Karimi explained my pretty serious medical condition in detail, answered all our questions, and after a further test he ordered, explained every possibility moving forward. I feel complete trust in him, and feel I will have the best outcome in his care. Thank you Doctor Karimi.

Claudia Arechabala Y.

Excellent provider

Kim R.

New location is amazing! Dr. Karimi continues to be extremely transparent in the most caring way. Completely trust his diagnosis and health plan.

Sandra D.

Excelente profesional, Excelente persona.Gracias Gracias Dios lo siga Bendiciendo.☺️

Christina M.

I had a very informative visit with Dr. Karimi. He took his time explaining things to me. I highly recommend Dr. Karimi :))))