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Sky Ridge Medical Center

Meet Our Neurosurgeons

Meet the Neurosurgeons at Sky Ridge Medical Center

Michael Rauzzino, MD

Michael Rauzzino, MDDr. Michael J. Rauzzino is the Chief of Neurosurgery at Sky Ridge Medical Center. He is the past Chair of the Neurosciences Department and has helped found and lead the development of the Neurosurgery and Neurology programs including the designation of the Sky Ridge Medical Center as an advanced Trauma and Stroke center.

Dr. Rauzzino received his neurosurgical training at the University of Alabama; he then went on to complete a fellowship in complex spinal disorders at the Henry Ford Hospital in Detroit, Michigan under the supervision of both orthopedic surgeons and neurosurgeons.  While at Henry Ford Hospital, he served as faculty training other neurosurgeons and serving as a team neurosurgeon to the Detroit Lions and Detroit Red Wings.

Dr. Rauzzino maintains a busy clinical practice focusing on minimally invasive and motion preserving spinal surgery. He has special expertise in disc replacement surgery of both the cervical and lumbar spine He performs the majority of his surgeries using minimally invasive techniques for both decompression and fusion. He also has an interest in surgery for tumors of the brain and spine and actively participates in research and clinical outcome studies.

Brent Kimball, MD

Brent Kimball, MDDr. Brent Kimball is experienced and accomplished in the full spectrum of general neurosurgery. Dr. Kimball uses the Microneurosurgical technique to treat lesions of the skull base and cerebrum including trans-sphenoidal management of pituitary lesions, and endoscopic management of ventricular lesions. Dr. Kimball has a strong understanding of 3D neurosurgical anatomy and complex spinal instrumentation including posterior and lateral minimally invasive techniques to treat cranial-cervical and degenerative thoracic-lumbar conditions.

Dr. Kimball studied at Colombia College of Physicians & Surgeons where he graduated in 2007 with his medical degree.

Lloyd Mobley, MD

Lloyd Mobley, MDDr. Mobley is a leading ABNS Board-Certified Neurosurgeon specializing in advanced surgical and non-operative treatment options. After receiving his medical degree at the University of Colorado Health Sciences Center School of Medicine, he completed his neurosurgical residency training at the University of Nebraska Medical Center. Dr. Mobley was trained in the prevention, diagnosis, treatment, and rehabilitation of disorders that affect the spinal column, brain, nervous system and peripheral nerves. His training included extensive exposure to minimally invasive and complex surgery of the brain and spine.

After his extensive education and training, Dr. Mobley returned to Colorado and has been in private practice for the past nine years. Dr. Mobley specializes in brain and spine tumors, minimally invasive spinal surgery, endoscopic surgery, 3D imaging assisted surgery, degenerative spinal disorders, compression fractures, carpal tunnel syndrome and ulnar nerve compression as well as many other neurosurgical procedures.

Renatta Osterdock, MD

Renatta Osterdock, MD

Dr. Renatta Osterdock came to Denver in February of 2008 from Loma Linda University where she served as the Chief of Pediatric Neurosurgery and Medical Director of the Pediatric Neuroscience Center from 2001 to 2007. She has been internationally recognized for her role in leading the team that separated the Craniopagus Twins at Loma Linda.

Since she has been in Denver, Dr. Osterdock has worked closely with the Rocky Mountain Hospital for Children to establish multi-disciplinary centers to care for children with complex disorders including Craniosynostosis, Spina Bifida and Spinal Disorders, Spasticity, and Chiari Malformations. She also works closely with the maternal-fetal program to help coordinate care for mothers and infants with congenital malformations and diagnoses.

Chad Prusmack, MD

Chad Prusmack, MDDr. Prusmack's goal is to help patients recover faster and keep their musculature intact so they can resume an active lifestyle. After receiving his medical degree at Columbia University College of Physicians and Surgeons, he completed his neurosurgical residency training at the University of Miami. Dr. Prusmack’s clinical interests include minimally invasive spine surgery, complex cervical/lumbar spine surgery, sports medicine of the spine/brain and neurosurgical consultant to the Denver Broncos.

Mariel Szapiel, MD


Mariel Szapiel, MD received her Bachelor’s degree in Industrial Microbiology from the University of Puerto Rico in 1999, where she graduated Magna Cum Laude. She then moved on to complete her medical degree from the University Of Puerto Rico School Of Medicine, in San Juan, also graduating Magna Cum Laude in 2003. When she finished her residency training at The Ohio State University Medical Center in 2010, Dr. Szapiel became one of only two female graduates from her medical school to ever complete a residency in Neurological Surgery in the United States.

After residency, she remained at The Ohio State University in Columbus, Ohio for an additional year to complete her Fellowship training in Stereotactic and Functional Neurosurgery. As part of her fellowship, she had the unique opportunity to be involved in cutting edge research into Deep Brain Stimulation (brain pacemakers) for movement disorders as well as other neurological conditions such as severe disability from stroke, traumatic brain injury, psychiatric disorders and obesity. As part of her fellowship, Dr. Szapiel also obtained extensive experience with other neuromodulation techniques (spinal cord stimulation, occipital nerve stimulation) for pain.