Dr. Alaina Ziesemer (Dr. Z) graduated from the College of Veterinary Medicine at the University of Illinois Urbana-Champaign in 2007. She decided she wanted to be a veterinarian in fourth grade. While working as a veterinary assistant, she obtained her Bachelors in Science from Benedictine University in 2003.  She has been working at Crest Hill Animal Hospital since October 2007. Her 4-legged fur babies are Mitzy a 13-year-old Domestic Medium Hair (DMH), Tabatha a 12-year-old DMH, and Dipstick a 6-year-old Domestic Long Hair (DLH).

In her free time, she enjoys going to as many Chicago Cubs games as she can and bowling. She is a member of the American Veterinary Medical Association (AVMA), Illinois State Veterinary Medical Association (ISVMA), and American Association of Feline Practitioners (AAFP). Her veterinary medicine interests include feline medicine, internal medicine, oncology, and rehabilitation.