Welcome to Cochise Animal Hospital

Dr. Thomasson was born in Fairbanks, Alaska, and grew up in Cleveland, OH. He completed his undergraduate studies at the Michigan State University, where he received a BS in Animal Science and then earned his Doctor of Veterinary Medicine (DVM) in 1981. During veterinary school, Dr. Thomasson developed special interests in Internal Medicine, Surgery, Dermatology, and Preventative Medicine.

Dr. Kelsey grew up in Ohio and wanted to be a veterinarian since she was very young. She obtained her Bachelor’s degree in Biology from Mount St. Joseph University in Cincinnati. She moved to sunny Arizona and achieved her lifelong dream by studying at Midwestern University and obtaining her degree in 2020. Dr. Kelsey's professional interests are in geriatric patient care, dermatology, and ophthalmology. Outside of the hospital, she enjoys being outdoors to hike or paddle board, crafting, and spending time with her family.

Dr. Irina Sirota is originally from Ukraine, but has moved around quite a bit prior to settling in Arizona. She obtained a B.S. in Microbiology at California State University, Northridge followed by her doctorate at Midwestern University in 2020. Her professional interests in veterinary medicine include internal medicine, soft tissue surgery, dentistry, and preventative care. Dr. Sirota enjoys traveling, hiking, reading, or simply catching up on her favorite shows.

Dr. Jeri Altizer was born in Austin, TX and grew up in humid southwest Houston. She attended Midwestern University College of Veterinary Medicine, graduating in 2020. Her main interests include soft tissue surgery, preventative medicine, and nutrition. During her first year of veterinary school, she met her future husband in anatomy lab. Fast forward, they now have three dogs, one cat and hope to add some human children of their own in the next few years. In their free time, they enjoy throwing pottery, gardening, swimming, and binge-watching TV shows.

Dr. Jensen grew up just north of New York City before attending Muhlenberg College in Pennsylvania for undergraduate studies and Midwestern University for her doctorate. She did not miss the east coast winters and decided to make Arizona her new home. Dr. Jensen has a strong interest in preventative care, feline medicine and dentistry. She shares her home with two cats, Jelly and Bean and enjoys cooking, baking and going to concerts with her partner Curtis.

Dr. Thomas was born in Las Vegas, Nevada and grew up in Phoenix. She received a B.S. in Microbiology from the University of Arizona and graduated from Washington State University with her doctorate in 2023. After four years in Washington, she decided to return home to the desert warmth. Professionally, Dr. Thomas has an interest in feline medicine, internal medicine, preventive care and dentistry.