Margarita Gianniosis, MD

My Inspiration

As small business owners, my parents showed me what it means to serve a community and build lasting relationships. I wanted to follow that same path of service in a way that was most meaningful to me—through medicine.

What I’m Passionate About

I have a strong clinical interest in lung cancer care. As an advanced bronchoscopist, I perform minimally invasive, robotic-assisted procedures that help diagnose cancer earlier and with greater accuracy. From raising awareness about screening to working closely with oncology and thoracic surgery colleagues, my goal is to improve early detection rates and outcomes for patients here in Delaware.

Off the Clock

Cooking is one of my favorite pastimes, rooted in my family’s background in restaurants. I’m also learning to play tennis with my husband—who’s a former collegiate player—and I enjoy spending quality time with loved ones.

My Commitment to You

When I meet a patient, I see more than a diagnosis—I see a person with unique concerns and goals. I’m committed to listening, building trust and providing compassionate, evidence-based care. Whether guiding patients through serious illness or celebrating milestones of recovery, my priority is ensuring every patient feels heard, supported and empowered.