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Neurosurgery Residents

Phelan Shea, MD, PGY-1

Phelan Shea, MD, PGY-1
University of Maryland School of Medicine

Dr. Shea is a Boston native who attended the University of Maryland for medical school. He is interested in cerebrovascular neurosurgery and his research has been featured in journals and national meetings. He is a Pisces and enjoys playing hockey. 

Jesse Stokum

Jesse Stokum, MD, PhD, PGY-1
University of Maryland School of Medicine

Dr. Stokum has interests in cerebrovascular neurosurgery and neurocritical care. His research is primarily focused on the astroglial response to brain injury and the molecular mechanisms that drive cerebral edema formation. Outside of work, he likes to spend time with his daughter.

Abdul-Kareem Ahmed

Abdul-Kareem Ahmed, MD, SM, PGY-2
Brown University School of Medicine

Dr. Ahmed has interests in neuro-oncology, functional neurosurgery, and neuroimaging. He is investigating neurosurgical applications of MRI-guided focused ultrasound. Whenever possible, he enjoys narrative writing, traveling, and ocean swimming in coastal Rhode Island.

Joshua Olexa

Joshua Olexa, MD, PGY-2
University of Maryland School of Medicine

Dr. Joshua Olexa is a second year resident in Neurosurgery.  His clinical interests include degenerative spinal pathology and Neurosurgical trauma. His hobbies outside of Neurosurgery include running, snowboarding, and fishing.

Nathan Han

Nathan Han, MD, PGY-3
New York University School of Medicine

Nathan Han is a graduate from Rice University, attended New York University medical school and is now a third year resident in Neurosurgery at University of Maryland Medical Center. Outside of work, he enjoys listening and playing classical music with his pianist wife. 

Ashish Sharma

Ashish Sharma, MD, PGY-3
Medical College of Wisconsin

Dr. Sharma is a PGY-3 resident in Neurosurgery. He has an interest in open and endovascular Neurosurgery as well as complex deformity spine surgery. He plans to pursue an infolded endovascular fellowship. His hobbies include exercise, trying new foods, and spending time with family, friends and his dog.

Nicholas Caffes

Nicholas Caffes, MD, PGY-4
University of Maryland School of Medicine

Dr. Caffes is a PGY4 resident in neurosurgery. His interests include open and endovascular cerebrovascular surgery as well as traumatic brain and spinal cord injury. Dr. Caffes plans to complete an enfolded interventional neuroradiology fellowship. His hobbies outside of work include hiking, cooking, and traveling. 

Jeffrey Oliver

Jeffrey Oliver, MD, PGY-4
Jefferson Medical College of Thomas Jefferson University

Dr. Oliver is a PGY-4 in Neurosurgery.  He is interested in a career in trauma and vascular neurosurgery.  His interests outside of work include Penn State football, exercising, and spending time with his family.  

Greg Cannarsa

Gregory Cannarsa, MD, PGY-5
Jefferson Medical College of Thomas Jefferson University

Greg Cannarsa is a PGY-5 Resident currently doing a dedicated endovascular neurosurgery fellowship with Neuro-Interventional Radiology. He plans to pursue a career as a dual-trained vascular neurosurgeon. His hobbies are running and watching Philadelphia Eagles football.

Tim Chryssikos

Timothy Chryssikos, MD, PhD, PGY-5
University of Maryland School of Medicine

Dr. Chryssikos grew up in Maryland and graduated from Swarthmore College. He joined the neurosurgery residency program after graduating from the University of Maryland School of Medicine, where he was elected to the AOA Honor Medical Society and received the Raymond K. Thompson Award from the Department of Neurosurgery. He completed a PhD in anthropology at Rice University on the social relations of scientific research, for which he received the John W. Gardner Award for best dissertation in the School of Social Sciences. He will pursue a fellowship in spine surgery at the University of California, San Francisco upon completion of the residency program.

Nathan Pratt

Nathan Pratt, MD, PGY-6
University of Oklahoma College of Medicine

Dr. Pratt is a 6th year resident in neurosurgery. He completed additional training in complex and deformity spinal surgery with Dr. Sansur. He will begin a fellowship at Swedish Neuroscience Institute in complex spinal surgery beginning in 2021.

Aaron Wessell

Aaron Wessell, MD, PGY-6
George Washington University School of Medicine and Health Sciences 

Aaron Wessell, MD, joined the University of Maryland Department of Neurosurgery in 2014 after earning his medical degree from the George Washington University School of Medicine and Health Sciences in Washington, DC. He received his undergraduate degree in biology from the University of Wisconsin, graduating with distinction.

Dr. Wessell’s clinical and research interests included endovascular/cerebrovascular neurosurgery, skull base surgery and general neurosurgery. Following residency, Dr. Wessell plans to complete a fellowship in endovascular/cerebrovascular neurosurgery.

In his free time, Dr. Wessell enjoys running, weight-lifting and spending time with his wife and two sons.

Matt Kole

Matthew Kole, MD, PGY-7
Baylor College of Medicine

Dr. Kole is a Chief Resident in Neurosurgery. His academic and clinical interests revolve around cerebrovascular surgery and improvement of outcomes in aneurysmal subarachnoid hemorrhage. He will be attending The University of Texas at Houston for a 2 year fellowship in Skull Base/Cerebrovascular and Endovascular Neurosurgery. Outside of the hospital, he can be found rock climbing, cooking, and attending live music events.

Harry Mushlin

Harry Mushlin, MD, PGY-7
New York University School of Medicine

Dr. Mushlin is a Chief Resident in Neurosurgery. He completed a focus in complex spine surgery during residency under the mentorship of Dr. Sansur. He plans to pursue a career in academic spine surgery and will be attending University of Miami in 2020 for a fellowship in complex and minimally invasive spine surgery. His hobbies outside of work include squash, cooking, and traveling.