I visited Yongin Asan Internal Medicine with abdominal pain and underwent an upper gastrointestinal endoscopy. The results diagnosed me with reflux esophagitis and gastritis. I always see Dr. Jang Jae-nam in Clinic 1. He listened attentively to my symptoms and calmly and thoroughly explained the necessity of the test, the procedure, and the results. This gave me a sense of trust. He explained areas that could be concerning to patients in a way that was easy to understand and answered my questions with sincerity. The pre- and post-endoscopy instructions were well-organized, and the nurses and staff were all friendly, making my overall experience a satisfactory one. This is the internal medicine clinic I want to trust with for continued health management.