Welcome to San Cayetano Veterinary Hospital

Your Veterinarian in Rio Rico,AZ
Call us at (520) 761-8686

Pet Emergency? Call us right away at (520) 761-8686!

San Cayetano Veterinary Hospital is a veterinary hospital that combines modern medicine with old-fashioned caring. We are located in Rio Rico, Arizona and serve the communities of Nogales, Tumacacori, Carmen, Tubac, Patagonia, Sonoita, Amado and Green Valley.

At San Cayetano Veterinary Hospital, we treat your pets like the valued family members they are.

W. Daniel Horton, DVM
Rio Rico Veterinarian | San Cayetano Veterinary Hospital | (520) 761-8686

1133 Circulo Mercado
Rio Rico, AZ 85648

Information about Silver Lining Fund donations for indigent pets may be found under the Payment Options link.


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Office Hours

Our new hours under coronavirus

Rio Rico Office


8:00 am-5:00 pm


7:30 am-5:00 pm


9:00 am-4:00 pm


7:30 am-5:00 pm


Alternating Fridays: either 9:00 am - 4:00 pm, or 8:00 am - 5:00 pm


1st and 3rd of every month by appointment



Meet Our Skilled Team

Learn Who We Are

  • Dr.
    Daniel Horton

    Dr. Horton was born in Salt Lake City, Utah into a family full of scientists and surrounded by animals. There was a goat, rabbits and chickens, as well as the full complement of dogs and cats. Exposure to veterinary medicine as an undergraduate at Utah State University in Logan, Utah solidified an already growing interest and led to the DVM degree (cum laude) through a combined program with Oregon State and Washington State Universities.

  • Rita Kester
    Practice Manager

    Rita was born and raised in Portland, Oregon. She met her husband, Dr. Horton in veterinary school and after several years in practice, went to work for USDA, primarily on the US-Mexico border.  She retired from federal service in 2016 and has since served as practice manager. The Horton-Kester family currently share their home with three talkative cats and two very noisy birds.

  • Norma Leyva
    Office Manager, Veterinary Technician

    Norma was born in Elko, Nevada. She was mostly raised in the Rio Rico/Nogales area. She graduated from Rio Rico High School in 2002. She has been working for the San Cayetano Veterinary Hospital since February 2007. Her family has always kept pets and her father makes saddles for horses. She currently has 12 cats named Lynx, Mini, Purrsy, Cinnamon, Boo, Cyan, Noche, Lovie, Sunny, Romeo, Jadie and Pebbles and 3 dogs named Lia, Petrie and Scrappy.

  • Patricia Ann Hilton
    Marketing Director

    Patricia (Patty) Hilton was born and raised in Clifton, New Jersey – a relatively small community just 10 miles west of New York City, with Mom, Dad, three sisters and Terry the Terrible Terrier. Patty grew up with a love of animals and was taught early on that our household pets were very much a part of the family.

  • Araceli Orozco
    Veterinary Technician

    Araceli was born in Tucson, Arizona but has lived in Rio Rico, Arizona since 1998. She has worked at San Cayetano Veterinary Hospital since July 2004. In addition to continuing her studies at Pima Community College and the University of Arizona, she shares her home with Amigo, a dog adopted from the Humane Society, and an Amazon Parrot named Solovino.

  • Vanessa Garcia
    Veterinary Technician

    Born and raised in Rio Rico, Arizona, Vanessa has always had a passion for helping others – especially animals.  Her career started early in 2011 by volunteering at San Cayetano Veterinary Hospital.  She graduated from high school, then went to college, earning a certificate as a Veterinary Assistant.  She then was hired as a receptionist at SCVH, and is continuing her education for a Veterinary Technician degree, hoping to graduate in 2020 with the support of her mother, father, brother and fellow staff members – whom she considers her second family.  Her current fur babies are Chip, a male miniature Welsh Terrier, four female cats, and three male cats.

  • Erika Gonzalez
    Veterinary Technician

    Erika was born in Tucson, Arizona.  Her family moved to Nogales, Arizona in 2001 and she has lived there since then.  She always wanted to work with animals and had the pleasure of working at the Santa Cruz Humane Society with the cats.  She worked in Tucson for more than a year and now has the pleasure to work with everyone at SCVH.

  • Joyce Roberta Enciso
    Veterinary Assistant

    Joyce was born in Phoenix, Arizona, brought home to Nogales, and raised. She had all of her schooling in Nogales, as well. She has 10 cats, - her daughter-in-law has some of hers at her place, too - 3 dogs, 5 human puppies and nothing else, yet.


Read What Our Clients Say

  • "I have already recommended your hospital and staff to several people and will continue to do so. Thank you all for being such caring and pleasant "animal" people!! MaryAnn"
    Jackson, Maryann
  • "The staff is fantastic!!! Dr. Horton has the greatest patient/pet/care provider presence in the UNIVERSE, and is always looking for alternative solutions when necessary."
    Adams, Amy
  • "The staff is very friendly, they made me feel very comfortable, and I felt like I could ask any question."
    Morales, Lisa & Jorge,

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