AHN Neurosurgery CAST
Approved Fellowships

Complex Spine Fellowship

Fellowship Director: Alexander Yu, MD 

Alexander Yu


Given the quantity and complexity of spine care and research opportunities, Allegheny Health Network is proud to provide advanced training for neurosurgeons and neurosurgery residents interested in spine. The program allows for a unique exposure to the broad spectrum of the treatment of spinal disorders, the pursuit of advancement through research, and the opportunity to teach residents and medical students. Teaching occurs in the operating room, didactic sessions, the department’s spine biomechanics laboratory and cadaveric work in our state of the art surgical arts center. Learning and teaching opportunities also arise during the department’s annual Spine Summit, a meeting involving the department and national leaders in spine care.

AHN’s spine surgery team is comprised of 4 orthopedic spine surgeons and 17 neurosurgeons. Allegheny General Hospital and Forbes Regional Hospital serve as referral centers for general and complex spine services. The spine program's approach is multidisciplinary, involving neurosurgeons, orthopedic surgeons, pain medicine and rehabilitation medicine. Research initiatives involve internal and external collaborations resulting in a multitude of available research endeavors. The Department of Neurosurgery’s spine biomechanics laboratory serves external and internal projects.

Endovascular Fellowship

Fellowship Director: Richard Williamson, MD 

Alexander Yu, MD


Allegheny Health Network’s Neuroscience Institute is proud to provide advanced training in neuro-endovascular surgery via a 1- or 2-year CAST-certified fellowship program. Given the high level and quality of neuro-endovascular care available within the Allegheny Health Network, the program offers a unique exposure to the field of endovascular neurosurgery, advancement through research, and the opportunity to train as a future educator of residents, medical students, and neuro-endovascular surgeons.

Allegheny General Hospital serves as the flagship hospital within the Allegheny Health Network and is the main cerebrovascular center as well as comprehensive stroke center. The neuro-endovascular fellowship program is multidisciplinary in approach: fellows are trained by a core faculty from Departments of Neurological Surgery, Neurology, and Radiology. The fellowship will provide training in the full spectrum of neuro-endovascular procedures including aneurysm treatment, AVM embolization, AV fistula embolization, mechanical thrombectomy, MMA embolization, carotid angioplasty and stenting, head and neck embolization, cerebral venogram and venous sinus stenting, and spinal angiography and embolization.

Neurosurgical Oncology Fellowship

Fellowship Director: Alexander Yu, MD 

Alexander Yu, MD


The Allegheny Health Network is comprised of eight hospital facilities and clinics primarily serving western Pennsylvania, West Virginia, Ohio and New York. Allegheny General Hospital serves as the main provider hub for the neurosurgical oncology program serving not only Allegheny Health Network, but also external facilities and clinics