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Photo of Costello, Jillian

Jillian Costello, DO

Resident (Class of 2025)

Combined Internal Medicine-Pediatrics Residency

« Med-Peds Residency


I’m from Virginia Beach, and stayed in Virginia for school until coming to the Midwest for residency. In my free time I love to travel and try new restaurants. My hobbies include hanging out with friends, cooking, and catching up on Netflix shows. I’m still not sure what my future in Med-Peds will look like, but I’m currently leaning towards being a Med-Peds hospitalist.

Why I Chose Peoria

During the application process, I was looking for a program that was well-established with a strong Med-Peds presence. I was impressed with the strength of both the Internal Medicine and Pediatrics programs, and the approachability of the residents and faculty. Peoria has been a great place to live, with everything you need complete with a small-city kind-of-feel. I could not be happier that I matched here!


Liberty University College of Osteopathic Medicine

University of Virginia; Biology BA, Psychology BA