Beaumont HospitalProfessional Education

Current Residents

Ahn_Allan Allen Ahn
University of Illinois

Dr. Ahn grew up in Naperville, Illinois. He attended University of Illinois at Urbana-Champaign for his undergraduate degree and University of Illinois at Chicago for his professional degree. He earned his Doctor of Pharmacy degree in 2015 and he worked as a Staff Clinical Pharmacist for three years here at Beaumont-Royal Oak before starting the non-traditional PGY1 residency program. His professional interests are practice management and pharmacoinformatics. Outside of work, Allen enjoys playing video games, biking, and spending time with family and friends.


Courville_Deanna Deanna Courville
Ferris State University

Dr. Courville grew up in Essexville, Michigan. She earned her Doctor of Pharmacy degree in 2010 from Ferris State University and has worked as a Staff Clinical Pharmacist on the midnight shift at Beaumont-Royal Oak since 2017. Prior to Beaumont, she worked at MidMichigan Medical Center in Midland, Michigan.  Dr. Courville’s professional interests include infectious diseases and pain management.  Outside of pharmacy, Deanna enjoys reading, visiting Boston, and spending time with her family and friends, including her two dogs and cat.


Karissa Fritsch
University of Wisconsin-MadisonFritsch_Karissa

Dr. Fritsch is from Baraboo, WI and earned both her Bachelor of Science in Pharmaceutical Sciences and her Doctor of Pharmacy Degree from the University of Wisconsin-Madison. Her professional interests include critical care, emergency medicine, and precepting pharmacy students. Outside of pharmacy, Karissa enjoys traveling, exploring new restaurants and breweries, and spending time with family.


Sarah Khan
Nova Southeastern UniversityKhan_Sarah

Dr. Khan is from Fort Lauderdale, Florida. She attended Broward College for her undergraduate degree and completed her professional education at Nova Southeastern University, earning her Doctorate of Pharmacy in May 2019. Her clinical interests include critical care, psychiatry, and emergency medicine. In her free time, Sarah enjoys exploring new restaurants, soaking up some sun at the beach, and spending quality time with family and friends. 


Abbey Kirwen
University of ToledoKirwen_Abagail

Dr. Kirwen is from Toledo, Ohio. She earned both her bachelor’s degree and Doctor of Pharmacy degree from The University of Toledo. Her professional interests include critical care, emergency medicine, and precepting pharmacy students. Outside of pharmacy, Abbey enjoys running, cooking, and spending time with her family, friends, and kitties! 


Kristen Koehl
Butler UniversityKoehl_Kristen

Dr. Koehl is from Indianapolis, IN. She earned her Doctor of Pharmacy degree from Butler University in 2019. Her professional interests include emergency medicine, internal medicine, and psychiatric medicine. Outside of pharmacy, Kristen enjoys working out, movies, watching Netflix, traveling, spending time with friends, and experiencing new restaurants.


Melissa Kohl
University of MichiganKohl_Melissa

Dr. Kohl grew up in Ranchos Palos Verdes, California. She earned her Bachelor of Arts in Cellular and Molecular Biology at Connecticut College and Doctor of Pharmacy at the University of Michigan. Her professional interests include Critical Care, Emergency Medicine, and Cardiology. Outside of pharmacy, Melissa enjoys playing volleyball, trying new restaurants, traveling, and reading the latest murder mystery novel. 


Gillian Leung
University of MichiganLeung_Gillian

Dr. Leung is from Shelby Township, Michigan. Born at Royal Oak and raised in Hong Kong, she is happy to return to Beaumont. She earned her Bachelors of Science degree in Biological Sciences from Wayne State University and her Doctor of Pharmacy degree from the University of Michigan University. Her clinical interests include cardiology and academia. Making new connections and reuniting with old friends at professional conferences are some of her favorite activities. When not practicing pharmacy, you can find her running, doing yoga, completing word search puzzles, and traveling with family and friends.


Jordan Potter
University of KentuckyPotter_Jordan

Dr. Potter attended the University of Kentucky for his undergraduate education and completed his PharmD curriculum at the University of Kentucky College of Pharmacy in 2019. While there, Jordan founded, Mindfulness in Newly Developing Students (MINDS) of Healthcare, an interprofessional student organization dedicated to integrating mindfulness practices into the daily routines of healthcare providers to reduce burnout and improve patient care. Outside of pharmacy, Jordan enjoys yoga and paddle boarding, conducting independent research, and trying new craft beers. 


Drew Torey
University of MichiganTorey_Andrew

Dr. Torey grew up in Sterling Heights, Michigan. He earned his Bachelor of Science in Biochemistry from Adrian College and Doctor of Pharmacy from the University of Michigan. His professional interests include internal medicine, anticoagulation, emergency medicine, and pediatrics. Outside of pharmacy, Drew enjoys playing basketball, spending time with family and friends, and football Saturdays in Ann Arbor.


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