Dr. W. James Brown
Dr. Brown joined the Blue Cross Animal Hospital in 1990. Raised nearby, his first profession was as a history teacher at the Nichols School in Buffalo. After completing a Masters Degree at Roswell Park in 1981 he went on to the new challenge of Cornell's Veterinary School, graduating in 1986. A country practice provided experience with "All creatures great and small" until joining Blue Cross. He enjoys practicing medicine in remote locations including the islands of the Caribbean, New Zealand, and Tasmania! His home is made more fun with his 2 Labs Chip and Dooley.
Dr. Jenn ifer Hillegas (formerly Angerosa)
Dr. Hillegas is originally from Scotia, New York, and grew up on the outskirts of the Adirondack mountains. She was inspired to the world of medicine by her father, an otolaryngologist. Her first introduction to veterinary surgery involved the local veterinarian in her area enlisting her father to perform a tonsillectomy on a spider monkey. Dr. Hillegas received her undergraduate degree in Biology from Union College in 1998, then earned her veterinary degree from Cornell University in 2003. She joined Blue Cross Small Animal Hospital in July 2003, and has a special interest in soft tissue surgery. She is an avid musician, and enjoys the symphony and playing the piano whenever she has the opportunity. She enjoys time spent with her husband, their daughter and their Border Collie Mix Cleo and cat Tybalt.
Dr. Amanda Donovan
Dr. Donovan was born and raised in Western New York. She has always wanted to be a veterinarian and began her career in high school as a veterinary assistant at a local animal hospital. She graduated with a Bachelor’s in Biology at Canisius in 2003 and graduated from St George’s University School of Veterinary Medicine in 2007. Dr. Donovan has a special interest in small animal nutrition and exotic animal medicine - including birds, reptiles and small mammals. She loves every part of being a veterinarian and has joined the Blue Cross Animal Hospital to further expand her knowledge and abilities. Dr. Donovan currently lives in Cheektowaga with her rescue dog, Karl, an 8 year old Great Dane/Pitbull mix whose favorite pastime is “pruning” trees.
Dr. Ann Marie Tierney
Dr. Tierney was born and raised in
Buffalo,
New York. While completing her bachelor’s degree in physical anthropology at the University at
Buffalo; she practiced as a licensed veterinary technician locally for 13 years before pursuing her life long dream of becoming a veterinarian. She went on to earn her veterinary degree from
Ross
University.
After many years in practice as a veterinary technician her reasons for joining the Blue Cross Animal Hospital were due to the cohesive family nature of the staff and the academic support of her colleagues. She takes a special interest in emergency and critical care, anesthesia, ophthalmology, and pain management. Her goal in joining the Blue Cross Animal Hospital is to bring current modalities with respect to her areas of interest while enjoying the diverse clientele. Her interests outside of practice include, spending time with her furry friends. Her other interests include golfing, horse back riding, snow boarding, and traveling.

Dr. Susan Jeffrey
Dr. Jeffrey was raised in Ohio where she graduated with a BA
in biology from the College of Wooster in 1996. She earned a Masters of Science
in Animal Science from The Ohio State University in 1998 and graduated from the
University of Wisconsin-Madison School of Veterinary Medicine in 2006. Prior to
moving to WNY in 2009, she worked as a small animal practitioner in Wisconsin.
Although Dr. Jeffrey enjoys all aspects of veterinary
medicine, she has a strong interest in feline medicine. Outside of Blue Cross,
Dr. Jeffrey’s activities include Highland Dance and spending time with her
husband, daughter and three kitties.
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