Please note: We will be closed on Wednesday, October 12th from 12-2 PM.
We will also be closing at noon on Friday, October 21.
Our Amazing Team

Our Veterinarians

We look forward to seeing you soon! Get to know the amazing veterinarian team at Hillside Animal Hospital and why we love what we do so much.

hillside animal hospital veterinarian group photo

Meet Our Veterinarians

aaha logo
fear free certified elite
lsh logo

Dr. Anna Migneco

Veterinarian

Dr. Anna grew up in St Louis, watching her veterinarian father perform surgeries from a very young age. Naturally, after obtaining a degree in Biology from Saint Louis University, she went to veterinary school and graduated in 2014 from the University of Missouri. After graduation, Dr. Anna moved to Kansas City to practice veterinary medicine for a few years before coming home in the spring of 2017 to work with her Hillside family again. Dr. Anna now lives in St Louis with her spouse, Aaron, and their 5 animals. Dr. Anna and Dr. Aaron are now the proud owners of Hillside Animal Hospital and are looking forward to continuing Hillside’s reputation for excellence and compassion. In her free time, she enjoys traveling and hiking with her dogs.

aaha logo
fear free certified level 2

Dr. Aaron Willis

Veterinarian

Dr. Aaron grew up in Grain Valley, Missouri. He studied Animal Science as an undergraduate at the University of Missouri while also playing sousaphone for Marching Mizzou. After 3 years of undergraduate coursework, he was accepted into MU’s College of Veterinary Medicine. Dr. Aaron completed his DVM degree in May of 2014. He practiced for 3 years in the Kansas City area before moving to St. Louis in 2017. Dr. Aaron has a keen interest in soft tissue and orthopedic surgery, as well as ophthalmology and dentistry. Dr. Aaron resides in St. Louis with his wife, Anna. Together they have 5 furbabies: 3 cats, Neko, Piper, Peter, and 2 dogs, Archer Potato and Oliver Pesto. In 2020 (along with his wife Anna), Dr. Aaron purchased Hillside Animal Hospital. In their spare time, they enjoy traveling, hiking, drinking coffee, playing musical instruments, and spending time with family.

aaha logo
fear free certified level 2
lsh logo

Dr. Betsy Marziani

Veterinarian

Hi, thanks for choosing to read up a little bit about Dr. Betsy. Her real name is Elizabeth, but no one has ever called her that (even her parents). She has lived in St. Louis most of her life and attended Bradley University for her undergraduate degree in biology and Mizzou for veterinary school (MIZ-ZOU)). While a student at Mizzou, a friend recommended her to do a preceptorship at Hillside. After a short stint away, she returned to Hillside and has been a veterinarian here since 2008. Her greatest pleasure at work (besides her patients and clients) are her awesome coworkers and the ability to have fun even when it gets stressful. In addition to working at Hillside, she has been president of the local veterinary association and served on their executive board for over 8 years. She is also involved in our state veterinary association, the MVMA. When not playing with fur balls at work, she is wrangling her son and daughter, is a lover of all things outdoors (fish – not so much) and is a photography enthusiast. Traveling the world (while taking pictures of course) feeds her soul. Back at home, the largest contributor of animal hair to her household is her cat Handsome Rob and in second place is their dog, Rory. Rory enjoys going to rally and agility class while the cat can’t be bothered to answer this question.

aaha logo
fear free level 3 icon
lsh logo

Dr. Brittney Haffner

Veterinarian

Dr. Brittney grew up in St. Louis and earned both her undergraduate and veterinary degrees at Mizzou. She graduated veterinary school in 2020 and has been working at Hillside since. She has loved getting to know the clients and patients at Hillside and considers it an honor to be a small part of keeping them happy and healthy. She enjoys all aspects of being a veterinarian but especially enjoys preventative medicine and clinical pathology. Dr. Brittney’s immediate family consists of her fiancé, CJ, their two dogs, Myla and Sabrina, and their cat, Nemo. In her free time, Dr. Brittney enjoys exploring the outdoors (mostly in the summertime – she dislikes the cold!), trying new restaurants, reading any and all mystery and romance novels, and usually has a coffee in her hand while doing all the above.