About Us

The Department of Internal Medicine is the oldest and largest department in the University of Michigan Medical School. Within our 13 divisions are more than 900 faculty members and over 330 residents and fellows – all dedicated to advancing patient care, education, and research.

University of Michigan Health continues to be #1 in the state and one of the leading adult hospitals in the nation as ranked by U.S. News & World Report for 2023-2024, with seven of our medical-affiliated specialty service lines ranked nationally. U-M Health was also named to the nation’s Honor Roll of hospitals, the only one named in the state.

During fiscal year 2022, the Department of Internal Medicine published more than 3,946 research publications and was responsible for $269.2 million in research expenditures of the record $1.72 billion  reported by the University of Michigan.

Our Mission

  • To enhance and preserve the lives of our patients by offering them the most advanced, comprehensive, and compassionate care.
  • To continually learn how to become better clinicians, researchers, and leaders and offer this knowledge to train healthcare professionals within our organization, our community, and around the globe.
  • To translate research, conducted at the highest scientific standards, into meaningful improvements in health outcomes.
  • To recruit a diverse medical team who believe in and will be dedicated to advancing our mission.
  • To be good stewards of all the resources which have been entrusted to us.


Chair, Department of Internal Medicine

Timothy Blackwell, MD

Timothy Blackwell, MD
Chair, Department of Internal Medicine
John G. Searle Professor of Internal Medicine


Vice Chairs

Julie Bynum, MD, MPH

Julie Bynum, MD, MPH
Faculty Affairs

Kevin Chan, MD

Kevin Chan, MD
Clinical Experience & Quality

U-M Department of Internal Medicine, John Del Valle, MD

John Del Valle, MD
Graduate Medical Education


Scott Flanders, MD
External Relations


U-M Department of Internal Medicine, Cyril Grum, MD

Cyril Grum, MD
Undergraduate Medical Education



J. Michelle Kahlenberg, MD, PhD

J. Michelle Kahlenberg, MD, PhD
Basic & Translational Research

Michael Lukela, MD

Michael Lukela, MD
Diversity, Equity, Inclusion, and Well-Being

U-M Department of Internal Medicine, Rodica Pop-Busui, MD, PhD

Rodica Pop-Busui, MD, PhD
Clinical & Health Services Research

U-M Department of Internal Medicine, Sanjay Saint, MD, MPH

Sanjay Saint, MD, MPH
Veterans Affairs



Associate Vice Chairs

Sarah Gualano, MD

Sarah Gualano, MD
Diversity, Equity, Inclusion, and Well-Being


Megan Mack, MD

Megan Mack, MD
Inpatient & Hospital

Julie Wright-Nunes

Julie Wright-Nunes, MD, MPH
Quality and Innovation


Division Chiefs

U-M Allergy & Clinical Immunology Division, James Baldwin, MD

Allergy and Clinical Immunology Division
James Baldwin, MD

John Bisognano, MD, PhD

Cardiovascular Medicine Division
John Bisognano, MD, PhD (Interim Division Chief)

William Chey, MD

Gastroenterology and Hepatology Division
William Chey, MD

Eve Kerr, MD, MPH

General Medicine Division
Eve Kerr, MD, MPH

Tobias Else, MD

Genetic Medicine Division
Tobias Else, MD (Interim Division Chief)

Lona Mody, MD, MSc

Geriatric and Palliative Medicine Division
Lona Mody, MD, MSc (Interim Division Chief)

N. Lynn Henry, MD, PhD

Hematology and Oncology Division
N. Lynn Henry, MD, PhD (Interim Division Chief)

Stephanie Parks Taylor, MD, MSc

Hospital Medicine Division
Stephanie Parks Taylor, MD, MSc

U-M Infectious Diseases Division, Powel Kazanjian, MD, PhD

Infectious Diseases Division
Powel Kazanjian, MD, PhD

Gregory Clines, MD, PhD

Metabolism, Endocrinology & Diabetes Division
Gregory Clines, MD, PhD (Interim Division Chief)

U-M Nephrology Division, Subramaniam Pennathur, MD

Nephrology Division
Subramaniam Pennathur, MD

MeiLan Han, MD, MS

Pulmonary & Critical Care Medicine Division
MeiLan Han, MD, MS

John Varga, MD

Rheumatology Division
John Varga, MD



  • Chief Administrative Officer, Musty Habhab
  • Director of Administrative Operations, Jolena Nollar
  • Director of Clinical Affairs, Kendra Brown
  • Director of Finance, Eric Mullen