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Welcome to Twin Lakes Veterinary Hospital
Your Veterinarian in Federal Way, WA
Call us at 253-839-7880

*Please refer to our Facebook page for more current updates*

We understand the concerns that Coronavirus has brought to the area and we want to make you aware of the steps we are taking to protect our valued patients, clients and staff.

Currently, there is no evidence that companion animals can be infected with or spread COVID-19. We recommend you refer to the Centers for Disease Control 7 Prevention (CDC) for more information.

We are now implementing curb-side service for all appointments, food, and medication pick-ups. When you arrive at the hospital please call or text us at (253) 839-7880 and we’ll be right out to escort your pet in while you wait in your vehicle. Our doctors will give you a call and go over all your questions.

The wellness of you, your pets, and our staff is our number one priority.

Thank you in advance for your understanding,

Dr. Mike Mizumoto and Staff

Twin Lakes Veterinary Hospital new temporary hours (Subject to change):


Monday- Friday: 8:00am-6:00pm

Tuesday: Closed from 12pm-2pm

Saturday: Closed until further notice starting 3/28/2020

 Sunday: Closed

Receive Pet Care from Home with Televet!

Twin Lakes Veterinary Hospital is now offering remote healthcare services with TeleVet! With the TeleVet mobile app you can easily send virtual consultation requests to us whenever your pet is sick or injured.

To get started, download the TeleVet app on the iTunes or Google Play store and create your personal profile and your pets (pictures encouraged!). When you need us, create a consultation request detailing your pet’s issue. Upload any pictures or videos, instant message, and talk with us face to face through a video conference call to help get your pet feeling better again. We look forward to talking with you soon.

*Only available for current Twin Lakes Veterinary Hospital Clients and Patients.



Founded in 1969, Twin Lakes Veterinary Hospital has long been a center for exceptional veterinary care. As an American Animal Hospital Association (AAHA) certified clinic, we pride ourselves in our commitment to excellence in veterinary medicine. Over the years, our hospital has expanded and remodeled its facilities - staying current with new technologies and services.

We believe in happy, healthy pets, and we value preventative medicine as it can extend the life of your pet. Regular check-ups help detect subtle changes in your pet's health before major problems occur. We deliver individualized treatment for every pet and we strive to make every visit a positive experience.

Thank you for giving us the opportunity and entrusting us with your pet's health management. We are available during business hours for questions regarding all aspects of pet health, and feedback is always welcomed. You and your pet will be treated as family here at Twin Lakes Veterinary Hospital, and will receive the best care that the veterinary profession has to offer.

Again, thank you for choosing us, and welcome to our Twin Lakes Veterinary Hospital family!


Dr. Michael Mizumoto and the Staff of Twin Lakes Veterinary Hospital

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In case of an after-hours emergency contact:

Summit Veterinary Referral Center (253) 983-1114
Blue Pearl (Tacoma) (253) 474-0791
Blue Pearl (Renton/Seattle) (206) 364-1660

Twin Lakes Veterinary Hospital

1060 SW 320th St

Federal Way, WA 98023


Office Hours


8:00 am-7:00 pm


8:00 am-12:00 pm

2:00 pm-7:00 pm


8:00 am-7:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-2:00 pm



Meet the Veterinarian

  • Mike Mizumoto, DVM
    Hospital Director and Owner

    Dr. Mike Mizumoto, hospital director and owner, was born and raised in Seattle, WA. He received his B.S. degree (1971) and Doctorate in Veterinary Medicine (1975) from Washington State University. Upon graduation, he was employed as an associate veterinarian at Twin Lakes Veterinary Hospital for six years before taking ownership in 1981.

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  • Diane Driscoll, DVM
    Medical Director

    Dr. Diane Driscoll became part of the Twin Lakes Veterinary Hospital team in 2006. She received her Bachelor's degree in Biology and German from Arizona State University and her Doctorate in Veterinary Medicine from Colorado State University in May of 2006.

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  • Robert Mizumoto, DVM

    Dr. Rob Mizumoto earned his Doctorate in Veterinary Medicine from Washington State University in May 2012 and attended University of Portland for his Bachelor degree in Biology. He enjoys all types of surgery, internal medicine, and has a special interest in ophthalmology.

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  • Eunkyung Park, DVM

    Dr. Park received her Bachelor's degree in Textile Engineering from HanYang University and her Doctorate in Veterinary Medicine from Kangwon National University in South Korea. After graduation, Dr. Park and her husband (Jong) decided to start life in the beautiful Pacific Northwest.

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  • Gina Au, DVM

    Dr. Au was born and raised in Honolulu, Hawaii. She received her Bachelor’s degree in Biology at Duke University and Doctorate in Veterinary Medicine at Washington State University. She moved to Western Washington in 2019 to join Twin Lakes Veterinary Hospital.

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Hear From Happy Pet Owners

  • "Excellent care for my dogs. The staff is friendly, compassionate,knowledgeable, and helpful. My dog Smokey was diagnosed with diabetes. I was very nervous about giving the medication and monitoring his treatment. The doctor and tech were very helpful- they spent over an hour answering all of my questions and walking me through the necessary treatment. I left feeling confident in being able to give him insulin at home."
    Anika F.

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