Meet Our Team

Duvuru Geetha, MD

Professor of Clinical Medicine

Dr. Geetha is a Professor of Medicine in the Division of Nephrology. A graduate of Madras Medical College, India, she completed Internal Medicine training in U.K. She did her Internal Medicine Residency at York, PA and Nephrology fellowship at Johns Hopkins Bayview Medical Center. She has been on Hopkins faculty since 1998. She is a member of Royal College of Physicians (U.K.), American Society of Nephrology, American Society of Transplantation and a consultant for the vasculitis foundation. She is a member of the Miller Coulson Academy of Clinical Excellence at Hopkins. Her clinical interests include renal disease in vasculitis patients with a focus on ANCA associated vasculitis and Henoch-Schonlein Purpura. She does clinical and translational research in vasculitis with a focus on ANCA associated vasculitis and renal disease.

Brendan Antiochos, MD

Assistant Professor of Medicine

Dr. Antiochos is a graduate of Dartmouth College and Dartmouth Medical School. He completed internal medicine residency at Oregon Health & Science University, then rheumatology fellowship at Johns Hopkins, before joining the faculty here in 2014. Dr. Antiochos assumed the role of Director for the vasculitis center in 2022. In addition to seeing patients in the vasculitis center, Dr. Antiochos performs laboratory-based research on autoimmune diseases. His laboratory work focuses on activation of the innate immune system and the discovery of novel autoantibodies.

Philip Seo, MD

Associate Professor of Medicine

A graduate of Harvard College and the College of Physicians and Surgeons at Columbia University, Dr. Seo completed his Internal Medicine training as a member of the Osler Medical Service at the Johns Hopkins Hospital. Since then, he has worked at Johns Hopkins in several capacities, including as a hospitalist at Johns Hopkins Bayview Medical Center, and as an Assistant Chief of Service of the Department of Medicine at the Johns Hopkins Hospital, before joining the Division of Rheumatology. His research interests are the assessment and treatment of ANCA-associated vasculitides, including Churg Strauss Syndrome, Wegener’s Granulomatosis, and Microscopic Polyangiitis.

David B. Hellmann, MD

Aliki Perroti Professor of Medicine

Dr. Hellmann is the Chairman of the Department of Medicine and Vice Dean at The Johns Hopkins Bayview Medical Center, and the Aliki Perroti Professor of Medicine. A graduate of Yale University and Johns Hopkins Medical School, Dr. Hellmann received his Internal Medicine training on the Osler Service at Hopkins, and trained in Rheumatology at the University of California, San Francisco. He has been on the Johns Hopkins faculty since 1986.

Desh Nepal, MD

Assistant Professor of Medicine

Michael Cammarata, MD

Assistant Professor of Medicine

Dr. Cammarata is a graduate of The College of William & Mary. He attended Eastern Virginia Medical School and completed his residency in Internal Medicine at the University of California San Francisco. He returned to the east coast for rheumatology fellowship at Johns Hopkins, joining faculty in 2024. He is RhMSUS certified in musculoskeletal ultrasound, and also practices general medicine as a hospitalist at Johns Hopkins Hospital.