Dr. Ratzlaff grew up in Hillsboro, KS. He completed his BS in Medical Molecular Biology at Oral Roberts University in 2018 and Doctor of Osteopathic Medicine at Arkansas College of Osteopathic Medicine in 2022. He completed his Internal Medicine Residency at UAMS Northwest in 2025, where he was Chief Resident from 2024-2025. His areas of clinical interest include emerging pathogens, antimicrobial-resistant organisms, and infections in immunocompromised hosts, including invasive fungal infections.
Outside of medicine, Dr. Ratzalff enjoys staying active, including long walks in Forest Park with his bernedoodle, Chip, who tends to take the lead. He also likes trying new restaurants with his wife, finding the St. Louis food scene a very pleasant surprise.
Why did you choose WashU for your ID fellowship?
“I chose WashU for fellowship training because of its high clinical volume and complex patient population, which draws referrals from multiple surrounding states. I was also drawn to the strength of the program and department leadership, as well as the opportunity to learn from faculty who are leaders in their fields.”