Rodney C. Diaz, M.D., F.A.C.S.


Otolaryngology (ENT/Ears, Nose, Throat)


Otolaryngology - Head and Neck Surgery

Skull Base Surgery




  • Associate Professor
  • Residency Program Director


To see if Rodney C. Diaz is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).

Glassrock Building

2521 Stockton Blvd., Suite 5200
Sacramento, CA 95817
Driving Directions

Primary Phone:

Additional Phone Numbers

Physician Referrals: 800-4-UCDAVIS (800-482-3284)

Clinical Interests

My clinical focus concerns the treatment of disorders of hearing and balance within the inner ear and skull base, including the management of acoustic neuroma and other tumors of the cerebellopontine angle and lateral skull base; the medical and surgical management of Ménière's Disease; the treatment of sensorineural hearing loss, including cochlear implantation; and the surgical management of superior semicircular canal dehiscence and other anomalies of the otic capsule.  My clinical practice also encompasses the treatment of diseases of the middle ear, including surgery for chronic otitis media, cholesteatoma, otosclerosis, acquired and congenital hearing loss, and surgical repair of the tympanic membrane and ossicular chain.

My scientific research has evolved and now focuses on the development of techniques by which the hair cell depleted cochlea can be repopulated by pragmatic and functional hair cell like transplants.  I have many clinical research interests spanning a broad range of topics concerning hearing and balance function, including therapeutic trials of pharmacologic tinnitus suppression and management, evaluation of innovative methods of cost-effective ossiculoplasty, and institution wide evaluation of safety and risk factors in general otolaryngological procedures.  I also have an interest in the assessment, management, and reduction of educational gaps in otolaryngological training and of the longitudinal correlation of evaluative methods in medical and surgical residency applicants.   


Head and Neck Surgery

Center/Program Affiliation

UC Davis Medical Group


M.D., UC Davis School of Medicine, Sacramento CA 1999

B.A., UC Berkeley, Berkeley CA 1995

Internship: General Surgery, UC Davis Medical Center, Sacramento CA 1999-2000


Otolaryngology UC Davis Medical Center, Sacramento CA 2000-2004


Otolaryngology, Neurotology and Skull Base Surgery, Michigan Ear Institute, Farmington Hills MI 2004-2006

Board Certifications

American Board of Otolaryngology, 2005

American Board of Otolaryngology - Neurotology,

Professional Memberships

Acoustical Society of America

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 in America Best Doctors, Inc., 2011

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. It is 2015: what is the best treatment for tinnitus? Curr Opin Otolaryngol Head Neck Surg. 2015 Oct;23(5):360.

Nakayama M, Masuda A, Ando KB, Arima S, Kabaya K, Inagaki A, Nakamura Y, Suzuki M, Brodie H, Diaz RC, Murakami S. A Pilot Study on the Efficacy of Continuous Positive Airway Pressure on the Manifestations of Ménière's Disease in Patients with Concomitant Obstructive Sleep Apnea Syndrome. J Clin Sleep Med. 2015 Oct 15;11(10):1101-7.

Gao J, Raghunathan VK, Reid B, Wei D, Diaz RC, Russell P, Murphy CJ, Zhao M. Biomimetic stochastic topography and electric fields synergistically enhance directional migration of corneal epithelial cells in a MMP-3-dependent manner. Acta Biomater. 2015 Jan;12:102-12.

Ivory R, Kane R, Diaz RC. Noise-induced hearing loss: a recreational noise perspective. Curr Opin Otolaryngol Head Neck Surg. 2014 Oct;22(5):394-8.

Diaz RC. Noise-induced hearing loss: perspectives. Curr Opin Otolaryngol Head Neck Surg. 2014 Oct;22(5):373.

Diaz RC, Konia T, Brunberg J. Labyrinthine artery aneurysm as an internal auditory canal mass. J Neurol Surg Rep. 2014 Aug;75(1):e38-41.

Funamura JL, Nguyen AT, Diaz RC. Otogenic lateral sinus thrombosis: case series and controversies. Int J Pediatr Otorhinolaryngol. 2014 May;78(5):866-70.

Shaia WT, Diaz RC. Evolution in surgical management of superior canal dehiscence syndrome. Curr Opin Otolaryngol Head Neck Surg. 2013 Oct;21(5):497-502.

Le CH, Truong AQ, Diaz RC. Novel techniques for the diagnosis of Ménière's disease. Curr Opin Otolaryngol Head Neck Surg. 2013 Oct;21(5):492-6.

Diaz RC. The state of the art in diagnosis and management of vestibulopathy. Curr Opin Otolaryngol Head Neck Surg. 2013 Oct;21(5):468.