Alexander C Whiting, MD

Dr. Xu is a neurological specialist with AHN Neuroscience Institute. He specializes in minimally invasive spine surgery and robotic spine surgery as solutions to herniations, myelopathy, stenosis, neuro-trauma, neuropathy, scoliosis, and neuralgia. He also provides treatments for back, leg, and neck pain as well as for cervical disorders, spinal-based issues, and nerve complications. Dr. Xu earned his medical degree from Drexel University College of Medicine in Philadelphia, Pennsylvania. His residency was completed AHN Allegheny General Hospital in Pittsburgh, PA, where he also continued to complete a fellowship in Complex Spine Surgery. He is a widely published contributor to several journals and book chapters and has also given numerous presentations pertaining to his specialties. Dr. Xu’s philosophy is to take an individual approach to every patient so they can improve their quality of life quickly and safely. Patients can make an appointment with him at Allegheny General Hospital or at his office in Washington, Pennsylvania.

Kristina Lang, PA-C, is a neurology physician assistant specializing in movement disorders. She has a clinical focus on conditions such as Parkinson’s disease, essential tremors, cerebellar ataxia, dystonia, Huntington’s disease, restless leg syndrome, tardive dyskinesia, Tourette’s disorder, abnormal gait, balance disorders, and abnormal movements. Kristina is skilled in administering botulinum toxin injections for conditions like migraines, blepharospasm, hemifacial spasm, cervical dystonia, and sialorrhea. Kristina earned her Bachelor of Science degree in Biobehavioral Health from Pennsylvania State University in State College, Pennsylvania, and her Master of Science degree in Physician Assistant Studies from Slippery Rock University in Slippery Rock, Pennsylvania. Kristina is board-certified by the National Commission on Certification of Physician Assistants (NCCPA). Kristina’s practice philosophy centers on providing patient-centered care through evidence-based practices. Her goal is not only to improvements in their daily lives. She welcomes patients ages 18 and older.

Dr. Cerejo is an interventional neurologist with fellowship training in endovascular treatment of blood vessel disorders of the brain, neck, and spine. He specializes in diagnosis and treatment of ischemic stroke, TIA, and intracerebral hemorrhage. Specific conditions include intracranial aneurysm, arteriovenous malformation, carotid-cavernous fistula, epistaxis, carotid artery and vertebral artery dissections, carotid artery and intracranial stenosis or blockage, dural arteriovenous fistula, spinal cord malformations, transient ischemic attack (TIA), and vertebral artery stenosis and blockage. His expertise includes acute stroke therapy, cerebral and spinal angiography, endovascular aneurysm treatment (coiling and flow-diversion), pre-operative tumor embolization, stenting, and vascular malformation embolization. Dr. Cerejo completed his residency in neurology, followed by fellowships in vascular neurology and endovascular surgical neuroradiology at the Cleveland Clinic in Cleveland, Ohio. Certified by the American Board of Psychiatry and Neurology with a subspecialty certificate in vascular neurology, Dr. Cerejo is co-director of endovascular services at the Allegheny Health Network (AHN) Cerebrovascular Center. He is a member of American Heart Association, American Stroke Association, American Academy of Neurology, Association of Indian Neurologists in America, Society of Neurointerventional Surgery, and Society of Vascular and Interventional Neurology. Dr. Cerejo is a former blogger for Stroke, a journal of the American Heart Association/American Stroke Association. His current research focuses on mild acute ischemic stroke with large vessel occlusion. Dr. Cerejo has medical privileges at Allegheny General Hospital.