Our Doctors

Matthew Mottel, Medical Lead

Dr. Mottel joined the team at Avenue Animal Hospital in 2017 after practicing for 3 and 1/2 years at a busy 24-hour animal hospital in the Chicago suburbs. He received his Doctorate of Veterinary Medicine from Ross University School of Veterinary Medicine in 2013. His clinical year rotations were completed at the University of Wisconsin-Madison School of Veterinary Medicine. Go Badgers! Dr. Mottel has special interest in surgery, emergency medicine, neurology, and dentistry. He enjoys working at Avenue for the family atmosphere and great clients. 

He is dedicated to providing quality healthcare for your pets with the highest standards of compassion. Growing up in the western suburbs of Chicago, he is a big fan of the Blackhawks and Bears.

Outside of practice, he plays in a weekly hockey league and during the winter months you can find him spending as much time in the snow as he is an avid alpine skier. Dr. Mottel is married and both him and his wife love spending family time with their Labrador Retriever, Bauer, and two Chihuahuas, Mimi and Peanut.


James P. Wahl, Doctor of Veterinary Medicine

Dr. Wahl became a veterinarian in 1981 upon completing his undergraduate studies and then the veterinary medicine program at Iowa State University. He bought Avenue Animal Hospital in February 1987 and has been practicing here ever since. He holds memberships in the Chicago Veterinary Medical Association, Illinois VMA, American VMA and the American Animal Hospital Association. After some 36 years in practice, he still loves helping and caring for both his animal patients and their owners. He loves the mystery of veterinary medicine; using all the skills that he has learned over the years to help patients. The learning never ends. 

Outside his practice, Dr. Wahl is married with two grown sons, one daughter-in-law and three grandchildren. He has one dog, Bessie; and 4-year-old Princess Grey Kitty, who gives high fives to get petted. Dr. Wahl also enjoys golf, traveling and gardening in his backyard garden.


Kelly Snell, Doctor of Veterinary Medicine

Dr. Snell joined the Avenue family in August 2018. She is a 2017 graduate of the University of Illinois school of Veterinary Medicine. During her time at U of I she had to opportunity to travel to South Africa to volunteer with a vaccine clinic and assist with wildlife in underserved communities. She is an enthusiastic, compassionate veterinarian dedicated to her patients and their humans. Dr. Snell strives to provide the best care possible while ensuring clients understand their pets’ specific health status and needs with thorough and transparent client communication.

She is particularly interested in ophthalmology and dermatology and has a special interest in caring for animals with allergies. She specifically loves her coworkers at the Avenue clinic.

Dr. Snell grew up not too far from Tinley Park with her parents, two sisters and a family of pets, including a dog Mia, cat, Nikki, and numerous exotics, bunnies, hamsters, Guinea pigs and fish. She also has a feline fiend called Colonel Rat Bastard who loves to play and will jump into any box or bag, even if it is full of goods or still in your arms! She also enjoys reading, gardening, watching movies and spending time with her family.


Dr. Gianna Marco, Doctor of Veterinary Medicine

Dr. Gianna Marco, Doctor of Veterinary Medicine

Born and raised in the Chicago suburbs, Dr. Marco completed her undergraduate studies at the University of Illinois Champaign-Urbana. She then moved to Iowa and graduated in 2019 with her DVM from the Iowa State University College of Veterinary Medicine. Dr. Marco returned to Illinois and promptly joined a high-volume veterinary hospital in the South Chicago Suburbs where she practiced for 2 years. Dr. Marco is very excited to join the Avenue Animal Hospital Family. Her interests include dentistry, radiography and ultrasound, parasitology, small companion exotic medicine, and surgery. She is also pursuing her certification in Veterinary Acupuncture.

Dr. Marco is Fear Free Certified. She is compassionate and loves working with her clients and their fur-babies as a team. She believes in individualized care and making exams and treatments as stress free as possible.

In her free time, Dr. Marco loves to spend time with her husband, son, two dogs and six axolotls. She enjoys painting, crochet, cross-stitch and embroidery, and gardening. Dr. Marco loves to cook and bake for her family and is constantly finding and trying new recipes. She enjoys exploring the outdoors with her son and husband.


Dr. Sarah Quinlan, Doctor of Veterinary Medicine

Dr. Sarah Quinlan, Doctor of Veterinary Medicine

Received Doctor of Veterinary Medicine from St. George’s University in 2022. Clinical rotations were completed at the University of Illinois Urbana-Champaign. Special interest in animal behavior. Fear-free certified and committed to continuing education regarding the latest advancements in animal behavior. I enjoy meeting new people every day, and helping them and their pets live their healthiest, happiest lives together. I’m grateful for the opportunity to work with such great staff members who go above and beyond for their patients.

Before vet school I was a nursing assistant, and a vet tech for several years before deciding to pursue my Doctor of Veterinary Medicine. During my time in vet school, I had the opportunity to volunteer doing sea turtle conservation work in Grenada, specifically with Leatherback turtles!

I was born and raised in the Southwest Chicago suburbs, wanting to be a pediatrician! I always wanted to help the helpless, and I’m very grateful I got to combine that passion with my love for animals as a veterinarian. I currently live near Tinley Park with my husband, stepdaughter, 2 chihuahuas, 2 ferrets and a leopard gecko. I enjoy all things outdoors in my free time such as hiking, camping, and swimming.