Medical Staff

Staff Doctors

Dr. Jay Johnson is the founder and owner of Arizona Exotic Animal Hospital, the Valley’s first animal hospital devoted exclusively to the care of exotic pets. As a boy growing up on the outskirts of Tucson, he was fascinated with exotic pets, especially reptiles. He kept a variety of these unique pets throughout his childhood including snakes, lizards, turtles, tortoises, tarantulas, rabbits, a cockatoo, pigmy goats, as well as more traditional pets like dogs and horses.

Dr. Lamb has always desired to provide good health, happiness and care to all exotic pets. She grew up in Las Vegas, NV. After graduating from UNLV with a B.S. in Biology, she attended veterinary school at the University of Minnesota. After finishing veterinary school she performed a one year internship in avian and exotic medicine followed by a two year residency in avian medicine and surgery.

Dr. Pilny is a native New Yorker but joined Arizona Exotic Animal Hospital by way of Los Angeles, California.  Dr. Pilny is a graduate of the University of Florida’s College of Veterinary Medicine.

Dr. Ruoff grew up in Colorado surrounded by nature, wildlife, and a small zoo of exotic pets.  She earned her bachelor's degree in Biology at Pomona College and her Doctorate of Veterinary Medicine at Western University of Health Sciences. Dr. Ruoff worked as a nurse at an exotic pet exclusive hospital in California before going to veterinary school. Dr.

Dr. Johnson is a native Arizonan and has had a passion and interest in animals, notably reptiles for as long as she can remember.  She worked as certified veterinary technician for 13 years prior to pursuing veterinary school.

Dr. Nick Saint-Erne is a dedicated veterinarian who is passionate about pets, exotic animals, and aquatic veterinary medicine.

Dr. Brown grew up in northern New York and is here to stay in Arizona where the days are warm and sun is bright. She earned her Bachelor’s degree in Zoology at SUNY Oswego before moving on to obtaining her Doctorate of Veterinary Medicine at Cornell University. She has recently completed a rotating internship in small animal and exotic medicine and surgery at VCA Valley Animal Hospital.

Mike Corcoran is a 2008 graduate of the College of Veterinary Medicine at Washington State University (Go Cougs!).


After growing up in Oklahoma, Dr. Wallis moved to New York where he ignited his passion for the improvement of care and conservation of exotic animals by earning a Bachelor’s Degree of Ecology and Evolutionary Biology at the University of Rochester.

Dr. Bignall grew up in Colorado, enamored with the local wildlife.  He spent many of his teenage weekends volunteering with the local raptor rehabilitation rescue and wolf sanctuary. 

Dr. Thulson is excited to meet your scaled, slimy, furry, or feathered friend! She obtained her Bachelor’s degree in Biology from Baylor University in Waco, Texas. During her undergraduate studies, she was involved in porpoise skeleton reconstruction, spent time as a zookeeper, and rehabilitated orphaned squirrels.

Dr. Horwitz grew up in Orange County, California. Even from a young age, she loved animals, especially reptiles. After completing her degree in Biology from the University of California, Santa Cruz , she spent a year interning at the Oklahoma City Zoo. This furthered her passion for a career in veterinary medicine and eventually went on to graduate from Midwestern University.


Dr. Attarian was born in Rochester, New York, but lived all over the northeast. She spent a majority of her time growing up in Connecticut and the capital region of New York. From a young age, she had been determined to become a veterinarian.

Dr. Caitlin Cunningham grew up in Florida where she was always outside catching frogs and snakes. In high school, she got her first reptile, a bearded dragon named Spaz, who sparked her love for exotic pets. You can even find a picture of Spaz on her stethoscope!