About William Ares, MD

William Joseph Ares, MD, a neurosurgeon at Endeavor Health, specializes in treating complex neurological conditions involving the brain, spine and cerebrovascular system. He provides care for conditions such as brain tumors, cerebral aneurysms, chiari malformation, spinal stenosis and trigeminal neuralgia. He performs a wide range of procedures including aneurysm coiling, endovascular stroke treatment, microvascular decompression and minimally invasive spine surgery. Dr. Ares combines advanced surgical techniques with a comprehensive understanding of neurological disorders.

Overview

  • Languages English
  • Gender Male

Clinical focus

  • Brain Surgery (Neurosurgery)
  • Spine
  • Neurosurgery

Procedures performed

  • Brain surgery
  • Carotid artery stenting
  • Microdiscectomy
  • Complex spine reconstruction
  • Minimally-invasive spine surgery
  • Spinal fusion
  • Stereotactic neurosurgery and radiosurgery (SRS)
  • Angiogram
  • Craniotomy
  • Shunt
  • Stereotactic biopsy
  • Microvascular decompression
  • Laminectomy and laminoplasty
  • Aneurysm coiling
  • Arteriovenous malformation (AVM) embolization
  • Tumor embolization
  • Endovascular neurosurgery
  • Cerebrovascular neurosurgery
  • Brain and spine tumor surgery
  • Endovascular stroke treatment
  • Joint replacement of the spine
  • Spinal angiography
  • Kyphoplasty
  • Endoscopic skull base surgery
  • Endoscopy
  • Minimally-invasive spine techniques
  • Skull base surgery

Conditions treated

  • Stroke
  • Hydrocephalus
  • Brain tumor
  • Trigeminal neuralgia
  • Hemifacial spasm
  • Cerebral aneurysms
  • Spinal stenosis
  • Spine instability
  • Neurological disorders
  • Carotid stenosis
  • Carpal tunnel (CTS)
  • Chiari malformation
  • Degenerative spine disease
  • Intracerebral hemorrhage (ICH)
  • Radiculopathy
  • Subarachnoid hemorrhage (SAH)
  • Subdural hematoma (SDH)
  • Tumor in the central nervous system (brain or spine)
  • Thoracic
  • Lumbar
  • Meningioma
  • Cerebrospinal fluid (CSF) leak
  • Arterio-venous malformation (AVM)
  • Ruptured aneurysms
  • Cerebral cavernous malformations (ccms)
  • Arteriovenous fistula
  • Glossopharyngeal neuralgia
  • Epidural hematoma
  • Carotid dissection
  • Myelopathy
  • Moyamoya disease
  • Surgical disorders of the cervical and lumbar spine

Board specialties

  • Neurosurgery
Endeavor Health Medical Group
9600 Gross Point Rd., Suite 1200
Skokie, IL 60076-1214
Endeavor Health Medical Group
1000 Central St., Suite 880
Evanston, IL 60201-1780
Endeavor Health Medical Group
920 Milwaukee Ave., Suite 2100
Lincolnshire, IL 60069-3839
Endeavor Health Medical Group
3122 N. Ashland Ave.
Chicago, IL 60657-3014
Endeavor Health Medical Group
5115 N. Francisco Ave., Neurosciences Institute
Chicago, IL 60625-3611
Medical School
  • 2012
    University of Vermont College of Medicine
Residencies
  • 2019
    Neurosurgery
    University of Pittsburgh Medical Center
Fellowships
  • 2018
    Neuroendovascular
    University of Pittsburgh Medical Center
Board certifications
  • 2023
    Neurological Surgery
    American Board of Neurological Surgery
Reviews (24)
September 30, 2025
I really didn't need to see a spinal surgeon after all. However, Dr. Ares was vet accommodating and suggested that I continue my routine of exercise and diet to deal with my osteoporosis and spinal arthritis. He gave me the option of engaging in physical therapy if needed.
September 27, 2025
Dr. Ares has always been so wonderful. He explains everything in detail and is compassionate and makes me feel very comfortable. I am blessed to have him as my neurosurgeon and am very grateful for all he has done for me. I certainly feel that he gave me a new lease on life! I thank him from the bottom of my heart.
September 19, 2025
Was one of the best Dr I have dealt with.
September 19, 2025
Dr Ares and his team are top notch. Professional and clearly and patiently explained my health situation in understandable and reassuring terms.
September 3, 2025
This was a last-minute appointment due to the urgency of my case. Everyone from my endeavor GP to Dr. Ares staff handled it all with great professionalism and kindness.
September 3, 2025
I was very happy
September 1, 2025
Friendly, caring, incredibly competent and efficient, and on time! All healthcare professionals work in concert with each other and care about your experience in the office. I appreciate Dr. Ares and his team.
August 20, 2025
Caring and professional
August 13, 2025
He's great!
August 13, 2025
Dr Ares has a terrific Dr-patient demeanor. His explanations are in layman's terms-easy to understand, concise, and thorough. I greatly appreciate his ability to listen to my questions and concerns.
August 7, 2025
Excellent by
August 3, 2025
He was very clear in my condition.Now I got a better understanding. Very pleasant experience.
August 1, 2025
100% Dr. Aries compassion,understanding
July 31, 2025
Dr. Ares was extremely kind and helpful.
July 27, 2025
So very helpful! Very friendly and informative. Nurses are always amazing!!
July 25, 2025
It was a great experience and everyone was so kind and helpful.
July 24, 2025
Dr. Ares has my complete confidence as a surgeon.
July 22, 2025
Very accomodating
July 16, 2025
He was very understanding and very informative
July 12, 2025
Very knowledgeable and thorough w explanations. Impressive.
July 4, 2025
Felt very comfortable withm Dr Ares knowledge and abilities after his explanation of results from MRI. I had decided I didn't want surgery prior to my appt, but changed my mind after meeting Dr Ares and hearing his recommendrrations for my situation.
July 4, 2025
Excellent communication and service. I am so relieved to have a clear plan of action for my back issues.
July 2, 2025
Dr. Ares was respectful and addressed my concerns. I did not feel rushed. I have had a difficult time getting a diagnosis and was relieved to finally get answers to my questions after 10 years. Dr. Ares reviewed my surgical option should medical management fail.
July 2, 2025
I'm very happy with your service
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According to the Centers for Disease Control and Prevention, someone in the United States has a stroke every 40 seconds and every 3.5 minutes a person dies of stroke.