Dr. Brian P. Callahan

Sergio Rivero is a Neurosurgery provider in Tucson, Arizona. Dr. Rivero is rated as an Advanced provider by MediFind in the treatment of Frontonasal Dysplasia Klippel Feil Syndrome. His top areas of expertise are Spinal Stenosis, Subdural Hematoma, Spondylolisthesis, Microdiscectomy, and Cervical Disc Surgery. Dr. Rivero is currently accepting new patients.

I’m passionate about advancing spine care through surgical innovation, outcomes research, and medical education, and I remain actively engaged in mentorship and clinical teaching. My clinical interests span minimally invasive spine surgery, complex spine reconstruction, spinal oncology, and deformity correction, with a strong focus on personalized, evidence-based care.Outside of the operating room, I enjoy spending time with my family, exploring the outdoors, and supporting health outreach programs. I’m also involved in global neurosurgery initiatives aimed at improving access to advanced spine care in underserved regions. Fluent in English and Arabic, I strive to provide inclusive, culturally attuned care that respects the backgrounds and needs of every patient I serve. Dr. Mathkour is rated as an Advanced provider by MediFind in the treatment of Frontonasal Dysplasia Klippel Feil Syndrome. His top areas of expertise are Chiari Malformation, Chiari Malformation Type 2, Split Spinal Cord Malformation, Deep Brain Stimulation, and Posterior Fossa Decompression.