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
- Gender Male
Conditions treated (32)
- 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
Procedures performed (27)
- 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
-
Endeavor Health Medical Group
920 Milwaukee Ave., Suite 2100 Lincolnshire, IL 60069-3839 -
Endeavor Health Medical Group
5115 N. Francisco Ave., Neurosciences Institute Chicago, IL 60625-3611 -
Endeavor Health Medical Group
1000 Central St., Suite 880 Evanston, IL 60201-1780 -
Endeavor Health Medical Group
3122 N. Ashland Ave. Chicago, IL 60657-3014 -
Endeavor Health Medical Group
9600 Gross Point Rd., Suite 1200 Skokie, IL 60076-1214
Medical School
-
2012University of Vermont College of Medicine
Residencies
-
2019NeurosurgeryUniversity of Pittsburgh Medical Center
Fellowships
-
2018NeuroendovascularUniversity of Pittsburgh Medical Center
Board certifications
-
2023Neurological SurgeryAmerican Board of Neurological Surgery
Professional title
-
Clinical Assistant Professor, The University of Chicago Pritzker School of Medicine
Reviews (94)
March 24, 2026
Care team was extremely helpful. Doctor was professional, kind and easy to talk to.
March 20, 2026
Dr William AresHis very friendly,was comfortable During my visit
March 13, 2026
Very good atmosphere and great care . Thank you !
March 12, 2026
Dr. Ares took time to explain to me his opinion and answer my questions.
March 8, 2026
My experience with Dr. Ares and the rest of the neuro staff has been incredible! Dr. Ares and all that work with him are caring, excellent listeners, readily available, and very helpful. After I had neurosurgery, I knew I was in great hands.
March 6, 2026
He seemed a little rushed, but care was excellent. I trust his expertise, and he was very personable and helpful.
March 5, 2026
Very knowledgeable and professional.
March 4, 2026
Dr Ares has been wonderful as my neurosurgeon. He completed two serious, successful procedures on me. He is obviously an excellent doctor and an expert in his field. What impressed me the most is bedside manner and overall personality. He easily answered all my questions and calmed my nerves from the start. I highly recommend Dr Ares and his staff.
March 2, 2026
Excellent care team
March 1, 2026
Dr. Ares is an excellent doctor and listener too.
February 25, 2026
Very attentive and knowledgeable about my case and finding solutions to help improve my quality of life.
February 25, 2026
Dr Ares was clear and concise in his explanation of my condition. He asked question and answered all of my questions. He was outstanding and if his medical expertise is needed I will see him again.
February 20, 2026
Very friendly, supportive and kind
February 18, 2026
Unfortunately my wife drove us to Glenbrook Hosp first b/c we've had to go there so often over the last few weeks for various appts. We called your office at Skokie Host Spinal Institute. The nurse said if we could come quickly, your office could still give us an appt. We made it in 19 minutes and were so appreciative of your accommodation b/c we're nervous these days, trying to get to the bottom of things.
February 17, 2026
No complains everything profesional
February 7, 2026
I was very comfortable with Dr. Ares. I understood everything and he is clearly very skilled with my issue. I felt very comfortable going with his recommendation
February 7, 2026
Very efficient, very warm and supporting. Great visit!
February 6, 2026
Dr. Ares was very friendly and nice. He answered my questions and put me at ease.
January 28, 2026
Dr. Ares was was friendly, very knowledgeable and thorough. My visit with him was excellent
January 23, 2026
His office helped me set up a very timely appointment! I was so impressed
January 22, 2026
Dr Ares got right to the point, which I appreciated. Prepared and organized.
January 9, 2026
Dr. Ares arrived without delay, had reviewed my record and provided exactly the evaluation I needed. He offered his advice clearly and indicated availability for future consultation. Our visit was less than ten minutes; no physical exam
January 1, 2026
He took the time to make sure all my questions were answered.
December 19, 2025
Dr Ares, best doctor I've ever met
December 6, 2025
Very personable!
December 5, 2025
Nice that the doctor was knowledgeable about my situation even on the first visit
December 3, 2025
Dr. Willian Ares is the best, excellent surgeon
November 25, 2025
Great bedside manners and all were attentive to my needs! The staff at Dr. Ares were kind and informative!
November 20, 2025
My providers have all been excellent. My biggest complaint was the scheduling of appointments that my Doctors referred me to. […]
November 18, 2025
Excellent attention from the first staff member encounter to the last one -- much appreciated
November 15, 2025
He took the time to answer my questions in an easy way to understand.
November 14, 2025
Kind and caring
November 14, 2025
He tried to help beyond but couldn't. He seems to know his area of expertise
November 12, 2025
The office is very synchronized.
November 9, 2025
Dr. Ares is First Rate, The Best.
