Microtone Audiology, Inc.

"Our goal is to provide you the best possible hearing care, based upon your individual needs."
3443 Villa Ln Ste 3 Napa, CA 94558

Clinic staff


Gail Amornpongchai


Gail earned her doctorate degree in Audiology from Vanderbilt University. She was born in Thailand, and is fluent in both Thai and English. She enjoys working with patients of all ages and has extensive experience in all areas of diagnostic evaluation and hearing aid technology. She also specializes in the evaluation of patients with dizziness and balance disorders.


Brian Duguay


Brian earned his doctorate in Audiology from the Pennsylvania College of Optometry – School of Audiology, Salus University. He has a vast array of experience in diagnostic testing of the hearing and balance systems for patients of all ages. He specializes in hearing loss and the most current hearing aid technologies including assistive listening devices, Bluetooth technology and loop systems.


Joel Duguay


Joel received his CA Hearing Aid Dispenser’s License and joined the family practice at Microtone Hearing Aid in 2007. He treats patients suffering from any degree of hearing loss in order to help them hear better and greatly improve their quality of life. He goes out into the community and performs educational presentations on hearing loss and hearing aids, and how to cope with a hearing loss.


Layla Sweeney


Layla received her Master of Science in Audiology in 2006 from California State University, Northridge.  She believes that education of the patient is paramount in order to be part of the journey in improving their hearing.  Layla has worked beside Audiologists with over 40 years of industry experience, which she brings with her when working with each patient.

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More information

About this clinic

At Microtone Audiology we aim to always provide you the best possible hearing care, based upon your individual needs.We are a family owned practice and are the oldest continuously-owned hearing aid practice in the Napa Valley. We provide full diagnostic hearing services related to evaluation, rehabilitation and prevention of hearing impairment and are experienced in helping you protect your hearing from further deterioration through education.
We have several locations to better serve you in the surrounding community.

Clinic services

We provide full comprehensive hearing services including:
•Complete hearing evaluation and testing
•Evaluation of dizziness and balance problems
•Hearing aid evaluation and dispensing
•Hearing aid adjustment and servicing
•Custom ear protection
•Assistive listening devices
•Custom swim molds
•Speciality auditory processing testing

Call this clinic today!

(707) 927-1681

Or request an appointment online

Hours of operation

Sunday Closed
Monday 9:00 am - 5:00 pm
By appt.
Tuesday 9:00 am - 5:00 pm
By appt.
Wednesday 9:00 am - 5:00 pm
By appt.
Thursday 9:00 am - 5:00 pm
By appt.
Friday 9:00 am - 5:00 pm
By appt.
Saturday Closed

Clinic links

Accepted forms of payment

  • Visa
  • MasterCard
  • American Express
  • Discover
  • Cash
  • Check
  • Debit
  • Financing available for those who qualify
  • Insurance accepted, please call for details
Disclaimer: This clinic profile is for general information purposes only. Financial aid and insurance coverage can vary widely by policy and should be verified with the provider before services are rendered.