Menlo Park: (650) 854-1980
Los Altos: (650) 941-0664
Menlo Park: (650) 854-1980
Los Altos: (650) 941-0664
Menlo Park: (650) 854-1980
Los Altos: (650) 941-0664
Hear the Best. From the Best
As an independent audiology clinic, we partner with the world’s leading hearing aid manufacturers.
Offering access to the latest innovations, personalized fittings, and hands-on support tailored to your lifestyle and preferences.


Hear the Best. From the Best
As an independent audiology clinic, we partner with the world’s leading hearing aid manufacturers.
Offering access to the latest innovations, personalized fittings, and hands-on support tailored to your lifestyle and preferences.


Hear the Best. From the Best
As an independent audiology clinic, we partner with the world’s leading hearing aid manufacturers.
Offering access to the latest innovations, personalized fittings, and hands-on support tailored to your lifestyle and preferences.


Meet Your Hearing Experts

Ariel Fruendt
Au.D.
Co-Owner and Clinical Audiologist
Menlo Park

Rachel Appleton
Au.D.
Co-Owner and Clinical Audiologist
Menlo Park

Brook Raguskus
Au.D.
Clinical Audiologist
Los Altos

Ashley Chwastyk
Au.D.
Clinical Audiologist
Los Altos

Ling Zhong
Au.D.
Clinical Audiologist
Menlo Park

Amanda Duren
Au.D.
Clinical Audiologist
Menlo Park

Brianne Mangold
Au.D.
Clinical Audiologist
Menlo Park

Ethan Chen, B.A.
B.A.
Audiology Doctoral Student
Los Altos

Jane H. Baxter
Au.D.
Owner Emeritus and Clinical Audiologist

Deborah Clark
Au.D.
Owner Emeritus and Clinical Audiologist

Ann Mau
Patient Care Coordinator
Menlo Park

Jasmine May
Patient Care Coordinator
Menlo Park

Jana Jacobs
Patient Care Coordinator
Los Altos

Brian Kajita
Audiology Assistant
Menlo Park

Kirstin Chang
Audiology Assistant
Los Altos

Janna Dumlao
Audiology Assistant
Menlo Park

Diana Gutierrez
Audiology Assistant
Los Altos

Kassie Walder
Patient Care Coordinator
Los Altos

Jessie Johnson
Director of Outreach and Special Projects

Heather Chapman
Administrative Assistant

Steve Beck
Operations Manager

Garrett Canavero
Operations Assistant & IT Support
Meet Your Hearing Experts

Ariel Fruendt
Au.D.
Co-Owner and Clinical Audiologist
Menlo Park

Rachel Appleton
Au.D.
Co-Owner and Clinical Audiologist
Menlo Park

Brook Raguskus
Au.D.
Clinical Audiologist
Los Altos

Ashley Chwastyk
Au.D.
Clinical Audiologist
Los Altos

Ling Zhong
Au.D.
Clinical Audiologist
Menlo Park

Amanda Duren
Au.D.
Clinical Audiologist
Menlo Park

Brianne Mangold
Au.D.
Clinical Audiologist
Menlo Park

Ethan Chen, B.A.
B.A.
Audiology Doctoral Student
Los Altos

Jane H. Baxter
Au.D.
Owner Emeritus and Clinical Audiologist

Deborah Clark
Au.D.
Owner Emeritus and Clinical Audiologist

Ann Mau
Patient Care Coordinator
Menlo Park

Jasmine May
Patient Care Coordinator
Menlo Park

Jana Jacobs
Patient Care Coordinator
Los Altos

Brian Kajita
Audiology Assistant
Menlo Park

Kirstin Chang
Audiology Assistant
Los Altos

Janna Dumlao
Audiology Assistant
Menlo Park

Diana Gutierrez
Audiology Assistant
Los Altos

Kassie Walder
Patient Care Coordinator
Los Altos

Jessie Johnson
Director of Outreach and Special Projects

Heather Chapman
Administrative Assistant

Steve Beck
Operations Manager

Garrett Canavero
Operations Assistant & IT Support
Meet Your Hearing Experts

Ariel Fruendt
Au.D.
Co-Owner and Clinical Audiologist
Menlo Park

Rachel Appleton
Au.D.
