John D. Nerva, MD

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Assistant Professor
Accepting New Patients

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Neurosciences – Froedtert Hospital Clinic 414-805-5400
Call for an appointment
Accepting New Patients
Call for an appointment
Neurosciences – Froedtert Hospital Clinic 414-805-5400

Neurosurgeons often see patients after receiving troubling and confusing news or after a life changing event like a stroke, brain hemorrhage or traumatic injury. It is an absolute honor and privilege to help patients and their families during this time of need. I want patients to understand their condition, the available treatment options and what are the potential outcomes of therapy. My priorities are to carefully explain and counsel patients and families about the condition and to offer the safest approach to address the problem. I also enjoy hearing the patient's perspective and learning about what matters most to them. As a vascular neurosurgeon, I offer a comprehensive approach for the evaluation and management of cerebrovascular and spinal vascular disease, which may include medical therapy, open microsurgery, endovascular techniques, and radiosurgery. Neurosurgery is a constantly evolving field, and my goal is to combine the newest treatment advances with compassionate patient care.

Neurosurgeons often see patients after receiving troubling and confusing news or after a life changing event like a stroke, brain hemorrhage or traumatic injury. It is an absolute honor and privilege…
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John D. Nerva, MD is a fellowship trained, board-certified neurosurgeon who joined the faculty of the Medical College of Wisconsin in 2021. He specializes in the treatment of cerebrovascular and spinal vascular disease and is part of a select group of neurosurgeons with fellowship training in both open vascular microsurgery and endovascular techniques for the treatment of brain aneurysms, vascular malformations, and stroke. He also collaborates with radiation oncology to perform stereotactic radiosurgery for select vascular malformations at Froedtert-MCW.

Dr. Nerva grew up in Minnesota and graduated summa cum laude from the University of Minnesota. He also attended the University of Minnesota for medical school graduating with Alpha Omega Alpha honors. He completed neurosurgery residency at the University of Washington, during which time he also completed cerebrovascular fellowship training at Macquarie University in Australia. After residency, he received advanced training in minimally invasive endovascular techniques at the University of Florida. Prior to joining MCW, he was on the faculty at Tulane University in New Orleans.

Dr. Nerva's clinical research relates to patient outcomes and refinements of surgical and endovascular techniques for cerebrovascular disease. He has authored over 100 manuscripts, abstracts, book chapters, and presentations, including several at national and international meetings, and has served as key personnel on NIH/NINDS funded research studying computer simulations of brain aneurysm treatment. He is also recognized as a reviewer for several marquee peer-reviewed neurosurgical journals and has been invited to teach at regional and national neurosurgical courses.


Treatment & Services

Carotid Endarterectomy
Carotid Stenting
Conservative Therapy
Endovascular Neurosurgery
Gamma Knife Surgery
Minimally Invasive Neurosurgery
Open Vascular Neurosurgery
Skull Base Surgery

Diseases & Conditions

Arteriovenous Malformations (AVM's)
Brain Tumors
Carotid Cavernous Fistula (CCF)
Carotid Stenosis
Cavernous Malformations
Cerebral Aneurysms
Dural Arteriovenous Fistulas
Intracranial Stenosis
Spinal Arteriovenous Malformation
Subdural Hematoma

Ages Seen


Languages Spoken


Hospital Affiliations

Froedtert Hospital


Neuroscience Center – Specialty Clinics

Education & Training

University of Minnesota - Minneapolis - Doctor of Medicine - (2010)

University of Washington School of Medicine - Seattle - Residency in Neurological Surgery - (2010-2017)

Macquarie University - Sydney - Australia - Fellowship in Cerebrovascular Neurosurgery - (2016)

University of Florida - Gainesville - Fellowship in Endovascular Neurosurgery - (2017-2018)

Board Certifications


Patient Reviews

The comments are submitted by patients (or their caregivers) and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of the Froedtert & the Medical College of Wisconsin health network. Learn more about our survey.*


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Dr Nerva explains everything very well and makes sure you ask any questions I had. His NP is equally professional and approachable.
Dr Nerva was very thorough and authentic. He explained everything very completely. I feel that I am in very competent hands.
Everyone from check in to check out was wonderful.
Wonderful staff and service. Everything was explained in easy to understand terms. The doctor listened and showed real concern.
Dr Nerva took lots of time to explain every detail of my upcoming procedure. I do trust. This doctor would not hesitate to recommend him to anyone.
Nice people and tremendously helpful. Doctor and nurse practitioner were very knowledgeable and made me feel at ease.
Very nice staff. Clean facility. And I received great written directions to the hospital prior to my appointment. Appointment reminder nice job of letting out what would happen at the appointment and told me what to bring with. I really appreciate that.
I had an excellent experience at my appointment. I was seen on time, had all my questions answered, and did not feel rushed in the slightest. I very much appreciate the excellent care and explanations.
They actually were very good and caring. And took time discussing thing to me
Dr. Nerva saved mine and my daughters life he has from the moment we met shown nothing but concern and respect for my health and my family
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