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Neurological Surgery

image of organic brain

Neurosurgery is a surgical specialty involving the operative and non-operative management of various disorders affecting the brain, spinal cord and nervous system. Our complex program encompass brain tumors, neurovascular diseases, functional disorders, pain, trauma and other complex conditions requiring neurosurgical intervention for adults. We offer the full spectrum of treatment options and are developing promising protocols for neurological diseases that are extremely difficult to treat with conventional therapies.

Advanced Neuroscience Network Physicians’ neurosurgeons treat the full range of conditions affecting the brain, spinal cord and nerves. We offer adults medical and surgical care for:

  • Brain and Pituitary Tumors, Including Endoscopic Approaches
  • Cerebral Vascular Aneurysm and AV Malformation
  • Complex Spine Revision Surgery and Instrumented Reconstruction
  • Cranial and Spinal Trauma
  • Epilepsy
  • Navigated Brain Tumor Resection and Radio Surgery (Gamma Knife, Cyber Knife, Edge)
  • Normal Pressure Hydrocephalus (Shunts)
  • Pain Management
  • Peripheral Nerve
  • Revision Spine Surgery
  • Spinal Deformity Correction/Scoliosis
  • Spine-Tumors and Degenerative Pathology, including Complex and Minimally Invasive Approaches
  • Vagal Nerve Stimulation and Mapping/Resection of Epileptogenic Foci

Meet Our Doctors

Dr. Jack Klem is the Medical Director of Neurosurgery at North Shore Medical Center in Miami and is also on staff at Florida Medical Center, a campus of North Shore in Fort Lauderdale. Dr. Klem sees patients in his offices in Miami and Kendall.

For his education and training, Dr. Klem completed his residency in neurological surgery and an internship in general surgery at Thomas Jefferson University Hospital in Philadelphia. Dr. Klem graduated medical school from The Johns Hopkins University School of Medicine in Baltimore. Prior to attending medical school, Dr. Klem received a Master of Science in Biomedical Engineering at the University of Pennsylvania and graduated from The Wharton School of Business with a Bachelor of Science in Economics, majoring in Finance.

Upon arrival to South Florida, Dr. Klem served as Medical Director in Vascular Neurosurgery and Clinical Assistant Professor in the Department of Surgery at Florida International University (FIU).

Dr. Jessica Okun was the administrative chief neurological surgery resident of the Philadelphia College of Osteopathic Medicine (PCOM). Dr. Okun specializes in brain and pituitary tumors, epilepsy surgery, including endoscopic approaches as well as cranial and spine trauma, degenerative spinal pathology, including minimally invasive and complex approaches. She is on staff at Florida Medical Center, a campus of North Shore located in Fort Lauderdale and sees patients in her office in Sunrise.

For her education and training, Dr. Okun finished a neurological surgery residency at PCOM and her surgical transitional internship at Mercy Health System in Philadelphia. She graduated medical school with highest honors as a Doctor of Osteopathic Medicine (DO) from the Nova Southeastern University College of Medicine in Fort Lauderdale and Summa Cum Laude with a Master of Science (MS) in Biomedical Sciences from Barry University in Miami.

Dr. Giancarlo Perez completed industry sponsored courses including Screw Placement Didactic and a Cadaveric Lab course, as well as Extreme Lateral Interbody Fusion Didactic and Cadaveric Lab Course at Miami Anatomical Research Center. He has participated as a lecturer at the Department of Neurological Surgery Grand Rounds at the University of Miami on the topics of brainstem syndromes, hypothalamic hamartomas, dural arteriovenous fistulas, cavernous carotic fistulas and vein of galen malformations. Dr. Perez specializes in brain and spinal tumors, spinal degenerative disease, normal pressure hydrocephalus, hydrocephalus, pituitary tumors through endoscopic approaches, cranial and spine trauma. He is on staff at Palmetto General Hospital in Hialeah and sees patients in his office in Hialeah.

For his education and training, Dr. Perez completed medical school at the Ponce School of Medicine, in Ponce, Puerto Rico, and completed a residency in neurological surgery at the University of Miami, Jackson Memorial Hospital in Miami. Dr. Perez is a member of the Advanced Neuroscience Network, American College of Physicians, American Association of Neurological Surgeons and Congress of Neurological Surgeons.


Find a Specialist


Jack Klem, MD, FAANS, FACS

Jack Klem, MD, FAANS, FACS

Neurosurgery
Miami 33150, Kendall 33176

Jessica Okun, DO, MS

Jessica Okun, DO, MS

Neurology, Neurosurgery
Sunrise 33351

Giancarlo Perez, MD

Giancarlo Perez, MD

Neurosurgery
Hialeah 33016