Michael O’Brien

Professor Emeritus, Pathology & Laboratory Medicine

Sharon O’Brien

Clinical Associate Professor, Pediatrics

Paul O’Bryan

Emeritus Professor, Physiology & Biophysics

James O’Connell

Assistant Professor, General Internal Medicine

Paul O’Connell

Instructor, Urology

George O’Connor

Professor, Medicine

Maureen O’Connor

Assistant Professor, Neurology

Christopher O’Donnell

Adjunct Associate Professor, Medicine

Glennon O’Grady

Clinical Associate Professor, Family Medicine

Carl O’Hara

Professor Emeritus, Pathology & Laboratory Medicine

Patrick O’Neal

Assistant Professor, Surgery

Sarah O’Shea

Assistant Professor, Neurology

Robert Oates

Professor, Urology

Doris Obando-Larguet

Instructor, Emergency Medicine

Stephanie Oberhaus

Assistant Professor, Microbiology

Gwynneth Offner

Justin Ogbonna

Instructor, Surgery

Heidi Olander

Instructor, Obstetrics & Gynecology

Nicolette Oleng

Clinical Assistant Professor, Medicine

Gene Olinger

Adjunct Associate Professor, Medicine

Jonathan Olshaker

Professor, Emergency Medicine

Charlene Ong

Assistant Professor, Neurology

Alyssa Orinstein

Assistant Professor, Psychiatry

Jay Orlander

Ralph Orlando

Assistant Professor, Urology

Rafael Ortega

Professor, Anesthesiology

Amanda Ortengren

Instructor, Medicine

Fausto Ortiz

Instructor, Medicine

Lauren Oshry

Bayla Ostrach

Assistant Professor, Family Medicine

Thomas Ostrander

Instructor, Medicine

John Otis

Jaime Oviedo

Clinical Assistant Professor, Gastroenterology

Micaela Owusu

Assistant Professor, Psychiatry

Charles Owyang

Adjunct Clinical Assistant Professor, Pediatrics

David Ozonoff

Professor, Sociomedical Sciences