19203 Aurora Ave N
Shoreline, WA 98133
(206) 546-1243


5506 Pacific Avenue
Tacoma, WA 98408
(253) 471-9200

  • Restoring Health & Happiness to Senior Cats Since 1992

COVID19 Response


As our community continues to work together to limit the spread of the COVID-19 virus, we wanted to provide you with information on the precautions that our hospital are taking to ensure the safety of our patients, clients, and employees.

Hospital Cleaning Protocol and Staff Illness:

Our hospital continues to observe the CDC's recommendations on disease prevention, handwashing and cleaning protocols, as well as guidance on managing staff members who may be displaying flu-like symptoms and/or tested positive for COVID-19.

Clients Affected by COVID-19

If you or a member of your household has tested positive for COVID-19, are displaying flu-like symptoms and/or have traveled to a high-risk area within the past 14 days, we ask that you please contact us to reschedule your appointment and discuss your cat's treatment options. 

COVID-19 Risk for Cats

According to the AVMA, CDC, and WHO, there is no current evidence to sugget that pets can become sick from COVID-19 virus or to be a source of infection to humans or other animals. Research is continually underway and we encourage clients to monitor the situation via the AVMA ( or CDC ( websites. 


In order to follow the rule on having less than 10 people gathered in one area, we will be closing our lobby as of March 21st, 2020. If you have an appointment with us you will receive a separate email titled "COVID-19 Precautions and Protocols" that will give you detailed instructions on how we will be handling your cat's arrival. 


As folks understandably have a lot of questions, we are receiving a very high number of phone calls right now. We encourage you to use email ( to communicate with us as we will be able to help you more quickly. We are available by email from 8:00 to 5:00 Monday through Friday. 

Offering the safest, most reliable treatment for Feline Hyperthyroidism

Hyperthyroidism is the most common hormonal disease of cats resulting from excess thyroid hormone, which puts significant and potentially fatal stresses on the body. Radioiodine therapy is the safest and most effective therapy available. It's less risky than surgery and doesn't require medicating your cat daily for years. Most cats stay a couple nights before returning home — happy and healthy.

Making an Appointment

Cost of Treatment

The Hospital Stay

Post-Treatment Guidelines

Cancellation Policy

Please read if your cat’s T4 level is between 12 and 19: Understanding Your Cat’s Semi-Aggressive Hyperthyroidism

Please read if you cat’s T4 level is 20 or higher: Understanding Your Cat’s Aggressive Hyperthyroidism





Thanks to Dr Faythe Vaughan, and her kind staff in Shoreline and Tacoma for giving us at least 5 extra, good quality, years with our buddy, Rocky! He was a rescue cat to begin with, and his good fortune continues! We highly recommend The Feline Hyperactive Thyroid Center for their... read more »

Tacoma, WA

We want to thank you for your extraordinary efforts in looking after our Samson's well being. You took the initiative of a problem we were not aware was even present. We are very, very grateful to all involved in Samson's case. We appreciate the detailed... read more »

Port Townsend, WA

As a member of an animal rescue organization on Vashon Island (VIPP), as well as being a chronic cat owner, I've had many opportunities to visit the Feline Hyperthyroid Treatment Center. Over the past 30+ years, I've taken scores of cats to Shoreline for definitive... read more »

Vashon Island Pet Protectors
Vashon Island, WA

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