Residency Program Leadership

Program Directors

Tammy Wichman, MD

Professor, UNMC Division of Pulmonary, Critical Care & Sleep Medicine
Program Director, Internal Medicine Residency

Trek Langenhan, MD

Associate Professor, UNMC Division of Hospital Medicine
Associate Program Director, Internal Medicine Residency

Amy Dreessen, MD

Assistant Professor, UNMC Division of General Internal Medicine
Associate Program Director, Internal Medicine Residency

Rae Witt, MD

Assistant Professor, UNMC Division of General Internal Medicine
Associate Program Director, Internal Medicine Residency

Brian Delaney, MD

Assistant Professor, Internal Medicine
Associate Program Director, Omaha VA

Chief Residents

Landon Withrow, MD

UNMC Chief Resident

Gabe Garbin, MD

VA Chief Resident

Jason Barbaretta, MD

Ambulatory Chief Resident

Gigi Green, DO

Scholarship and Patient Safety Chief Resident

Core Faculty

Kaitlyn M. Brittan, MD

Assistant Professor, UNMC Division of Rheumatology

Nora M. Kovar, MD, MPH

Assistant Professor, UNMC Division of Geriatrics, Gerontology and Palliative Medicine

Phone: 402-559-3964
Fax: 402-559-8228

Jasmine R. Marcelin, MD, FACP, FIDSA

Vice Chair of Belonging and Community Engagement, UNMC Department of Internal Medicine
Associate Professor, UNMC Division of Infectious Diseases
Associate Medical Director, Antimicrobial Stewardship Program

Phone: 402-559-8650
Fax: 402-559-5581

Ryan Mullane, DO

Associate Professor, UNMC Division of Nephrology

Phone: 402-559-9227
Fax: 402-559-9504

Erin Ramelb, MD

Assistant Professor, UNMC Division of Hospital Medicine

Cory Rohlfsen, MD

Assistant Professor, UNMC Division of General Internal Medicine

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Alexandra Sorrick, MD

Assistant Professor, UNMC Division of General Internal Medicine

Regan Taylor, MD

Assistant Professor, UNMC Division of General Internal Medicine

Trevor Van Schooneveld, MD

Professor, UNMC Division of Infectious Diseases
Program Director, UNMC Infectious Diseases Fellowship
Associate Medical Director, Infection Control and Epidemiology
Medical Director, Antimicrobial Stewardship Program

Phone: 402-559-8650
Fax: 402-559-5581