Co-Owner and Clinical Audiologist
Menlo Park

Brook Raguskus
Au.D.
Clinical Audiologist
Los Altos

Ashley Chwastyk
Au.D.
Clinical Audiologist
Los Altos

Ling Zhong
Au.D.
Clinical Audiologist
Menlo Park

Amanda Duren
Au.D.
Clinical Audiologist
Menlo Park

Brianne Mangold
Au.D.
Clinical Audiologist
Menlo Park

Ethan Chen, B.A.
B.A.
Audiology Doctoral Student
Los Altos

Jane H. Baxter
Au.D.
Owner Emeritus and Clinical Audiologist

Deborah Clark
Au.D.
Owner Emeritus and Clinical Audiologist

Ann Mau
Patient Care Coordinator
Menlo Park

Jasmine May
Patient Care Coordinator
Menlo Park

Jana Jacobs
Patient Care Coordinator
Los Altos

Brian Kajita
Audiology Assistant
Menlo Park

Kirstin Chang
Audiology Assistant
Los Altos

Janna Dumlao
Audiology Assistant
Menlo Park

Diana Gutierrez
Audiology Assistant
Los Altos

Kassie Walder
Patient Care Coordinator
Los Altos

Jessie Johnson
Director of Outreach and Special Projects

Heather Chapman
Administrative Assistant

Steve Beck
Operations Manager

Garrett Canavero
Operations Assistant & IT Support
Request a Callback
Have a question? We’ll call you!
Simply request a callback through this form, and we’ll call you for a short and friendly no-obligation conversation to answer your questions and offer our expert advice.
Don’t want to wait? Then why not call us at your nearest office
Menlo Park
3555 Alameda de las Pulgas, Suite 100, Menlo Park, CA 94025

Los Altos
496 First Street, Suite 120, Los Altos, CA 94022

Request a Callback
Have a question? We’ll call you!
Simply request a callback through this form, and we’ll call you for a short and friendly no-obligation conversation to answer your questions and offer our expert advice.
Don’t want to wait? Then why not call us at your nearest office
Menlo Park
3555 Alameda de las Pulgas, Suite 100, Menlo Park, CA 94025

Los Altos
496 First Street, Suite 120, Los Altos, CA 94022

Request a Callback
Have a question? We’ll call you!
Simply request a callback through this form, and we’ll call you for a short and friendly no-obligation conversation to answer your questions and offer our expert advice.
Don’t want to wait? Then why not call us at your nearest office
Menlo Park
3555 Alameda de las Pulgas, Suite 100, Menlo Park, CA 94025

Los Altos
496 First Street, Suite 120, Los Altos, CA 94022

Opening Times
Monday: 9:00am – 7:00pm
Tuesday: 9:00am – 7:00pm
Wednesday: 8:30am – 5:45pm
Thursday: 8:30am – 5:45pm
Friday: 9:00am – 4:45pm
Saturday: Closed
Opening Times
Monday: 8:30am – 5:15pm
Tuesday: 8:30am – 5:15pm
Wednesday: 8:30am – 5:15pm
Thursday: 8:30am – 5:15pm
Friday: 8:00am – 4:00pm
Saturday: Closed
Opening Times
Monday: 9:00am – 7:00pm
Tuesday: 9:00am – 7:00pm
Wednesday: 8:30am – 5:45pm
Thursday: 8:30am – 5:45pm
Friday: 9:00am – 4:45pm
Saturday: Closed
Opening Times
Monday: 8:30am – 5:15pm
Tuesday: 8:30am – 5:15pm
Wednesday: 8:30am – 5:15pm
Thursday: 8:30am – 5:15pm
Friday: 8:00am – 4:00pm
Saturday: Closed
Opening Times
Monday: 9:00am – 7:00pm
Tuesday: 9:00am – 7:00pm
Wednesday: 8:30am – 5:45pm
Thursday: 8:30am – 5:45pm
Friday: 9:00am – 4:45pm
Saturday: Closed
Opening Times
Monday: 8:30am – 5:15pm
Tuesday: 8:30am – 5:15pm
Wednesday: 8:30am – 5:15pm
Thursday: 8:30am – 5:15pm
Friday: 8:00am – 4:00pm
Saturday: Closed
©2025 Pacific Hearing Service. All Rights Reserved.
©2025 Pacific Hearing Service. All Rights Reserved.
©2025 Pacific Hearing Service. All Rights Reserved.
















