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
Silicon Valley’s Most Trusted Hearing Doctors
Silicon Valley’s Most Trusted Hearing Doctors
Trusted by Tens of Thousands of Amazing Patients, Leading Organizations and Many Local Physicians Since 1977
Trusted by Tens of Thousands of Amazing Patients, Leading Organizations and Many Local Physicians Since 1977

Get In Touch
Location Details
Menlo Park
3555 Alameda de las Pulgas, Suite 100, Menlo Park, CA 94025
Los Altos
496 First Street, Suite 120, Los Altos, CA 94022
PACIFIC HEARING SERVICE
Trusted By Some of the Best Engineers In The World
Our community leads the world in technology.
But as we all know, technology is only part of any solution. What makes Silicon Valley so special is the human intelligence and persistence that strive to make the impossible happen.
The same is true of hearing healthcare.
Although great hearing technology is important, it’s even more important to partner with the right experts who will personally work with you to help you achieve better hearing.
Having cared for tens of thousands of incredible people since 1977, Pacific Hearing Service is the most trusted audiology practice in Silicon Valley, having gained the confidence of patients, leading organizations, and local physicians.
You’ll have the added benefit of working with a team of experts who is passionate about “giving back” through our local nonprofit that helps low-income children and adults in the Bay Area, and through regular humanitarian trips to some of the poorest countries in the world.
If you are concerned about your hearing, please request a no-obligation callback from an expert hearing doctor today, or schedule an appointment for a comprehensive hearing assessment.



Trusted By:

Try Lenire® – Now at Our Clinic
We are proud to now offer Lenire®, the FDA-approved breakthrough treatment for tinnitus. This innovative device uses gentle sound therapy combined with tongue stimulation to retrain the brain and reduce the perception of ringing in the ears.




Try Lenire® – Now at Our Clinic
We are proud to now offer Lenire®, the FDA-approved breakthrough treatment for tinnitus. This innovative device uses gentle sound therapy combined with tongue stimulation to retrain the brain and reduce the perception of ringing in the ears.



How Can We Help?
Ways in Which We’ve Served The Community Since 1977
Advanced Hearing Testing
Prescription Hearing Aid Technology
Tinnitus Treatment

When Was Your Last Hearing Test?
Although we all regularly have our teeth checked, our cholesterol tested, and get a yearly physical, hardly any of us regularly test our hearing.
Yet with 1 in 8 Americans now having some form of hearing loss, we’re passionate about raising awareness of healthy hearing and of the first signs of hearing loss.
Advanced Hearing Testing
Prescription Hearing Aid Technology
Tinnitus Treatment

When Was Your Last Hearing Test?
Although we all regularly have our teeth checked, our cholesterol tested, and get a yearly physical, hardly any of us regularly test our hearing.
Yet with 1 in 8 Americans now having some form of hearing loss, we’re passionate about raising awareness of healthy hearing and of the first signs of hearing loss.
Advanced Hearing Testing
Prescription Hearing Aid Technology
Tinnitus Treatment

When Was Your Last Hearing Test?
Although we all regularly have our teeth checked, our cholesterol tested, and get a yearly physical, hardly any of us regularly test our hearing.
Yet with 1 in 8 Americans now having some form of hearing loss, we’re passionate about raising awareness of healthy hearing and of the first signs of hearing loss.
Hear What Our Patients Have to Say
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A Longstanding Client
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

Rachel Gringorten
Doctoral Audiology Student

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
Office Manager
Los Altos

Akaash Nayak
Patient Care Coordinator
Menlo Park

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

Rachel Gringorten
Doctoral Audiology Student

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
Office Manager
Los Altos

Akaash Nayak
Patient Care Coordinator
Menlo Park

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

Rachel Gringorten
Doctoral Audiology Student

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
Office Manager
Los Altos

Akaash Nayak
Patient Care Coordinator
Menlo Park

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
Our Happy Patients Say
Audiologist Brook Raguskus was fantastic. She explained each segment of the hearing evaluation clearly. A real people person who made me feel entirely at ease. 5 star rating.

