Meet Our Team

  • Dr.
    Pat Echolds
    Dr. Pat Echolds grew up in Yorba Linda, California and at a very young age he felt a personal calling to dedicate his life to helping animals and his community. This led him to pursue and achieve his bachelor's degree in biology and chemistry at University of San Diego. From there he attended veterinary school at Western University of Health Sciences in Pomona, California. In 2007 he graduated with honors as a member of Phi Zeta, the honor society of veterinary medicine. Class of 2007 was the inaugural class of Western University's College of Veterinary Medicine, the newest and most contemporary veterinary college in the nation. After graduating, Dr. Echolds practiced veterinary medicine in San Clemente, California for nearly five years, managing a vast array of canine and feline medical and surgical cases. Over the years Dr. Echolds developed a vision of opening a progressive, state of the art veterinary practice founded on the principles of personalized care and ethical service. He also envisioned that the hospital would have what he calls a 'good, old fashioned family doctor practice' feel to it. This vision was realized in 2011 with the opening of Rancho Niguel Animal Hospital.

  • Dr.
    Justin J. Greco DVM, Diplomate, ACVS

    Dr. Greco is our Board certified veterinary surgeon.  He is a native of southern California and founded Precision Veterinary Surgery in 2016.  He performs specialized procedures at our practice. He offers our patients the best referral/university level surgical service possible by an experienced, board certified surgeon, and makes the experience as pleasant as possible for the client and the patient!

    Dr. Greco has been board certified in veterinary surgery since 2007. He is a 2002 Phi Zeta graduate of the School of Veterinary Medicine at the University of California, Davis. Upon graduation, he completed a rotating internship at the University of Pennsylvania, School of Veterinary Medicine. He received his formal surgical training at the Animal Medical Center, in New York City, the oldest and most established post graduate veterinary training program in the country.  After completing his surgical residency he went on to become a lecturer in surgery at the University of Pennsylvania's School of Veterinary Medicine and stayed on as a staff orthopedic surgeon and then adjunct assistant professor for 4 years.  Dr. Greco is very skilled and he has a big compassionate heart!

  • Chi Le
    Veterinary Assistant

    Chi received her Bachelor’s Degree in Biology at UCLA and was also a member of the UCLA Chorale, UCLA Rowing, Community Outreach For Prevention and Education (COPE), and UCLA Geriatrics team. Her passion for environmental conservation led her to rehabilitate hundreds of oiled and injured seabirds at International Bird Rescue in San Pedro, present her research on Harmful Algal Blooms at the National Wildlife Rehabilitators Association Symposium, and educate the community about Zero Waste Lifestyle at LA Bird Day and the OC Fair. Chi is a registered yoga teacher, teacher, surfer, PADI diver, zero waste advocate, and sustainable farmer with World Wide Opportunities On Organic Farms (WWOOF) working throughout Italy, France, and Hawaii. She loves spending time with her pitbull Baloo and every patient at Rancho Niguel Animal Hospital!

  • Summer Carreon
    Veterinary Assistant

    Summer is an Orange County native. Currently a double-major student at Saddleback in Biology and Chemistry, she’s also enrolled in a program to receive her Veterinary Technician degree. Her passion for animals coincides with her love for medicine, making her ultimate dream to become an Equine Veterinarian in Scotland. Hobbies she enjoys during her free time are reading and riding her Harley motorcycle. Summer is a natural with pet care and she is an amazing team player.

  • Sarah Perez
    Practice Manager

    Sarah was born and raised in SoCal and is currently going to school for her nursing degree. She started here at RNAH in May of 2018 but has many years of experience working in the veterinary field and loves working with animals. Outside of the office, you will find Sarah spending time with her husband and family, going to the movies, the pool or just reading a good book. Sarah and her husband are avid travelers and love getting away when they have time. Her family pets include: Duke, a tank of a yellow Lab and Cooper, a Dachshund that loves snuggling.

  • Amanda Davidheiser

    Amanda was born and raised in SoCal and is currently going to school for her communications degree. She started working at RNAH in November 2019 and has years of experience volunteering with animals. When she is not working, she loves spending time with her two yorkies Otto and Roxy. She also enjoys riding her motorcycle and going to the beach.

Welcome New Patients!

We look forward to meeting you and your pet!


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Office Hours

Our Regular Schedule

Rancho Niguel Animal Hospital


8:30 am-5:30 pm


8:30 am-5:30 pm


8:30 am-5:30 pm


8:30 am-5:30 pm


8:30 am-3:00 pm