Emergency Medicine/Anesthesiology Residents 2023-2024

Program Year 2 Resident

McKenzie Warshel, D.O., MSEd

McKenzie Warshel, D.O., M.S.Ed

Medical School: Lake Erie College of Osteopathic Medicine
Undergrad: University of Pittsburgh
Activities/Hobbies: Hanging out with my family, traveling the world, on a mission to find the world's best donut, skiing/snowboarding, finding cool local coffee shops and breweries
Home State: Pennsylvania
Why Johns Hopkins: I was honestly shocked and humbled to have even received an interview at Hopkins. Then I was taken back by how incredible the people on the other side of the screen were. It sealed the deal for me. Everyone I interacted with felt so genuine and had a pure joy about being part of the team. They made me feel like I belonged and they cared about what I had to say. Add that with the abundant opportunities Hopkins has to offer it seemed like a dream program.

McKenzie Warshel is a third-generation female physician. Her grandma was an EM physician back in the 1960s before there was even an EM residency. She grew up in Johnstown, PA with her three younger siblings. She studied neuroscience at Pitt while performing with an aerial dance company and researching the effects of mentoring on teenage pregnancy. Prior to medical school, she worked as a child and teen domestic violence counselor and group counselor for prisoners. She also worked for the Mentoring in Medicine which helps college students get into medical school. McKenzie has a passion for teaching and mentoring students. She earned her master's in medical education during her clinical years and hopes to utilize those skills during her training. She is excited and humbled to be joining the Hopkins family!


Program Year 3 Resident

Jace Bradshaw

Jace Bradshaw, M.D.

Medical School: University of Arkansas for Medical Sciences
Undergrad: Ouachita Baptist University
Activities/Hobbies: Cycling, Running, Weightlifting, Camping, Writing
Home State: Arkansas
Why Johns Hopkins: Johns Hopkins offers world-class academic training delivered by faculty known as leaders and pioneers in their fields. It provides unmatched research and career opportunities. The clear mission of service and desire to care for the city of Baltimore makes it the ideal place to learn and grow clinically and personally.

Jace Bradshaw was born and raised in south Arkansas. He attended Ouachita Baptist University for his undergraduate studies, where he majored in Biology, Chemistry, and Applied Physics. After graduation, he moved to Little Rock, Arkansas, to attend medical school at the University of Arkansas for Medical Sciences. Jace enjoys lots of outdoor activities: cycling, running, camping, and recently got his first certification as a scuba diver.


Program Year 5 Residents

Haydon Lutz

Haydon Lutz, M.D.

Medical School: Royal College of Surgeons in Ireland
Undergrad: McMaster University
Activities/Hobbies: Hockey, soccer, outdoor activities, superhero movies
Home: Ontario, Canada
Why Johns Hopkins: Friendly, welcoming and supportive team environment; program and course modules very well complement my career goals; serving Baltimore’s patient population provides an important learning opportunity in and of itself.

Haydon Lutz began his post-secondary education at McMaster University in Hamilton, Ontario, where he received his (Honours) Bachelor of Health Sciences degree and his Master of Science degree in global health. This foundation in health sciences complemented his medical training at the Royal College of Surgeons in Ireland. After graduating from medical school in 2019, Haydon began his career at Johns Hopkins, where he continues to expand and hone his pursuit of knowledge in medical sciences.


Matthew Sullivan, M.D.

Matthew Sullivan, M.D.

Medical School: Northwestern University
Undergrad: Northwestern University
Activities/Hobbies: Hiking/backpacking, cycling, graphic design, painting, fossil collecting
Home: Texas

Matt Sullivan was born and raised in Houston, Texas. He attended Northwestern University, where he earned his B.A. in Earth and Planetary Sciences with a focus in Paleobiology. While at Northwestern, he competed at the National level as a member of the Sailing Team and developed his skills in graphic design, illustration and painting. After graduation, he enjoyed a year working as a Fossil Preparator at the Field Museum before continuing in his medical studies at Northwestern University Feinberg School of Medicine, where he became drawn to emergency medicine for its humanity and social advocacy. During his first year of training at Stanford University's Emergency Medicine residency program, Matt developed a passion for both and acute and chronic pain medicine, improving the use regional anesthesia in the ED, and interdepartmental collaboration. Matt is thrilled to have found a new home at Johns Hopkins combine EM/Anesthesia program where he will continue to develop these skills and build a new skillset only possible in such an innovative program. Outside of the hospital, Matt continues to be an avid hiker/backpacker, cyclist, graphic designer, painter, and fossil collector.


Program Year 6 Resident

David Anthony Leon

David Anthony Leon, M.D.

Medical School: University of Vermont
Undergrad: University of Virginia
Activities/Hobbies: Hiking/biking/climbing/skiing/stand-up paddleboarding, weightlifting, soccer, cooking, traveling, going to concerts
Home: Virginia (though I like to say Washington, D.C.)

Why Johns Hopkins: The patients and pathology that come to Johns Hopkins, combined with the incredible resources of the medical campus. Baltimore offers a diverse patient population that presents with a wide spectrum of pathology, and Johns Hopkins itself attracts truly unique cases that are seen in very few other medical institutions. Such a rich learning environment is supported by the brilliant minds of Johns Hopkins faculty and housestaff, with a litany of research and career opportunities. On top of all this, I am very fortunate to be part of the pioneer first class of the new emergency medicine-anesthesiology residency, a combination only possible at Johns Hopkins.

David Leon was born and raised in the Washington, D.C., area. He attended University of Virginia, where he majored in biology and did research in circadian rhythms. While there, he was also involved with music and rugby. After graduation, he returned to the D.C. area to complete an M.S. in physiology at Georgetown University. He then worked both as an emergency department scribe as well as a clinical assistant at a private dermatology clinic prior to attending University of Vermont Larner College of Medicine. He hopes to continue to pursue his interests, both academic and extracurricular, while completing his residency at Johns Hopkins.