Chaur-Dong Hsu, MD, MPH, FACOG
Arnaldo L Rivera, MD
Associate Professor of Otology/Neurotology
  • Department of Otolaryngology – Head & Neck Surgery
    University of Missouri
    Columbia, Missouri, USA
    Phone: (573) 882-8175, Email:


Institution and Location

(if applicable)


Field of Study


Interamerican University of Puerto Rico, San Juan, PR





University of Puerto Rico, San Juan, PR





National Naval Medical Center, Bethesda




General Surgery Internship


National Capital Consortium, Washington DC



Otolaryngology Residency


Northwestern University Hospital, Chicago, IL






Dr. Rivera accepted the positon of Associate Professor of Clinical Otolaryngology—Head and Neck Surgery at University of Missouri in 2014, after serving 16 years in the US Navy. While in active duty, he trained residents on surgical skills.

Born and raised in Puerto Rico, Dr. Rivera received his Medical Degree from the University of Puerto Rico in San Juan.

Dr. Rivera is board certified in both Otolaryngology and Neurotology. He has participated in Humanitarian Missions in eight different countries. His clinical interests include deafness, cochlear implants, tumors of the skull base, and facial nerves.

Dr. Rivera authored multiple published peer reviewed journal articles and book chapters. Moreover, he is a member on the FDA panel for ENT.

Research Interest

  • Facial Nerve Paralysis
  • Hearing Loss
  • Hearing Loss Reconstruction
  • Pediatric Cochlear Implant
  • Pediatric Hearing Reconstruction


Scientific Activities:

Positions and Honors


Alpha Omega Alpha


Navy Achievement Medal


Navy Commendation Medal


Navy Commendation Medal


Army Achievement Medal


Joint Service Achievement Medal



  1. Puricelli MD, Newby MD, Fishman AJ, Rivera AL. The Stalactite of Fishman: Anatomic Characterization and Mastoid Surgical Implications. Publication Pending
  2. Puricelli MD, Gilley DR, Coberly JS, Rivera A, Bien AG, Zitsch RP 3rd, Miller DC, Lin J. Malignant Peripheral Nerve Sheath Tumor of the Jugular Foramen. Oto Neurotol. 2016 Aug; 37(7):e247-9.
  3. Newberry CI, Newby MD, Puricelli MD, Rivera AL. Delayed Surgical Intervention in the Management of Perilymphatic Fistula. Flob J Oto. 2016 June; 1(2) (ePub).
  4. Bernstein J, Goupell M, Schuchman G, Rivera AL, Brungart D. Having Two Ears Facilitates the Perceptual Separation of Concurrent Talkers for Bilateral and Single-Sided Deaf Cochlear Implantees. Ear Hear. 2016 May-Jun; 37(3):289-302.
  5. Erbele I, Bernstein J, Schuchman G, Brungart DS, Rivera AL. An initial experience of cochlear mplantation for patients with single-sided deafness after prior osseointegrated hearing device. Otol & Neurotol 36(1):e24-e29, January 2015.
  6. Mikals SJ, Schuchman GI, Bernstein JG, Rivera AL. Cochlear implant leading to successful stapedectomy in contralateral only hearing ear. ENT Journal. 2015 March;94(3):105-107
  7. Unilateral Ear and Temporomandibular Joint Discomfort  Lanigan A, TompkinsAJ, Rivera AL JAMA Otolaryngol Head Neck Surg. 2014; 140(9):873-874. doi:10.1001/jamaoto.2014.1472
  8. Sridhara SK, Rivera AL, Littlefield P. Tympanoplasty for blast-induced perforations: the Walter Reed experience. Otolaryngol Head Neck Surg. 2013 Jan; 148(1):103-7.
  9. Fishman AJ, Moreno LE, Rivera AL, Richter CP. CO (2) laser fiber soft cochleostomy: development of a technique using human temporal bones and a guinea pig model. Lasers Surg Med. 2010 Mar; 42(3):245-56. doi: 10.1002/lsm.20902.
  10. Gutierrez HH, Nieves B, Chumley P, Rivera AL, Freeman BA. Nitric oxide regulation of superoxide- dependent lung injury: oxidant-protective actions of endogenously produced and exogenously administered nitric oxide. Free Radic Biol Med. 1996; 21(1): 43-52
  11. Nieves-Cruz B, Rivera AL, Cifuentes J, Pataki G, Matalon S, Carlo WA, Tanswell AK, Freeman B. Clinical surfactant preparations mediate SOD and catalase uptake by type II cells and lung tissue. Am J Physiol. 1996; 270(4 pt 1): L659-67.
  12. Tan S, Radi R, Gaudier F, Evans RA, Rivera AL, Kirk KA, Parks DA. Physiologic levels of uric acid inhibit xanthine oxidase in human plasma. Pediatr Res. 1993 Sep; 34(3):303-7.