Steven L. Giannotta

Chair, Neurological Surgery Professor of Neurological Surgery

Areas of treatment:

Cerebrovascular Disorders
Cerebral Stenosis
Trigeminal Neuralgia
Arteriovenous Malformation
Acoustic Neuroma
Cavernous Angioma
Hemifacial Spasm
Skull Base
Transfusion Free (Bloodless Medicine)
Aneurysm Clip Litigation
Extracranial - Intracranial Bypass
Microvascular Decompression
Retrosigmoid Craniotomy, Mass Resection


  • Neurosurgery


  • Department of Neurological Surgery


  • English
best doctor

Steven L. Giannotta, MD

Chair, Neurological Surgery
Professor of Neurological Surgery

Practicing location:

  • USC Healthcare Center 2

About this doctor:

Steven L. Giannotta M.D., Chair of Neurological Surgery, joined the Department of Neurosurgery at USC in 1980. He earned his medical degree and did his residency at University of Michigan. He is involved in many local, national and international committees and organizations. Dr. Giannotta has gained recognition for his work in cerebrovascular disease of the brain and spinal cord. He has surgically treated over 1000 intracranial aneurysms. In conjunction with his associates Dr. Giannotta has developed a comprehensive approach to the gamut of cerebrovascular conditions. Techniques utilized in this comprehensive program include but are not limited to microsurgical clip ligation for aneurysms, coil embolization for aneurysms, microvascular excision, embolization, stereotactic radiosurgery using the Gamma Knife for arteriovenous malformations, carotid endarterectomy and extracranial to intracranial bypass procedures for cerebrovascular occlusive disease. Dr. Giannotta also has an interest and special expertise in surgical approaches to the cranial base. He has surgically removed more than 400 acoustic neuromas and along with several colleagues in otolaryngology has developed a team approach to complex cranial base lesions including acoustic neuromas, meningiomas of the cranial base, complex aneurysms that require cranial base approaches and other benign conditions affecting the base of the brain and skull. Complex conditions may require several modes of therapy including surgical excision, embolization, and stereotactic radiosurgery using the Gamma Knife and Cyberknife.


Doctor of Medicine, University of Michigan, 1972


University of Michigan, Surgery, 1972 - 1973


University of Michigan, Neurosurgery, 1973 - 1978


American Board of Neurological Surgery

Professional society memberships:

American Association of Neurological Surgeons; Congress of Neurological Surgeons
Academy of Neurological Surgeons
American Board of Neurological Surgery
Western Neurosurgical Society


Castle Connolly "Top Doctor,” 2015
Dr. Giannotta was voted a Top Doctor by Pasadena Magazine in 2011.
2011 list of America's Top Doctors, compiled by Castle Connolly Medical Ltd.