Dr. Diaz’s clinical focus is centered on the treatment of disorders of the ear, temporal bone, and lateral skull base. He has particular interest and training in the treatment of: acoustic neuroma and other tumors of the cerebellopontine angle, tumors of the temporal bone and lateral skull base, Ménière’s Disease and endolymphatic hydrops, sensorineural hearing loss, including cochlear implantation, vertigo and imbalance, otosclerosis, ossicular chain discontinuity, chronic ear disease cholesteatoma, and traumatic skull base injury.
Dr. Diaz’s research focus concerns the electrophysiologic and molecular biologic mechanisms of inner ear homeostasis and electrolyte transport dynamics central to hearing and balance function. Dr. Diaz is currently investigating: potassium cycling and lateral wall transport processes, generation and regulation of the endocochlear potential, age related hearing loss, and syndromic and non-syndromic forms of hereditary hearing loss.
B.A., UC Berkeley, Berkeley, California, 1995
American Academy of Facial Plastic and Reconstructive Surgery
American Academy of Otolaryngic Allergy
American Academy of Otolaryngology – Head and Neck Surgery
American Association for the Advancement of Science
American Cleft Palate – Craniofacial Association
American Institute of Physics
American Medical Association
Association for Research in Otolaryngology
California Medical Association
Filipino Americans In Medicine
Honors and Awards:
Inductee Best Doctors Database Sacramento Business Journal, September, 2011
Inductee Best Doctors Database Sacramento Magazine, December, 2011
Resident Travel Award Association for Research in Otolaryngology Midwinter Meeting, Orlando, FL, 2003
Resident Travel Award American Academy of Otolaryngology – Head and Neck Surgery Annual Meeting, Orlando, FL, 2003
Overall Research Symposium Award Bay Area Residents’ Research Symposium (BARRS) Kaiser Permanente Medical Center, Oakland, CA, 2003
Resident Research Award – Graduation Research Forum Department of Otolaryngology – Head and Neck Surgery University of California, Davis Medical Center, Sacramento, CA, 2003
Research Award, Department of Otolaryngology, UC Davis Medical Center, 2003
First Place, Bay Area Residents’ Research Symposium in Otolaryngology, 2003
Graduation Award for Excellence in Otolaryngology, UC Davis, 1999
Select Recent Publications:
Diaz RC. Online review of “Longitudinal Assessment of Quality of Life and Audiometric Test Outcomes in Vestibular Schwannoma Patients Treated with Gamma Knife Surgery”. F1000 Medicine – Otology/Vestibular/Audiology Section. Online June 2011: http://f1000medicine.com
Diaz RC, Hannley M. Clinical Scholars Program, Module 11 – Funding Sources. Clinical Scholars and Biostatistics Program, American Academy of Otolaryngology – Head and Neck Surgery. Online February 1, 2010: http://www.entnet.org/educationandresearch/academyu.cfm
Diaz RC, Pham N. Online review of “Combinatorial Treatments Enhance Recovery Following Facial Nerve Crush”. F1000 Medicine – Otology/Vestibular/Audiology Section. Online October 2010: http://f1000medicine.com
Diaz RC, Pham N. Online review of “Medical and surgical complications in pediatric cochlear implantation”. F1000 Medicine – Otology/Vestibular/Audiology Section. Online March 15, 2010: http://f1000medicine.com
Diaz RC. Inner Ear Protection and Regeneration: A “Historical” Perspective. Current Opinion in Otolaryngology – Head and Neck Surgery. 2009 17:363-372.
Diaz RC, LaRouere MJ, Bojrab DI, Zappia JJ, Sargent EW, Shaia WT. Quality-of-Life Assessment of Ménière Disease Patients After Surgical Labyrinthectomy. Epub ahead of print, 2006.
Diaz RC, Babu SC. Ductal Carcinoma Arising From Syringocystadenoma Papilliferum of the External Auditory Canal. Accepted: Otology and Neurotology, 2006.
Diaz RC, Brodie HA. Management of Temporal Bone Trauma. In: Head and Neck Surgery – Otolaryngology, 4th Edition. B. Bailey & J. Johnson, eds, 2006.
Sargent EW, Diaz RC. Gerontechnology and Hearing. In: Gerontechnology, 1st Edition. G. Lesnoff-Caravaglia, ed. Pending Publication, 2006.
Shaia WT, Zappia JJ, Bojrab DI, LaRouere MJ, Sargent EW, Diaz RC. Success of Posterior Semicircular Canal Occlusion and Application of the Dizziness Handicap Inventory. Otolaryngology – Head and Neck Surgery. 134: 424-430, 2006.
Nie L, Feng W, Diaz RC, Gratton MA, Doyle KJ, Yamoah EN. Functional Consequences of Polyamine Synthesis Inhibition by DFMO: Cellular Mechanisms for DFMO-mediated Ototoxicity. Journal of Biological Chemistry. 280: 15097-15102, 2005.
Strong EB, Diaz RC. Evaluation of the FrameLock Reference-Arc Fixation Device for Image Guided Surgery. Otolaryngology – Head and Neck Surgery. 131: 156-163, 2004.
Strong EB, Kim KK, Diaz RC. The Endoscopic Approach to Orbital Blowout Fracture Repair. Otolaryngology – Head and Neck Surgery. 131: 683-695, 2004.