Christopher Chappell, DO

John T. Ellena, MD, is a board-certified internist who sees patients 18 years and older. He provides complex medical management across the spectrum of internal medicine and preventive care. He is dedicated to improving patient health and stays at the forefront of medical innovation. His approach combines advanced techniques with personalized treatment plans, ensuring the highest level of care for patients. Dr. Ellena values building personal relationships with his patients. As a member of BJC Concierge Care, he offers customized wellness plans and ensures seamless communication with specialists and hospitals for coordinated care. He provides both inpatient and outpatient care. This practice is a part of BJC Medical Group of Missouri.

Caitlynn Listello, FNP, is a board-certified family medicine nurse practitioner who sees patients of all ages, including newborns, teens and adults. She provides preventative care, such as annual wellness exams, well-woman visits, vaccinations and manages acute and chronic illnesses. She treats a wide range of conditions, including asthma, cold and flu, diabetes, high blood pressure, obesity, chronic obstructive pulmonary disease (COPD), depression and mental health concerns. This practice is part of BJC Medical Group of Missouri.