Our Doctors - Fox Valley Animal Hospital - Crystal Lake, IL

Fox Valley Animal Hospital

6115 Northwest Hwy
Crystal Lake, IL 60014



Our Doctors


Dr. Jeffrey Chemelewski DVM

Dr. Jeffrey Chemelewski DVM


Dr. Chemelewski graduated from the University of Illinois College of Veterinary Medicine in 1978.  His special interests include internal medicine, surgery, and diagnostics.  His personal interests include photography, golf, skiing, and fitness. Their daughter, Kelsey, graduated medical school at Creighton University in 2015.  She is currently a Pediatrician in Arizona.


Star Icon Dr. Chemelewski is working limited part time hours Star Icon

Dr. Christine Sherden DVM with 2 dogs

Dr. Christine Sherden DVM


Dr. Sherden began practicing at Fox Valley Animal Hospital after graduating from the University of Illinois College of Veterinary Medicine in 1990. She is also a Fear Free Certified Professional.

She not only cares for cats and dogs, but enjoys caring for small animals, including rabbits, guinea pigs, and small rodents. 

Dr. Sherden is married to Ken, and has a daughter, Carissa.  The rest of her family includes her 1 dog, and 4 cats. 

As well as spending time with her family, she enjoys walking her dogs, gardening, playing piano, and teaching Awana at her church. 

Dr. Laura McCormick DVM holding a yellow cat

Dr. Laura McCormick DVM


Dr. McCormick grew up in Crystal Lake.  Her family has been coming to Fox Valley Animal Hospital since before she was born.  She is thrilled to be working with her mentor, Dr. Chemelewski, and the amazing doctors and staff at FVAH.  Dr. McCormick graduated from the University of Missouri in 2016 with a degree in Veterinary Medicine.  Her special interests include preventative medicine and oncology.  When she is not snuggling with her cat, Kenny, or playing with the family Golden Retrievers, Gibbs & Annabelle, she enjoys reading and cooking.  We are delighted to have her as one of our doctors!

Dr. Jessica Bertulis DVM with a hawk

Dr. Jessica Bertulis DVM


Dr. Bertulis joined Fox Valley in June of 2021 after graduating from the University of Illinois.  While in vet school, she worked extensively with wildlife rehabilitation and public education and carries over her knowledge of exotic animals into her work with pets of all types.  Dr. Bertulis enjoys caring for dogs and cats as well as pocket pets, birds, and reptiles.  Her free time is spent riding horses, drawing, and playing piano.