Antoine Mansourati, MD

Dr. Mansourati is a board-certified internal medicine physician widely recognized for his compassionate, evidence-based, and patient-centered approach to care. He is deeply committed to building strong, lasting relationships with his patients—empowering them with knowledge and support to live healthier, more fulfilling lives. With a unique blend of clinical expertise, research experience, and holistic care philosophy, Dr. Mansourati delivers care that is both comprehensive and deeply personalized.

He earned his medical degree from the University of Kalamoon and went on to join Duke University as a Postdoctoral Researcher, where he studied cell biology and the cancer microenvironment. His passion for advancing medical science continued at the University of Southern California, where he contributed to research on innovative cancer therapeutics.

Dr. Mansourati completed his internal medicine residency at MedStar Health in Baltimore, gaining broad experience in managing complex medical conditions and delivering high-acuity urgent care. During this time, he also collaborated with Johns Hopkins University on cutting-edge research projects.

His dedication to advancing clinical care and research led to his selection for the competitive Hematology and Oncology fellowship at St. Joseph's University Medical Center. While he continues to train in this specialized field, Dr. Mansourati remains deeply connected to his roots in internal medicine and is proud to bring his diverse expertise to the patients of Greenwich Primary Clinic.

Outside of his medical career, Dr. Mansourati leads an active lifestyle and enjoys mountain biking, hiking, CrossFit, and playing basketball.