114 2nd St Box 326 • Langley, WA 98260 • (360) 331–8090

Emergencies emergency

All Whidbey Island Pets Are Welcome
at the Animal Hospital by the Sea

new clients

Dr. Jean Dieden and the staff of The Animal Hospital by the Sea are excited to meet you and your special dogs and cats. Dr. Dieden takes the time to get to know each and every client and pet personally so that we can work together to deliver the best care possible. We appreciate you stopping by and look forward to providing you and your pets with exceptional service and care.

The Animal Hospital by the Sea is a full-service companion animal clinic, offering pet wellness care for all your pet’s life stages, veterinary surgery, pet dental care, veterinary reproductive services, pet nutrition counseling, and an extensive in-house diagnostic laboratory and pharmacy. We also maintain a good working relationship with area veterinary specialists to keep you connected with the best treatment possible for all your pets.


While we do occasionally accept walk-in patients, we highly recommend scheduling an appointment to avoid a lengthy wait and/or the inconvenience on others. (Exceptions will be made in the case of emergencies.) All pets must be in a carrier or on a leash for everyone’s safety. If you need to borrow a leash or carrier, just let us know.

In preparation for your first visit, we graciously request that you fax, mail, or email your pet’s previous medical records to our hospital in advance, so that we may review them prior to your scheduled time. If you are a new client, you might consider downloading and filling out our new client intake form as well. This will allow us to speed the check-in process and more quickly concentrate on tending to your pet. You may scan and submit this form via email at info@animalhospitalbythesea.com or you may also fill out our online form to submit your information directly to our reception desk.

Our introductory appointments will typically last 40–50 minutes. This time is required to conduct a thorough exam of your dog or cat as well as learn about you, your pets, and your lifestyle, details that will allow us to recommend veterinary care that is specifically tailored to your pet’s individual needs.

Payment and cancellation policy

Payment is due when services are rendered. We accept all major credit cards, debit cards, cash payments, and Citi Health Card and CareCredit. Personal checks are not accepted.

For information on our payment policies and pet insurance, please visit our payment options page.

If you are not able to make your appointment, we appreciate notice 24 hours in advance. This way we will be able to assist other patients in line.

We are excited to get to know you and your pet companions! For further information regarding making an appointment or for directions to our hospital, please visit the contact us page. We look forward to meeting you!

New Clients/Referrals
Animal Hospital by the Sea
114 Second Street, Box 326
Langley, WA 98260
Phone: (360) 331–8090
Fax: (360) 282–6195
Monday: 8 a.m. – 7 p.m.
Tuesday: 8 a.m. – 6 p.m.
Wednesday: 8 a.m. – 6 p.m.
Thursday: 8 a.m. – 7 p.m.
Friday: 8 a.m. – 6 p.m.
Saturday: 9 a.m. – 2 p.m.
Sunday: Closed

Animal Hospital by the Sea rocks! Jean is a fabulous veterinarian, the environment is warm and relaxing and there is great communication between Jean and her staff. We are all so very happy to have found them!
Jodi Starcevich, Matt Costello, Groovy Roux and Salinger

Dr. Dieden’s surgical technique allowed our dog a quick and trouble free spay recovery without the stress and discomfort of an Elizabethan collar (head cone).  We are very grateful to Dr. Dieden and staff who assisted with Rena’s surgery.
Bob and Jayme Holmberg

Meshuggeneh was the most relaxed cat during her visit to Dr.Jean that I think she would have stayed longer. Thank you both Holly and Dr. Jean for your time and help. Best find in Langley... a great vet!
Jeanniemaria Barbour

Jean and staff Thank you so very much for the care given to our Lab, Lily We are so appreciative of your time, concern and love given to our pet. Lily is forever grateful and so are her humans, Nina and Chris We hope the next visit will be just the standard check up and not an emergency, again thank you for the excellent care. Animal Hospital By The Sea, you rock!
Chris Skatell

Dory a Golden on the island says thank you.
Louise Long

The staff and Jean are fabulous. We are so lucky to have them on the Island.
DeLaine Emmert

Thank you Dr Jean Dieden for taking such good care of my labrador, Kinsey. Kinsey had a raging hot spot. Thanks to Dr Dieden’s caring and effective treatment, Kinsey is much more comfortable and on the mend.
Lia Bijsterveld

It doesn’t get any better than this animal hospital for care for your pet.  Jean Dieden and her team of Holly and Stacy are top notch and they are genuinely caring.  I also like the fact that this is a animal hospital and part of that terminology means they do their own blood work.
Rob Felding

Dr. Jean held my hand throughout it all and, had it not been for her professional intuition about a prescription Lena was given during emergency treatment, my little girl would not be the happy, healthy kitty she is today. As for how my other cat Dexter feels about Dr. Jean, you can see for yourself around this website.
Susan Hanson