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Department of Medicine

About Us

Dedicated to the future of care

The Department of Medicine provides residents with a thorough, broad-based education while giving patients individualized care through Feinberg-affiliated hospitals and care sites and conducting high-level basic and clinical research through our 12 specialized internal medicine divisions.

The unique culture at the Department of Medicine is built on its rich history of research and clinical innovation embedded in an exceptional clinical environment, driven by faculty and staff whose commitment and talent create patient care improvements through scientific advance.

These extraordinary strengths allow the Department to adapt to tremendous challenges and opportunities that are arising in healthcare. We have seen more change over recent years than in many preceding decades. As each of us contributes to expanding what we can achieve, we are driven by the same core mission: Patients First.”

Susan E. Quaggin, MD, FRCP(C), FASN

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What We Do

Faculty Spotlight

David S Oyer

Clinical Associate Professor of Medicine (Endocrinology)

Concierge medicine practice doing primary care and diabetes for a smaller number of patients.

Kevin J O'Leary

Professor of Medicine (Hospital Medicine)

Kevin is Chief of the Division of Hospital Medicine, Associate Chair for Quality in the Department of Medicine, and Medical Director for Quality for Northwestern Memorial Hospital. He is the founding Director of the Northwestern Medicine Academy for Quality and Safety Improvement (NM AQSI), a professional development program to train leaders in quality improvement. In 2015, AQSI received the Leape Ahead Award from the American Association for Physician Leadership.

Allison J Hahr

Associate Professor of Medicine (Endocrinology)

Dr. Hahr is interested in disorders of endocrinology. She specializes in disorders of calcium and bone, including osteoporosis, hyperparathyroidism and vitamin D deficiency. She also cares for patients with a variety of thyroid disorders, diabetes mellitus, Polycystic Ovary Syndrome, pituitary disease and adrenal disease.

Jayson T Neagle

Assistant Professor of Medicine (Hospital Medicine)

My clinical practice is focused within an inpatient palliative medicine consultation service comprised of a multidisciplinary team of professionals. I'm working with my colleagues to improve the communication skills of our students, residents, and fellows-- especially with regard to goals of care and advance care planning. We strive to be experts in symptom management for those facing serious illness at any stage and provide a holistic team approach to caring for patients and families.

Keith H Benzuly

Associate Professor of Medicine (Cardiology)

Acute myocardial infarction, Angioplasty, Coronary disease, Interventional cardiology, Rotablator, Stents

Valentina Stosor

Professor of Medicine (Infectious Diseases) and Surgery (Organ Transplantation)

Dr. Stosor is engaged in the clinical care of immunocompromised patients, including organ cell transplant recipients and those with HIV/HCV co-infection. My clinical research interests include: 1. HIV and organ transplantation, 2. HIV and HCV co-infection, 3. infectious diseases outcomes after organ transplantation, and 4. infectious diseases outcomes in mechanical circulatory support recipients.

Eric W Schaefer

Assistant Professor of Medicine (General Internal Medicine)

Medical education: graduate & undergraduate

Ronald T Ackermann

Professor of Medicine (General Internal Medicine), Medical Social Sciences (Intervention Science) and Medicine (Endocrinology)

My work focuses on ways to improve health and healthcare through the efficient coordination of health promotion and disease prevention activities across healthcare and community settings. I am considered a national expert in pragmatic research and natural experiments to improve the prevention and control of diabetes and other chronic conditions. My additional interests include advancing health equity, eliminating health disparities, healthcare provider interventions, quality improvement, cost effectiveness analysis, behavioral economics, and strategies for engaging community members and policy...

Clara B Peek

Assistant Professor of Biochemistry and Molecular Genetics and Medicine (Endocrinology)

Epidemiological and genetic studies have shown that disruption of the circadian clock is a factor in multiple pathologies, including metabolic disease, myopathy, and cancer. Our laboratory aims to uncover the physiological impact of the circadian clock on nutrient-responsive regulatory pathways, including oxygen-sensing transcriptional networks. Indeed, we have recently identified a key connection between skeletal muscle clocks and the hypoxia-inducible factor (HIF) pathway, which drives circadian control of the hypoxic response and glucose metabolism. The goal of our laboratory is to understa...