College of Medicine
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University of Nebraska Medical Center
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Residency Program Leadership

Program Directors

Tammy Wichman, MD

Program Director
Associate Professor, Pulmonary, Critical Care & Sleep Medicine

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Tammy Wichman, M.D.
Trek Langenhan, MD

Associate Program Director
Assistant Professor, Hospital Medicine

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Trek Langenhan, MD
Jasmine Marcelin, MD

Associate Program Director
Assistant Professor, Infectious Diseases

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Jasmine Marcelin, MD
Chad Vokoun, MD

Associate Program Director
Division Chief, Hospital Medicine
Associate Professor, Hospital Medicine

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Chad Vokoun, MD
Rae Witt, MD

Associate Program Director
Assistant Professor, General Internal Medicine

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Rae Witt, MD
Brian Delaney, MD

Associate Program Director, Omaha VA
Assistant Professor, Internal Medicine

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Brian Delaney, MD

Chief Residents

Amy Dreessen, MD

Chief Resident

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Amy Dreessen, MD
Evan Symons, DO

VA Chief Resident

Evan Symons, DO
Clayton Oakley, DO

Ambulatory Chief Resident

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Clayton Oakley, DO
Jonathan Hall, MD

Quality and Patient Safety Chief Resident

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Jonathan Hall, MD

Program Administration

Stephanie Wichman

Residency Program Coordinator

Stephanie Hooten

Education Program Administrator

Stephanie Hooten