Stockton Staff

The University of the Pacific Hearing and Balance Center provides comprehensive and professional audiological care, from prevention to rehabilitation, for individuals of all ages with hearing concerns. Our goal is to optimize your hearing and make listening effortless, ensuring an improved quality of life through better hearing.

Clinical Faculty

Gail Amornpongchai, Au.D.

Dr. Amornpongchai is the clinical director of audiology for the Stockton Hearing and Balance Center. She received her Bachelor of Science from Northwestern University and her Doctor of Audiology degree from Vanderbilt University. She is also a fellow of the American Academy of Audiology. She enjoys working with both adult and pediatric patients and is highly skilled and knowledgeable in all areas of diagnostic evaluation and hearing aid technology. She also specializes in the evaluation of patients with dizziness and balance disorders. Dr. Amornpongchai speaks both English and Thai.

Graduate Student Resident

Munirah Awad, B.S.

Munirah Awad is an audiology extern at the University of the Pacific Hearing and Balance Center in Stockton. She is working to earn her Au.D. from the University of the Pacific San Francisco Campus, which she hopes to complete by July 2022. She previously received her bachelor’s degree in biology and a minor in chemistry from the University of San Francisco. Munirah enjoys working with diverse populations and helping people from all walks of life.


Cherry Henson

Cherry Henson was born and raised in Manila, Philippines. She graduated from St. Scholastica’s College in Manila with a bachelor’s in entrepreneurship. Before taking this position, Cherry managed a preschool for 15 years until she and her three children migrated to the U.S. in 2019. Cherry is a highly motivated, energetic and will work with a broad range of pediatric and adult patients. In her spare time, she loves to care for her houseplants and family dog, Truffle.

Iris Mccollum

Iris McCollum is a Stockton native who is currently completing her associate degree in business administration and working toward her bachelor’s degree. Her main duties are billing insurance, coordinating hearing aid care, and assisting with walk-in hearing aid patients. Iris enjoys reading and spending time with her family. Her favorite thing to do is try out new cooking recipes and share them for others to enjoy. She looks forward to helping patients from all walks of life.


Bob Hanyak, Au.D.

Dr. Bob Hanyak is an associate professor of audiology and chair of the department of speech-language pathology at the University of the Pacific. Dr. Hanyak is a fellow of both the American Speech-Language-Hearing Association and the American Academy of Audiology as well as the recipient of several university teaching awards. His areas of clinical interest are aural rehabilitation, amplification and pediatric diagnostic audiology.

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