Annie A
5 months ago
This is an incredibly talented and professional organization. As a member of the healthcare community, I highly recommend this team for any hearing concerns! Thank You …

Dave H
1 month ago
Excellent! Brook and the team at Pacific Hearing are outstanding. Everyone is incredibly kind, helpful and knowledgeable. If you have any questions concerning your hearing,

Mary S
6 months ago
I have been coming to Pacific Hearing for over 20 years. I have always received top-notch quality care, from competent, highly trained caring providers. Thank you, Brooke you are the best!

Melissa C
6 months ago
Clean and spacious office. Staff very welcoming and friendly. Directions clear and willingness to answer questions. Thorough testing with comfortable seating.

Cheri C
7 months ago
Great place! I came here for ear wax removal. Doctor did a thorough check up and treatment. It was all done in 20 mins. Importantly, doctors and the front desk are so caring and polite!!

Jeevan R
8 months ago
Our Happy Patients Say
Audiologist Brook Raguskus was fantastic. She explained each segment of the hearing evaluation clearly. A real people person who made me feel entirely at ease. 5 star rating.

Annie A
5 months ago
This is an incredibly talented and professional organization. As a member of the healthcare community, I highly recommend this team for any hearing concerns! Thank You …

Dave H
1 month ago
Excellent! Brook and the team at Pacific Hearing are outstanding. Everyone is incredibly kind, helpful and knowledgeable. If you have any questions concerning your hearing,

Mary S
6 months ago
I have been coming to Pacific Hearing for over 20 years. I have always received top-notch quality care, from competent, highly trained caring providers. Thank you, Brooke you are the best!

Melissa C
6 months ago
Clean and spacious office. Staff very welcoming and friendly. Directions clear and willingness to answer questions. Thorough testing with comfortable seating.

Cheri C
7 months ago
Great place! I came here for ear wax removal. Doctor did a thorough check up and treatment. It was all done in 20 mins. Importantly, doctors and the front desk are so caring and polite!!

Jeevan R
8 months ago
Our Happy Patients Say
Audiologist Brook Raguskus was fantastic. She explained each segment of the hearing evaluation clearly. A real people person who made me feel entirely at ease. 5 star rating.

Annie A
5 months ago
This is an incredibly talented and professional organization. As a member of the healthcare community, I highly recommend this team for any hearing concerns! Thank You …

Dave H
1 month ago
Excellent! Brook and the team at Pacific Hearing are outstanding. Everyone is incredibly kind, helpful and knowledgeable. If you have any questions concerning your hearing,

Mary S
6 months ago
I have been coming to Pacific Hearing for over 20 years. I have always received top-notch quality care, from competent, highly trained caring providers. Thank you, Brooke you are the best!

Melissa C
6 months ago
Clean and spacious office. Staff very welcoming and friendly. Directions clear and willingness to answer questions. Thorough testing with comfortable seating.

Cheri C
7 months ago
Great place! I came here for ear wax removal. Doctor did a thorough check up and treatment. It was all done in 20 mins. Importantly, doctors and the front desk are so caring and polite!!

Jeevan R
8 months ago
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

Latest News

What to Do When Hearing Aids Are Not Enough

|
Rachel Appleton
|
Oct 7, 2025

A Journey of Sound: Our Mission to Guatemala and the Importance of Hearing Testing

|
Rachel Appleton
|
Sep 4, 2025

Pacific Hearing Connection Team With Special Olympics Summer Games Healthy Athletes

|
Ariel Fruendt, Au.D.
|
Aug 16, 2025
Latest News

What to Do When Hearing Aids Are Not Enough

|
Rachel Appleton
|
Oct 7, 2025

A Journey of Sound: Our Mission to Guatemala and the Importance of Hearing Testing

|
Rachel Appleton
|
Sep 4, 2025

Pacific Hearing Connection Team With Special Olympics Summer Games Healthy Athletes

|
Ariel Fruendt, Au.D.
|
Aug 16, 2025
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.










