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


Phone Number: 520-393-6357  

                                                            HAPPY NEW YEAR!

            We look forward to serving you and your pets in 2024

Pet Emergency? Call us right away at 520-393-6357! We are not a 24/7 emergency clinic, however we will be able to direct you to the next step.

We look forward to serving you and your furry family members.


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 over 30 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.

**In order to provide the utmost quality of patient care while providing safety to the staff and patients along with efficiency, we perform all services in the treatment area**

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.

*Ask us about our boarding!


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

1060 West Beta St.
Green Valley, AZ 85614

New patients receive HALF OFF their exam at first visit. Limit 1 half off 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

  • Kayla N
    Hospital 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 in February of 2016 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 9 year old Cavalier King Charles Spaniel, 'The Boog Man', a 2 year old Cattle Dog Mix, Angus, and her 2 year old cat, Baby Ennis. Kayla recently welcomed a 16 year old retired team roping Quarter horse named Marlin, also known as Big Red. Their weekends now consist of trail riding; no more cows to rope!. Kayla also recently welcomed a 3 year old Quarter Horse to her herd; Derringer.

    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. 

  • Dr. Tim Overbey
    DVM - Chief of Staff

    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.

    In 2012 he became Practice Owner.

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

    Dr. Overbey lives in Tucson with his two cats; Pequod and Claud. In his free time, he enjoys playing soccer, cycling, reading, & grilling.

  • Dr. Barry Wilkinson
    Associate DVM

    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 D.V.M.in 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
  • Dr. Jessica-Brooke Jamboretz
    Relief DVM

    Bio Coming Soon!

  • Ellen S
    Veterinary Technician/Technician Supervisor

    hi! I’m Ellen ☺️ I graduated high school in 2007 and immediately went into the vet field as a technician. After being a technician for 1.5 years I became more involved in the surgical part of the field which I immediately fell I love with and then became practice manager of the clinic I started with. I have Been in the veterinary field for 15 years I started at duval animal hospital May of 2019 after taking a couple years off to stay home with my daughter. I'm a single mom of 2 amazing little ones, 9 year old and 6 year old, we love doing anything out doors and spend all our free time with friends and family.

  • Amanda L
    Veterinary Assistant

    Hi my name is Amanda. I was born and raised in Bay City, Michigan and have
    moved around since I was 19. I have lived in Michigan, Colorado, Texas and
    currently here in Sahuarita, AZ. I share my house with my husband Jasen and our
    daughter Lilah. We have 4 animals; 3 dogs (Dakota, Willow, and Tucker) and 1
    cat (Oliver). When I am not at work, I spend all my time with my family. We
    love finding new restaurants to eat at, fishing, hiking or really anything

  • Andrea E
    Veterinary Assistant

    Andrea was born and raised in the Southern Border town of Nogales, Arizona and has always wanted to work with animals for as long as she can remember. Her passion for animals goes beyond not only helping them but further understanding the medicine behind helping them. Growing up with cats, dogs, birds, and turtles, Andrea never forgot the deep connection and love she had from those childhood pets. After graduating from Nogales High School she went on to complete her certification in Veterinary Assistant at Pima Medical Institute in 2020. She has enjoyed the past couple of years meeting and helping pets and their families live happier and healthier lives. When not in the clinic you can find Andrea reading, hiking, and spending time with her cats Mochi, Momo, Evie, Nala, and Little Leo.

  • Jessica W
    Veterinary Assistant

    Bio Coming Soon!

  • Gabriel G
    Veterinary Assistant

    Bio Coming Soon!

  • Andrea N

    Bio Coming Soon!

  • Deborah M
    Part-Time CSR

    Bio Coming Soon!

  • Lauren G
    Boarding Attendant

    Bio Coming Soon!


Find us on the map

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





Featured Articles

Read about interesting topics

Newsletter Signup

Sign up for more articles


Read What Our Clients Say

  • "Coming Soon!"