Dr. Bernard Long, our Co-Chief of Staff, began working at Hillcrest Animal Hospital in 1986. He completed undergraduate studies at St. John's University in Minnesota, and later studied veterinary medicine at the University of Illinois College of Veterinay Medicine. Dr. Long enjoys all aspects of veterinary medicine, including general surgery, diagnostics and ophthalmology.

In his free time, Dr. Long enjoys spending quality time with his family and being outdoors.

Dr. Alexandria Mercer, our Co-Chief of Staff, has been a veterinarian at Hillcrest Animal Hospital since 1995. She completed undergraduate studies at the University of Maryland, and veterinary studies at the University of Florida College of Veterinary Medicine. Professionally, she is most interested in internal medicine, particularly in the areas of endocrinology, cardiology and nephrology.

Outside of work, Dr. Mercer enjoys spending time with her husband and three children. Her hobbies include enjoying country living with her horses, goats, dogs, chickens and bees!

Mary Wilder, DVM with DogDr. Mary Wilder developed an interest in veterinary medicine while growing up on a farm in DeKalb, Illinois. She completed her pre-veterinary education at Kishwaukee College and Northern Illinois University. Dr. Wilder graduated from the University of Illinois College of Veterinary Medicine in 1988, and has worked as a veterinarian at Hillcrest Animal Hospital since 1995. Her professional interests include internal medicine, surgery and ultrasonography.

In her free time, Dr. Wilder assists the Hoo Haven Wildlife Rehabilitation facility. She also enjoys spending time with her husband, Randy, and her children, Mike and Amy. Her hobbies include crafts,especially wood-carving, reading and spending time outdoors.

Dr. Hall grew up in Decatur, MI. She received her undergraduate degree from Alma College in Alma, MI, and her veterinary degree from Michigan State University. Her special interests include dentistry and surgery.

Outside of work, Dr. Hall enjoys gardening, planted aquariums, and hiking. She has a yellow Labrador named Garro, three cats named Suki, Butterball and Velcro, an aquarium with goldfish, and a large planted tropical community tank.

dr trevor berg dvm Dr. Trevor Berg grew up in Harvard, Illinois. He received an undergraduate degree from the University of Illinois - Chicago and earned his DVM degree from the University of Illinois - Champaign. Prior to joining the Hillcrest Animal Hospital team, Dr. Berg practiced in Wisconsin and at numerous clinics around Rockford. His special interests include surgery and general medicine.

Dr. Susan Reis grew up in Denison, Iowa and currently resides in Madison, Wisconsin. She received her undergraduate and DVM degrees from Iowa State University. She has a special interest in small animal reproduction.

Outside of work, Dr. Reis enjoys dog showing/training, motorcycles, photography, golf, and music (including piano and guitar.) She has two dogs, Buzzy and Lady, and a cat named Tiki.