Christi Miller, Ph.D., CCC-AChristi Miller is the director of the Amplification Laboratory, and a Lecturer in the UW Department of Speech and Hearing Sciences. She was trained as a clinical audiologist (B.S. and M.A. in Communication Sciences and Disorders) at the University of Texas at Austin, then practiced clinically for many years before returning to earn her PhD.  Under the mentorship of Dr. Pam Souza, Dr. Kelly Tremblay and Dr. Ruth Bentler, she completed her doctorate at the University of Washington in Seattle. Her research focuses on improving outcomes for hearing aid users, particularly in noisy environments. Aside from her research, she supervises audiology students in the clinic and teaches the graduate-level courses. 


Kelly Tremblay, Ph.D., CCC-A | University of Washington
Ruth Bentler, Ph.D., CCC-A | University of Iowa
Yu-Hsiang Wu, M.D., Ph.D. | University of Iowa
Marc Brennan, Ph.D., CCC-A | Boys Town National Research Hospital
Justin Zakis, Ph.D. | Blamey Saunders Hearing, Melbourne, Australia
Joshua Bernstein, Ph.D| Walter Reed National Military Medical Center
Carolyn Baylor, Ph.D. | University of Washington


Lauren Kawaguchi, B.S.  |  Lauren is starting her second year of the UW Au.D. program.  Originally from Las Vegas, Nevada, she received her B.S. in Speech and Hearing Sciences at the University of Washington before deciding to continue her studies in Audiology.  Lauren currently has an interest in working with hearing aids and quality of life measures. She enjoys running and restaurant hunting in her free time.  

 Casey Heidohrn, B.A.  | Casey is currently a second year in the UW AuD program. After growing up in Northern California, she went on to receive her B.A. in Speech, Language and Hearing Sciences from the University of Colorado in Boulder. She enjoys working with both pediatric and adult hearing aid patients and is looking forward to expanding her knowledge about amplification and speech perception through working in this lab. In her free time, Casey enjoys hiking, kayaking, reading and exploring Seattle.

Sam Osborne, B.A.
Claire Jordan, B.A.
Nicole Whittle, B.A.
Gina Hone, B.A.


Kelley Trapp, B.A.  |  Kelley is currently in her third year of the UW Au.D. program. Originally from Northern CA, she received her B.A. in Spanish from Amherst College. She returned to the west coast to begin graduate school and has really enjoyed working hands on with hearing aids in the clinic and learning about hearing aid technology in her coursework. She is excited to contribute to research in order to eventually improve how patients are fit in the clinic. In her free time, Kelley plays for a Seattle-based lacrosse team and is actively searching for the best latte this city has to offer!  She will be completing my 4th Year Externship at UC San Francisco. 

Erin Stewart, B.S.  |  Erin is currently a third year graduate student in the UW Au.D. program. Originally from North Carolina, Erin received her B.S. in Communication Sciences and Disorders from the University of North Carolina at Greensboro where her undergraduate research focused on aural rehabilitation for bimodal listeners. She is looking forward to learning more about speech perception in hearing aid users through her course work, clinic and research in the lab. In her free time, she enjoys kayaking, hiking and searching for authentic southern food in Seattle. She will complete her 4th Year Externship at the Moog Center in St. Louis.

Jordan Rock, Au.D. |  After completing his undergraduate major in Communications at the University of Wisconsin, Jordan moved out west to continue his education. He has completed his Audiology program and is now working at House Ear Clinic in Los Angeles. His clinical interests include learning more about mechanical speech reproduction and how to make speech sound more natural to patients with hearing aids. When he has free time, he goes indoor rock-climbing and plays guitar.

Emily Bates, Au.D.  |  Emily is completing her 4th Year Externship at UC Davis. She is a native of Seattle and received her undergraduate degree at the University of Washington in Speech and Hearing Sciences. Emily has an interest in working with pediatric patients but has also enjoyed working with adult hearing aid patients in the adult diagnostic and amplification clinic and during the UW Ear conference. She has published her capstone research project comparing the effects of different frequency lowering strategies on speech perception for hearing impaired adults. In her free time Emily enjoys hiking, gardening, and baking for friends and family.

Kristen Birch, Au.D.  |  Kristen has completed her AuD and will begin work at Providence Speech and Hearing Clinic in Southern California this summer . She received a B.S. in Anthropology and Spanish from the Western Michigan University and completed a second B.S. in Speech and Hearing Sciences from the University of Northern Colorado.  She became interested in hearing aid research after completing hearing aids coursework with Dr. Miller. Her Au.D. research project examined how hearing loss affects quality of life in comparison to other communication disorders. In her free time, she enjoys hiking, yoga, and spending time with friends and family.

Samantha Coppa, Au.D.  |  Samantha Coppa is an Audiologist at the House Ear Clinic in Los Angeles. She received her B.A. in Speech Language and Hearing Sciences from San Diego State University in 2011. Samantha's Capstone project examined the ability of speech-in-noise tests to predict real world hearing aid outcomes. She has one daughter who is stationed with the US Air Force in Texas.

Sara Elshafei, Au.D.  |  Sara first became interested in hearing aids as an employee at the Lions Hearing Aid Bank where she tested and worked with hearing aids on a weekly basis.  With the guidance of Dr. Miller, Sara developed a fascination with hearing aid signal processing and their effects on speech perception.  She completed her AuD research project entitled “The Effects of Digital Noise Reduction on the Temporal Envelope and Speech Perception” in June of 2013.  The research project was presented as a poster at the 2013 AudiologyNOW! conference in Anaheim.  Sara is a native of Washington State and completed her undergraduate education at Western Washington University, where she studied Communication Sciences and Disorders and Audiology. She is an Audiologist at Evergreen Speech and Hearing. In her free time she enjoys spending time with friends, family, and her boxer dog Opal.