We are a team of physicians, physician-assistants, nurses, medical assistants, customer service representatives, and x-ray technicians dedicated to providing the most efficient and cost-effective care of acute/urgent medical conditions.
Our clinic is owned and operated by our staff – all of our decisions are made by those that actually care for the patients. We will do everything in our power to reduce your healthcare cost. We will have a set fee schedule and we will offer significant discount for out-of-pocket or cash paying patients.
We have combined urgent care experiences of over 40 years, and have managed over 200,000 unique patients over the past 10 years. Our experiences directly translate to efficient and timely management of a full spectrum of patients that walk through our doors, while significantly reducing the healthcare cost as well as increasing the accessibility to our quality healthcare. We accomplish this by reducing unnecessary tests, and optimizing the utilization of our 8 exam rooms, eliminating wait time. We are open 365 days a year with extended weekday hours, in-house x-ray and lab.
Our nursing and support staff are skillfully dedicated, with extensive backgrounds in urgent care, and careers devoted to outpatient care.
Urgent care is what we do…this is all we do. When your need is URGENT, we CARE.
Dr. Byung-sun (Bobby) Yun, MD
President/Physician
Dr. Yun attended UW-Madison Medical School. His residency training included surgery, anesthesiology (UCLA), and he is Board Certified in Family Medicine. He has centered his life around practicing medicine in the Fox Valley — spending over 15 years as Medical Director of urgent care clinics in the Fox Valley and Green Bay areas.
His practice philosophy is simple: provide the highest quality healthcare that is both accessible and affordable to hard-working families.
Outside of his medical practice, he enjoys supporting the activities of his three children and family, racquet sports, teaching Taekwondo, and the outdoors.
Olivia Matwiejczyk, PA-C
Provider
Olivia Matwiejczyk is a board-certified Physician Assistant. She earned her Bachelor of Science degree in Biology in 2018 from the University of St. Thomas in St. Paul, Minnesota. Following this she obtained her Master of Science degree in Physician Assistant Studies in 2020 from Ohio Dominican University in Columbus, Ohio. She returned to Northeast Wisconsin where she was born and raised to start her career as a PA. She enjoys the fast-paced nature of the urgent care setting and treating patients of all ages. She is currently a member of the Wisconsin Academy of Physician Assistants.
In her free time, she enjoys spending time with her husband and mini labradoodle, running, reading, and traveling.
Sarah Williams, PA-C
Provider
Sarah Williams is a board-certified Physician Assistant. She earned her Bachelor of Science degree in Human Biology with a minor in Chemistry in 2021 from the University of Wisconsin – Green Bay. Following this, she obtained her Master of Science degree in Physician Assistant Studies in 2025 from Midwestern University in Downers Grove, Illinois. She is currently working on her Master of Public Health degree through the University of Alabama at Birmingham. Sarah enjoys seeing a wide variety of acute illnesses and performing minor procedures.
In her free time, Sarah enjoys spending time with her boyfriend/family/friends/cat, going on walks, traveling, and watching football.
Stephanie Paape, PA-C
Provider
Stephanie Paape is a board-certified Physician Assistant. She received her Master of Science degree in Physician Assistant Studies at PACE University in NYC. Before that, she received a Bachelor of Science degree in Biology from the University of Northern Iowa, where she also competed at the Division 1 level in swimming.
In her free time, Stephanie enjoys spending time with family and friends, reading, cooking/baking, walking her two dogs, and lifting and playing pickleball with her husband.