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Welcome to Duval Animal Hospital
Your Veterinarian in Green Valley,AZ
Call us at 520-393-6357

Pet Emergency? Call us right away at 520-393-6357!


We are a full service small animal veterinary hospital located in Green Valley, Arizona. Our two full time veterinarians, Dr. Tim Overbey and Dr. Barry Wilkinson, specialize in the treatment of cats and dogs. They have 25 years combined experience in veterinary medicine.

Our hospital offers the most cutting-edge medicine available and has state of the art equipment, including a recently added class IV Companion therapy laser. Additionally, we have two full digital x-ray suites, one for dental procedures and one for full-body diagnostics. Digital radiology allows us the opportunity to routinely get input from board certified radiologists, when warranted, via telemedicine. Our clinical lab utilizes the Idexx Catalyst Dx and Laser Cyte blood analyzers allowing us to obtain immediate blood work results for our critical patients that require immediate attention. We also have an established relationship with a variety of board certified specialists that we can use for referral when warranted. We offer convenient hours and our dedicated and caring staff strives to give you and your furry family member the best possible care and experience.

Please browse our website which offers a number of resources for pet owners. If you have any questions or would like to make an appointment, please call us at (520) 393-6357.

Need a prescription refilled? Please give us a call 3-5 days in advance so we can ensure we have what you need in stock.

We will be closed the following days in observance of the holidays:

Christmas Eve, December 24th & Christmas Day, December 25th.

We will be open half a day from 8:00am to 12:00pm New Years Eve; December 31st & closed the following day, New Years Day; January 1st.

Tim Overbey
Green Valley Veterinarian | Duval Animal Hospital | 520-393-6357

1060 West Beta St.
Green Valley, AZ 85614

New patients receive FREE exam at first visit. Limit 1 free exam per client.

Sign up using the form to take advantage of this exclusive offer. Coupon must be printed and presented at time of service.

Meet Our Skilled Team

Learn Who We Are

  • Dr. Tim Overbey
    DVM - Veterinarian/ Owner

    Dr. Tim Overbey received his B.A. in Zoology from the University of California, Santa Barbara in 1993. He then went on to receive his DVM from the University of California, Davis in 1999.  Dr. Overbey practiced in San Mateo, California, before relocating to Arizona in 2005.  He practiced in Tucson until 2010 when he joined the team at Duval Animal Hospital.

    Areas of professional interest include internal medicine and soft tissue surgery.

    Dr. Overbey lives in Tucson with his three cats, and in his free time, enjoys playing soccer, cycling, and reading.

  • Dr. Barry Wilkinson
    DVM - Veterinarian

    Dr Barry Wilkinson earned his B.S degree in Veterinary Science and Microbiology from the University of Arizona in 1999 where he was named the Outstanding Senior of his class. He subsequently attended Colorado State University where he received his 2003 , graduating in the top 1% of his class,  just 2 months shy of his 50th birthday .He graduated from both of these institutions Summa Cum Laude .

    While Dr. Wilkinson has many canine patients he has a special interest in feline medicine and has been a member of The American Association of Feline Practitioners for the past 15 years. While in vet school he served as an officer in the organisation for several years. 

    Read More
  • Kayla
    Practice Manager/ Technician

    Kayla was born in Dallas, TX and moved to Greensboro, NC as a small child where she grew up and obtained her BS in Business Administration at the University of North Carolina at Greensboro in 2014. Kayla spent her college years working in retail as a sales associate where she quickly became an assistant manager.

    In January 2016 she relocated to Arizona to be closer to her family and to ultimately pursue her life long dream of becoming involved in the veterinary field. Kayla started at Duval Animal Hospital as a Veterinary Assistant and has worked her way up to Veterinary Technician and now Practice Manager.

    In her free time she enjoys grilling, spending time with friends and family and being outdoors.

    Kayla currently shares her home with her 7 year old Cavalier King Charles Spaniel, 'The Boog Man', a 7 month old Cattle Dog Mix, Angus, and her year old cat, Baby Ennis.

    Kayla is very excited to be using her back ground in business and experience in the veterinary field to continue to make a difference in the lives of companion animals and their owners. 

  • Mandy
    Veterinary Technician

    Mandy was born in Tucson.  When she was seven or eight, she and her family moved to Mississippi and then to Tennessee.  When she was ten, they moved to San Diego where she spent the rest of her childhood.  In 2009, Mandy moved back to Green Valley, Arizona to get a new start on life.  

    In her spare time, Mandy enjoys activities such as yoga, billiards, target practice, and spending time outdoors off-roading with friends.

    Read More
  • Amber
    Veterinary Technician

    Bio Coming Soon!

  • Christina
    Part Time Veterinary Technician

    Bio Coming Soon!

  • Janelle

    Janelle grew up in Massachussetts and moved here four years ago. She enjoys crafting and working with stained glass. 

    She has five kids who have four legs, have fur, and bark. Apple and Rigby are from TALGV, Hans and Pee-Wee, were taken from the streets of Nogales, Arizona and Jack, was brought with her from Massachussetts. They each have their own personalities and are constantly making her laugh.

  • Jennifer

    Bio Coming Soon!

  • Mackenzie

    Bio Coming Soon!

  • Cheyenne
    Part Time Veterinary Assistant

    Bio Coming Soon!

  • Karla
    Veterinary Assistant

    Bio Coming Soon!

  • Hilary
    Kennel Technician

    Bio Coming Soon!

  • Laurel
    Kennel Technician

    Bio Coming Soon!


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Office Hours


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-12:00 pm



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