Our Staff

Rosalind Sinclair, BC-HIS

Hearing Instrument Specialist

Rosalind, “Roz,” has been a hearing instrument specialist since 2001 and is Board Certified in Hearing Instrument Sciences. She serves the hearing impaired community in beautiful Vancouver, Washington. Designing custom, advanced technology hearing systems for thousands of hearing impaired patients is a joy, not a job, to her. Being exposed to the value of hearing aids at a young age due to her grandparents wearing them helped her to understand that hearing loss doesn’t just affect the person wearing aids but also their families, co-workers and friends. She feels so privileged to pair art and science in connecting people to their world of what matters most to them and their loved ones. Her favorite days at the office are when tears of pain and frustration of those in need are turned to tears of joy when they can hear and understand. “It’s a wonderful experience to have hearing healthcare done right.”

Mary Jo Guajardo

Patient Services Coordinator

Mary Jo enjoys making a difference for others, that is what inspires her. Her goal is to create an environment of compassion, and respect, with patients always being heard and feeling acknowledged. She holds a Bachelor’s degree in Psychology from Western Washington University. She has been working in the Hearing aid industry since 2011. Moving to Vancouver in 2020 from Seattle with her husband and cats has been a wonderful adventure discovering the beauty of the area. She enjoys hiking around the PNW, gardening and photography.

Kasey Collier

Audio Tech

Kasey has a passion for helping others and strives to make a difference for patients in the hearing healthcare community. She began her hearing healthcare journey in 2006 and continues to expand her knowledge in Audiology. Originally from the PNW, Kasey enjoys spending time with her two young children, venturing outdoors and cooking.

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Customer Reviews

Very helpful for me as a visitor to Vancouver in need of hearing aid repair. While they did not work with the brand I use, they figured out who did and how I could get the help I need. Nice job Mary Jo!

Steve Worthington, on Google
Gary McMerrick, on Google
Amla Tomkoria, on Google

Roz is very professional, meticulous, thorough and friendly.

Paul Jacobsen, on Google

I’ve been going to Willoughby Hearing for approximately five years. They are absolutely outstanding. Roz is one of the most loving and caring people that you can meet. I would recommend them to anybody.

Scott Eckel, on Google
Daniel Longwell, on Google

Rox is extremely professional and always a delight to visit with.

Miss Martha, on Google

Everything was great they answered all my questions explained everything I asked.

James Mohagen, on Google
Rick Kemmer, on Google

Needed assistance on a mid morning Friday one aid wasn't working , drove to office asked to drop off and they called within 2hrs I was so pleased so I wasn't gonna go all weekend without. So very pleased and always pleased with there help

Lori Nelson, on Google

Always available and very efficient in trouble shooting. I've been with Willoughby for several years and have Nolans to change providers.

Linda Whitehurst, on Google

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