First Year Fellows
Blake Beehler, MD
Medical School: Rush Medical College
Residency: Rush Medical College
Vinaykumar “Sonny” Tallavajhala, MD
Medical School: University of Kansas School of Medicine
Residency: University of South Alabama
Second Year Fellows
Bridget Ollesch, MD (she/her/hers) | 2023-2025
Medical School: Southern Illinois University School of Medicine
Residency: University of Utah
I was born in central Illinois. I received my undergraduate degree in religious studies at Cornell College in Mount Vernon, Iowa. I then completed my medical school at SIU School of Medicine in Springfield, Illinois. I left the midwest to do my residency at the University of Utah in Salt Lake City. I am excited to continue my training in Movement Disorders at the University of Colorado. In my free time, I enjoy hiking and cycling with my husband and my dog.
Ondrea Timmermann, DO (she/her/hers) | 2023-2025
Medical School: West Virginia School of Osteopathic Medicine
Residency: Carle Foundation Hospital
Dr. Timmermann was born and grew up in West Virginia, obtaining her Bachelor’s degree in biology from Alderson Broaddus University and her medical degree from WVSOM. She then moved to Illinois to complete her residency where she realized her interest in movement disorders. To meet her aspiration of becoming a movement disorders expert, she finds her way to Colorado to further her education and training.
In her free time, she enjoys baking, gardening, birding, and hiking.