Physicians

Dr. Ritvik Mehta received his medical degree from the University of California, San Diego School of Medicine. He then went on to Harvard Medical School where he completed his internship in General Surgery and residency in Otolaryngology / Head and Neck Surgery. While at Harvard, he developed his interest in treating patients…

William Hansen has worked at CALHNS for a year and a half. He holds degrees in audio engineering, speech-language pathology & hearing sciences and his doctorate in Audiology from the joint doctoral program at UCSD/SDSU. He specializes in hearing and balance disorders and will continue to provide patient-centered, research-driven best practices for our patients in
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Kayli Silverstein received her undergraduate degree from Michigan State University in Special Education and a Doctor of Audiology degree from Wayne State University in Detroit, Michigan. She recently completed her audiology externship at Mayo Clinic in Rochester, Minnesota. She specializes in cochlear implants and vestibular sciences and has a passion for providing the best care
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Dr. Audrey Calzada is a board-certified Otolaryngologist, Head & Neck Surgeon who specializes in hearing disorders, chronic ear disease, balance disturbance, and tumors of the lateral skull base. She has a passion for serving patients and providing excellent clinical and surgical care. Dr. Calzada’s undergraduate degree is from the University of California, San Diego…

Dr. Tian Is an American otolaryngology board certified ENT doctor with special interest and expertise in treating chronic sinus diseases, nasal breathing problems, allergy and other nasal sinus disorders. She uses the most up to date imaging guided technique to effectively increase the success of the surgery and decrease the postoperative discomfort. She is interested in office sinus procedure, which involves little down time and improves recovery time.

Vish Banthia, MD FACS, is double Board Certified in Otolaryngology-Head and Neck Surgery and Facial Plastic and Reconstructive Surgery with interests in general Otolaryngology and minimally invasive nasal and sinus surgery as well as minimally invasive to comprehensive facial rejuvenation.

Kelsie Shimizu is a compassionate Physician Assistant dedicated to patient-centered care.  She treats various otolaryngology issues and works closely with the physicians to provide the best possible care for each patient. She received her undergraduate degree in Rehabilitation and Human Services from Pennsylvania State University and Masters of Physician Assistant from Eastern Virginia Medical School. When she is not with her patients, she likes to spend her free time at the beach with her dog, or painting and drawing.

Winona Wiland is a board-certified Physician Assistant working in Otolaryngology and Cosmetics. She studied Biologic Sciences at California Polytechnic State University in San Luis Obispo before she went on complete her Master’s Degree in Physician Assistant Studies at Chapman University. After working in a prominent ENT office in Los Angeles, her passion for the specialty
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