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Infectious Diseases

Meet Our Medical College of Wisconsin Infectious Diseases Fellows

Second Year Fellows

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Arshan Chaudhri, MD, MS

Division of Infectious Diseases Fellow, Class of 2027

Hometown: Chicago, IL | Undergraduate: Benedictine University | Medical School: Chicago Medical School | Residency: MercyHealth Consortium - Rockford

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Gregory Ventrelli, MD

Division of Infectious Diseases Fellow, Class of 2027

Hometown: West Suffield, CT | Undergraduate: Ithaca College | Medical School: University of Connecticut | Residency: University of Alabama at Birmingham

First Year Fellows

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William Collier, MD

Division of Infectious Diseases Fellow, Class of 2028

Undergraduate: Marquette University| Medical School: Medical College of Wisconsin | Residency: Medical College of Wisconsin

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Hiwot Gobezie, MD

Division of Infectious Diseases Fellow, Class of 2028

Hometown: Oshkosh, WI | Undergraduate/Medical School: Bahir Dar University School of Medicine and Health Sciences, Ethiopia | Residency: Howard University, Washington, DC

Med-Peds

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Zachary Telfer, MD

Adult and Pediatric Infectious Diseases Fellow, 2023-2027

Hometown: Fort Atkinson, WI | Undergraduate: University of Wisconsin-Oshkosh, Oshkosh, WI | Medical School: Medical College of Wisconsin, Milwaukee, WI | Residency: Medical College of Wisconsin, Milwaukee, WI

Other Past Graduates

The Infectious Disease Fellowship Program at the Medical College of Wisconsin was started in July 1969. Over the years, our program has grown and we have trained 91 Infectious Diseases physicians as of June 2026. At the end of two years of training, fellows from our program have been able to go out into any setting to continue their work as ID specialists. The following is a listing of where our most recent fellows have gone after graduation.
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2026

Shivum Patel, MD
Assistant Professor of Medicine, Division of Infectious Diseases, Department of Medicine, MCW

Christopher Wagner, MD, MPH
Assistant Professor of Medicine, Division of Infectious Diseases, Department of Medicine, MCW

2025

Nicole McAlvany, DO
Infectious Disease Consultants, LTD, Chicago, IL

Patrick Mulligan, DO
Private Practice, Northwest Suburban Medical Associates, Arlington Heights, IL

2024

Trevor Birkey, MD
Assistant Professor of Medicine, Division of Infectious Diseases, Department of Medicine, MCW

Laila Mossa-Basha, DO
Private Practice, ID Physicians of Wisconsin

2023

Erin Guenther, DO
Private Practice, Advocate Aurora Health, Oshkosh, WI

2022

Jack Keegan, MD
Assistant Professor of Medicine, Division of Infectious Diseases, Department of Medicine, MCW

Zach Ciochetto, MD
Clinical Assistant Professor of Medicine, Division of Infectious Diseases, Michigan State University

2021

Patrick Kennedy, DO
Assistant Professor of Medicine, Division of Infectious Diseases and Critical Care Medicine, Department of Medicine, MCW

Kenneth Swanson, DO
Private Practice, Advocate Aurora Health, Milwaukee and SE Wisconsin

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