November 9, 2025
Excellent and very kind Doctor.
October 28, 2025
My questions are always answered promptly when I need to leave a message & receive a call back. Staff are very polite and knowledgeable. I had a good comfort level with the staff & Dr. Ayers. I felt confident with Dr Ayers ability ,upon meeting him the first time.
October 9, 2025
Barely got 5 minutes with the guy and he acted rushed.
October 3, 2025
Everyone was helpful and did their job in a friendly and caring manner.
October 3, 2025
I trust Dr William Ares 100%
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
I'm very happy with your service
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.
June 19, 2025
Excellent presentation
June 15, 2025
I felt that all my questions were answered by the doctor and his staff
June 10, 2025
Dr. Ares is wonderful. I'm so blessed and grateful to have him as my doctor.
May 11, 2025
Experience was positive from start through the timing of the followup appointments and personnel at every location.
May 8, 2025
Wonderful when present
May 5, 2025
Dr Ares is a nice and knowledgeable doctor, and the staff is very kind
April 25, 2025
Dr. Ares was very good.Excellent bedside manner & very professional.
April 24, 2025
Extremely helpfully
April 22, 2025
I feel I am in talented hands
April 18, 2025
Dr. Ares was very thorough in explaining the procedure and listened to my concerns and answered all questions to our satisfaction. His staff was also very nice and professional.
April 18, 2025
Thank you!
April 15, 2025
Dr. Ares Is an amazing Doctor!! Great bedside manner.
April 9, 2025
Thorough presentaci?n of diagnosis, trestment ?ptiions, success estimste, and follow up steps
April 2, 2025
Dr. Ares is a very special physician. He still relates to his patients, like most physicians used to. He listens, presents his diagnosis and treatment suggestions, answers all questions and is warm and caring throughout. I have, and will continue to, recommend him highly.
March 27, 2025
Dr. Ares and his team are extremely professional and caring. I truly felt welcomed and received a comprehensible explanation about the issue with my spine while viewing the xrays.
March 21, 2025
So impressed with all care and desire to ease my pains
March 19, 2025
Great bed side manner, one of the best doctors I have ever had with explaining every aspect of care
March 9, 2025
Dr. Ares and his staff are the absolute best! They really get to know you and care about you.
March 7, 2025
Care provider was excellent!!!
February 22, 2025
Dr. Ares is a kind and caring person.
February 18, 2025
Dr. Ares Is not only a nice and caring doctor but also an excellent surgeon. My surgery was a success because my back and legs pain are gone. Thank you you so much Dr. Ares for making me feel better.
February 1, 2025
Complete helpful info. Got me a rush referral
January 30, 2025
Dr. Ares was amazing. I was very nervous and concerned about the findings of the MRA. He put my mind at ease and I felt comfortable with the next plan on action regarding my health.
January 28, 2025
I received outstanding care from Dr. Ares and his team.
January 15, 2025
Outstanding neurosurgeon. Explains procedures clearly. Is attentive and puts patient at ease. Good sense of humor.
January 14, 2025
Dr. Ares was very kind, explained my situation clearly, and was very reassuring.
January 11, 2025
Very experienced and easy to understand
January 7, 2025
Excellent
January 7, 2025
100% Recommend
January 3, 2025
Dr Ares and the other staff I interacted with (receptionist, nurse) were great - Friendly, efficient
To find out if this healthcare professional accepts your insurance plan, it is important to verify coverage with your health insurance company. Verify your coverage by either calling the number on your insurance card or confirming coverage through your insurance company's web site or mobile app.
Pharmaceutical, device, and biotechnology companies frequently collaborate with research scientists and physicians to help advance scientific knowledge and improve patient care. These relationships can support scientific breakthroughs and help establish the effectiveness and safety of promising new therapies.
To ensure objectivity in clinical research and patient care, Endeavor Health maintains integrity policies requiring researchers and clinicians — whether in full-time, part-time and unpaid or voluntary roles — to disclose compensated and uncompensated relationships with external industry organizations.
Patients are encouraged to discuss these relationships with their physician as well as to inquire as to how these relationships are overseen by Endeavor Health. Learn more about our Conflict of Interest and Commitment Policy.
Additionally, patients can visit the Centers for Medicare & Medicaid Services (CMS) Open Payments website, a national disclosure program that promotes a more transparent and accountable healthcare system. It houses a publicly accessible database of payments that reporting entities — including pharmaceutical, device, and biotechnology companies — make to covered recipients such as physicians and hospitals.
CMS is required by law to publish this data annually on or before June 30 for the previous reporting year. The data is published annually, so it may not reflect the most recent reporting period. If you have questions about the information, talk with your physician.
Endeavor Health and its hospitals make this provider profile available to inform patients and support their selection of a care provider.
More about William
Article
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…
