Charles Lieu, MD, is a board-certified internal medicine physician who sees patients 18 years and older. He provides preventative care, including annual wellness exams, school and sports physicals, vaccinations and pre-employment physicals. Dr. Lieu treats a wide range of conditions, including cold and flu symptoms, minor illnesses and injuries and manages acute and chronic conditions like asthma, allergies, COPD, anxiety and depression, diabetes, heart disease, high blood pressure, high cholesterol, obesity, osteoporosis, thyroid disease, tobacco use and urinary tract infections. He also helps patients with advanced directives and planning for end-of-life care. This practice is a part of BJC Medical Group of Missouri.