Our Veterinary Team
At Island Cats Veterinary Hospital, our dedicated veterinarians in Mercer Island, WA, and skilled veterinary staff are passionate about providing the highest level of feline-focused care. We believe in a gentle, low-stress approach tailored to the unique needs of cats and their owners.
Meet Our Veterinarians in Mercer Island, WA
Our experienced vets in Mercer Island bring years of expertise, a deep understanding of feline medicine, and a commitment to compassionate care. Learn more about the veterinarians and staff who make Island Cats Veterinary Hospital a trusted name in feline healthcare.
Our Veterinarians
Dr. Timarie Simmons, DVM
Lead Veterinarian
Feline Medicine & Surgery | Brachycephalic Breeds | Client Education
Dr. Simmons has been practicing veterinary medicine since 1998. She has a lifelong passion for feline health and well-being. With experience in exotic, canine, and feline medicine, she has chosen to dedicate her career entirely to cat care, ensuring a stress-free and compassionate veterinary experience. Dr. Simmons strongly believes in educating pet owners to help them make informed decisions about their cat’s healthcare.
Dr. Valerie Hargett, DVM, MS
Associate Veterinarian
Geriatric & Internal Medicine | Diagnostic Problem-Solving | Client Communication
Dr. Hargett brings over 22 years of experience in veterinary medicine, specializing in geriatric feline care, internal medicine, and complex case management. She is passionate about helping aging cats maintain a high quality of life and enjoys working closely with pet owners to ensure their cats receive personalized, effective treatment plans.
Dr. Colleen Cassidy, DVM
Associate Veterinarian
Feline Internal Medicine | Ultrasonography | Long-Term Wellness Care
Dr. Cassidy has extensive experience in small animal general practice, with a special focus on feline-only medicine. Her expertise in ultrasonography and internal medicine allows her to provide advanced diagnostic and treatment options for cats with complex health conditions. She values long-term patient relationships and works closely with cat owners to ensure their pets receive the best care throughout every stage of life.
Our Veterinary Support Team
At Island Cats Veterinary Hospital, our skilled veterinary support team plays a critical role in feline patient care. From assisting in cat dentistry, surgery, and diagnostics to providing client education and compassionate support, our team is dedicated to your cat’s health and well-being.
Licensed Veterinary Technicians & Veterinary Support Staff
Hayla
Licensed Veterinary Technician
Hayla has been part of the Island Cats team since 1999. She brings years of experience and a deep passion for feline behavior, nutrition, and patient care. She assists in dentistry, radiology, and surgery, ensuring the highest standard of care for every patient.
Naomi
Veterinary Technician
A Washington State University graduate, Naomi is known as the “Cat Whisperer” for her ability to keep even the most anxious cats calm. She has a strong background in feline rescue and rehabilitation, making her a valuable asset to our team.
Client Care & Administrative Team
Kayla
Client Care Coordinator
Kayla joined Island Cats in 2022 and is passionate about providing exceptional client service and ensuring every pet owner feels supported. As a dedicated cat lover, she enjoys helping pet parents navigate their feline’s healthcare journey.
Why Choose Our Veterinary Team in Mercer Island, WA?
Feline-Exclusive Expertise
Our vets in Mercer Island specialize in cat health, ensuring feline-friendly care.
Compassionate, Stress-Free Approach
We use low-stress handling techniques to make vet visits easier for your cat.
Advanced Veterinary Care
From preventative care to specialized diagnostics, we offer comprehensive feline healthcare.
Trusted by the Community
We server Mercer Island, Bellevue, Seattle, and surrounding areas with expert cat care.
Get in Touch
We proudly serve the pets of Mercer Island, Bellevue, Seattle, Redmond, Renton, Sammamish, Issaquah, Kirkland, and Bothell. We understand the unique psychological and physical characteristics of cats and strive to maintain an environment focused on minimizing stress and illness in our feline patients.