Today Friday: 9:00 AM – 5:00 PM
365 Cooper Point Rd NW #102, Olympia, WA 98502
(360) 464-9760

Our Team

Alison P. Vega AU.D., CCC-A, FAAA

Doctor of Audiology

Dr. Vega is a native of the Pacific Northwest.  She obtained her bachelor’s degree in Speech Pathology and Audiology from Western Washington University and her doctoral degree in Audiology from Utah State University.  She began practicing in Olympia in 2004 and opened her private practice in 2011.

Dr. Vega specializes in differential diagnosis and treatment of hearing loss.  She is known for a thorough and thoughtful approach to hearing loss treatment.

She serves on the Washington State Board of Hearing and Speech as well as volunteers her time in the community, providing hearing screenings and advocating for those who have hearing loss.  She belongs to the Junior League of Olympia and the Thurston County Chamber of Commerce .  In 2007, Dr. Vega was awarded Utah State University’s “Outstanding Young Professional” award.

Dr. Vega has two young children and enjoys spending her free time boating with her family in the Puget Sound.


Jessica Hesson

Doctor of Audiology

Jessica Hesson, Au.D. BIO
Dr. Jessica Hesson grew up on the west coast and is a northwest native. She received her Doctor of Audiology degree (Au.D.) from the University of Washington and has practiced audiology in Ear, Nose, and Throat clinics as well as at Veteran’s Affairs clinics. Dr. Hesson focuses primarily on diagnostic hearing evaluations and amplification services for patients of all ages. She joined Ascent Audiology & Hearing in 2018 so that she could broaden her ability to expand hearing healthcare treatment for her patients.
Dr. Hesson’s professional philosophy is patient centered care with evidence-based practice techniques. She focuses on creating treatment plans that include the most current hearing aid technology and include long-term hearing aid support and maintenance. Additionally, she strives to educate patients, with and without hearing loss, about effective communication resources, current amplification options, and community outreach programs. In her spare time, she enjoys hiking, quilting, working in her yard, and spending time with family.


Sarah Yahrmatter, Au.D., CCC-A, FAAA

Doctor of Audiology

Dr. Yahrmatter was born and raised in Michigan, in the metro-Detroit area. She studied Communicative Sciences and Disorders at Michigan State University (Go Green!), and received her doctorate in Audiology from Central Michigan University in May 2017. She completed a year-long residency in Las Vegas, Nevada, and moved to Lacey, Washington in June 2017.
Dr. Yahrmatter specializes in the diagnosis of hearing loss and balance disorders, as well as the treatment of hearing loss and tinnitus. She is known for her patient-centered approach in all aspects of audiology.
She is also passionate about hearing loss prevention and had the opportunity to present her doctoral research for a national conference in San Antonio, TX, on hearing protective devices for recreational shooters. Dr. Yahrmatter was a competitive collegiate pistol shooter at Michigan State University. She enjoys educating recreational shooters and hearing loss patients on ways to protect their hearing against dangerous sounds.
Dr. Yahrmatter currently lives in Lacey, WA with her basset-beagle mix, Nona. If you look slowly enough, you may see them enjoying their time lounging on the beach, hiking in the forest, or working on a do-it-yourself project.


Mikayla Graham

Billing Manager and Insurance Specialist

Mikayla Graham is the Billing Manager at Ascent Audiology. She is a native of Southwest Washington. Mikayla graduated from Lower Columbia College with the hope of going into the healthcare field. Since graduating she has found a love for billing and administrative work in the healthcare setting.


April Buchanan

Patient Care Coordinator


Customer Reviews

All the staff are amazing. Dr's obviously really "know their stuff", which isn't always the case! They are so caring and compassionate and take as much time as needed to be sure their patients are not only educated on hearing aid care but can preform the required care - an...

Gail Chaney, on Google

They were wonderful with my 18 month old!

Samantha Hays, on Google

I have worn hearing aids for 20 years and as improvements are made, I have always tried to go with the best. My current hearing aids are Starky and work through my iPhone. Since moving to Lacey, I have had any number of concerns about the settings and have had...

ChasKak Clarke, on Google

Yesterday was a life changer for me thanks to Dr. Vega. I've been using hearing aids the past several years that were too hot. The frequencies were good and crisp but everything sounded excessively loud and almost metallic. After a consultation and audiogram, Dr. Vega explained how my ears were...

Sam Ham, on Google

Working with Jaclyn Knutson has been incredible. I am impressed with every phase of care she gave me in the past. Jan P

Jan Pierson, on Google

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