About us

Welcome to Gateway Medical Center

Gateway Medical Center was founded in 2001 by Dr. Sisom Osia. At Gateway Medical Center, we are dedicated to providing the highest quality medical care to Prince George’s County and its surrounding areas in DC, Maryland, and Virginia. Our mission, when our doors first opened over 15 years ago, was to cater to the needs of our patients and meticulously caring for them, while being compassionate and understanding. This remains our fundamental philosophy in our office today.

Dr. Osia draws from his extensive medical knowledge accumulated over 38 years, to care for the whole patient. In the office, we treat acute and chronic illnesses, conduct screenings, and emphasize preventing disease. Since illness can befall on an individual without any prior signs, we believe in being available to our patients in a timely manner. We welcome patients with and without scheduled appointments. However, we are also expanding our available resources to be able to meet your needs and answer questions outside of a 9-5 time frame.

We believe in keeping pace with technology. Our office is fully equipped with electronic medical records, digital X-ray capabilities, the latest heart ultrasound machine, an advanced nuclear stress test scanner, endoscopy equipment, and an on-site laboratory. Our internet website enables patients to access our office anytime, and bridges them with the patient portal where they are available to view records.

Our patients are our passion. Our staff is friendly, responsible, and sensitive to patient needs. Every effort is made to maintain the highest standards of patient privacy. We strive to deliver the most advanced medical services of today in an office with small-town familiarity. New patients are always welcome.