Greater Buffalo Veterinary Emergency Clinic
Cheektowaga, NY
Our Vets

• Doctor of Veterinary Medicine, University of Prince Edward Island, Charlottetown, Canada

Dr. Kristina Doyle’s professional interests include surgery and emergency medicine. She is passionate about client communication, preventative health and team building.

• Doctor of Veterinary Medicine, University of Guelph, Ontario, Canada
• Master of Science, Public Policy, Tufts University, North Grafton, MA
• Bachelor of Science, Ecology and Evolution, University of Rochester, NY

Dr. Doyle enjoys hiking with her dog, kayaking, traveling, cooking and reading.

Dr. Kim Leys finds emergency and exotic animal medicine particularly exciting.

• Clinical Rotation, University of Missouri, Columbia
• Doctor of Veterinary Medicine, Ross University, St. Kitts & Nevis, West Indies
• Bachelor of Science, Marine Biology, Long Island University, Southampton, NY

Dr. Leys’ interests include national ski patrol, 4H, homestead farming and sheep herding.

After a few years in general practice, Dr. Jacqueline Miller decided to return to her passion for emergency veterinary medicine. Her professional interests include anesthesiology, neurology and pocket pet medicine.

• Doctor of Veterinary Medicine, Cornell University, Ithaca, NY
• Bachelor of Science, Biology, University of North Texas, Denton

In her free time, Dr. Miller enjoys nature walks, bouldering, reading and astronomy.

Dr. Kathleen Muckenhirn has multiple professional interests, including behavioral, emergency and exotic animal medicine as well as soft tissue surgery.

• Doctor of Veterinary Medicine, University of Prince Edward Island, Charlottetown, Canada
• Bachelor of Science, Animal Science, University of Connecticut, Mansfield

Dr. Muckenhirn enjoys hiking and training new skills with her dog Tonks; they’re working on parkour, scent and obedience with hopes to start agility and draft skills soon. She also enjoys watching action movies at home with her three cats or at the drive-in theater.

Dr. Allison O’Toole has worked in shelter medicine, emergency medicine and general practice.

• Clinical Rotation, University of Tennessee, Knoxville
• Doctor of Veterinary Medicine, St. George’s University, Grenada, West Indies
• Bachelor of Science, Veterinary Technology, Biology, Medaille College, Buffalo, NY

In her spare time, Dr. O’Toole enjoys spending time with her nephews, reading, going to concerts and traveling.

Dr. Sarah Poltis’ professional interests include emergency medicine, exotics and business management.

• Doctor of Veterinary Medicine, University of Tennessee, Knoxville

During her time off, Dr. Poltis enjoys spending time camping, playing board games and photography. She has a dog named Dottie and two more that are shared with her family (Pickles and Jackson).

• Residency, Avian & Exotic Medicine, Specialized Care for Avian & Exotic Pets, Clarence, NY
• Internship, Small Animal Medicine & Surgery, New England Animal Medical Center, West Bridgewater, MA
• Doctor of Veterinary Medicine, University of Pennsylvania, Philadelphia
• Bachelor of Science, Biochemistry, Bowdoin College, Brunswick, ME

Dr. Ann-Marie Tierney finds great satisfaction in working in an emergency setting. Her professional interests include ophthalmology, anesthesia and pain management. She enjoys teaching and sharing medical knowledge with colleagues and clients alike.

• Clinical Rotation, Oklahoma State University, Stillwater
• Doctor of Veterinary Medicine, Ross University, St. Kitts & Nevis, West Indies
• Bachelor of Science, Physical Anthropology, University at Buffalo, NY

Dr. Tierney enjoys hiking with her wife and dogs – Grayson and Enzo. She is passionate about traveling to new places, seeing new animals, gardening all kinds (flowering plants, vegetables and herbs) and anything outdoors like snow shoeing, skiing, canoeing and white-water rafting.