Meet the friendly staff at Hayden Meadows Pet Clinic!


Dr. Greg Castle


Dr. Castle is a 1989 graduate of Oregon State and Washington State University. He has owned the clinic since 1991. His interests include surgery, dermatology, and business/practice management. He is a member of the Oregon veterinary association and also the AVMA. Dr. Castle and his family have dogs named Romeo, Oliver, Stella a cat named Rocky. In his spare time, Dr. Castle likes to spend time with his family and participate in various sports.


Dr. Molly Williams


My name is Molly Williams and I would like to tell you a little about myself and the way I practice medicine. I graduated with a Doctor of Veterinary Medicine degree from Ohio State University in 1992. After practicing two years in Ohio, my husband and I decided to move to Oregon (the state both my parents grew up in and where many of my relatives remain). So we packed up the dog (Rudy) and cat(T) in a U-Haul van and set out for Oregon where we’ve remained. We now have three growing girls and our dog Bingo and cat Pebbles.

Like all veterinarians I was trained in Western medicine and techniques. I have seen great benefits from traditional medicine but also side effects and limitations. Over the past year I have begun to explore(in great depth)alternative medicine and techniques. Currently I am enrolled in the Animal Natural Health Care course in Veterinary Homeopathy taught by Richard Pitcarin, DVM (author of Complete Guide to Natural Health Care for Dogs and Cats, a book I highly recommend!) and am practicing homeopathy for clients who have an interest. I am scheduled to take a course in Veterinary Orthopedic Manipulation (a way to diagnose and treat a wide variety of lameness and nerve problems caused by vertebral subluxations) in August (

Nutrition is also of interest to me and I am hearing reports of the benefits of raw meat diets for dogs and cats. My goal as your veterinarian is to work with you to help find the right medical treatment for your family. I’ve seen benefits from alternative techniques and am very excited to offer them to you. I can offer advice and my humble opinion, but ultimately, it is your decision how to treat your beloved companion.

Currently I’m at Hayden Meadows Pet Clinic on Monday, Tuesday, Thursday, Fridays. Please call me anytime to ask questions or discuss your pet’s health. If you leave me a message I’ll get back to you on my next day in the office.

Thank you for loving your pet, they are wonderful gifts.




Education: Carrington College of Portland

Hometown: Portland, OR

Pets: Morgan, Ruby

Adriana is the Manager at Hayden Meadows. She has a great, positive attitude and is a hard worker. She moved back to Oregon from Tennessee in 2013 and has been with us since. Starting as a technician she has developed in all areas of the clinic, working as the Office Manager, receptionist, technician, and assisting in surgeries. If one thing is guaranteed is that she always has a smile on her face with a bubbly personality to match. Her pack consist two cats, Morgan and Ruby who love one another dearly. She looks forward to servicing you and your furry family members.



Receptionist/ Veterinary Assistant

Education: Carrington College of Portland

Hometown: Portland, OR

Pets: Rita 

Heather is our receptionist who came to us shortly after graduating from Carrington College in 2011. As a Portland native she enjoys spending her time outdoors, whether getting out with friends or exploring the city she always has a smile on her face and a positive attitude.  Heather prides herself on providing quality and efficient care, as well as building a bond with their families. Whether that means taking your call; addressing any concerns and questions, including scheduling or helping along the doctor to provide hands on help to better care for your companion. Heather cannot wait to welcome you into our clinic with her constant smile and welcoming disposition 

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Office Hours

Our Regular Schedule

Hayden Meadows Pet Clinic


8:00 am-5:30 pm


8:00 am-6:30 pm


8:00 am-5:30 pm


9:00 am-6:30 pm


9:00 am-5:30 pm