Hematology & Medical Oncology Fellows & Alumni
We hope to have you join the ranks of exceptional individuals who have graduated from our program.
Meet the fellows
PGY-4
Sean O'Neil, MD
BS: University of Wisconsin-La Crosse (Biology& Spanish)
MD: Medical College of Wisconsin
Residency: Gundersen Health System
Christopher D Walden, MD, PhD
BS: University of North Dakota (Biology)
PhD: University of North Dakota (Biochemistry &Molecular Biology)
MD: University of North Dakota School of Medicine and Health Sciences
Residency: Gundersen Health System
PGY-5
Jordyn Kreutzfeldt, MD
BA: University of South Dakota (Medical Biology)
MD: University of South Dakota, Sanford School of Medicine
Residency: University of AZ, Tucson
Garrett Weber, MD
BS: University of Nebraska, Lincoln (Biological Sciences)
MD: University of South Dakota, Sanford School of Medicine
Residency: Gundersen Health System
PGY-6
Michael Lehner, MD
BA: Purdue University (Biomedical Engineering)
MD: McGovern Medical School at the University of Texas Health Science Center
Residency: McGovern Medical School at the University of Texas Health Science Center
Aquino Williams, MD
BA: SUNY Farmingdale
MD: St. Georges University
Residency: Hackensack University Medical Center
Graduates
2024 alumni
Yacki Hayashi-Tanner, DO
Hematologist/Medical Oncologist
Gundersen Health System, La Crosse, WI
Emily Westergard, DO
Community Oncology Practice
Lakewood Health System, Staples, MN
2023 alumni
Shivani Kapur, MD
Assistant Professor, Multiple Myeloma
University of Pennsylvania Medical Center, Philadelphia, Penn.
Matthew McGee, MD
Clinical Practice
Sanford Health, Bismarck, N.D.
2022 alumni
Vidya Kollu, MD
Clinical Practice
Genesis Health System, Davenport, Iowa
Reggie Thomes, DO
Hematology
Gundersen Health System, La Crosse, Wis.
2021 alumni
Mamatha Gaddam, MD
Assistant Professor, Bone Marrow Transplant
University of Arkansas, Little Rock, Ark.
Swapna Narayana Rao Gari, MD
Clinical Practice
South Georgia Medical Center, Valdosta, Ga.
2020 alumni
Amir Bista, MD
Clinical Practice
Aurora BayCare Medical Center, Green Bay, Wis.
Peter Polewski, MD
Clinical Practice
Aurora Medical Center, Grafton, Wis.
2019 alumni
Dipesh Uprety, MD
Assistant Professor, Thoracic Oncology
Karmanos Cancer Institute, Wayne State University Medicine, Detroit, Mich.
Yazhini Vallatharasu, MD
Clinical Practice
ThedaCare Regional Cancer Center, Appleton, Wis.
2018 alumni
Chai Bhaskar, MD
Clinical Practice
Minnesota Health Fairview, University of Minnesota, Minneapolis, Minn.
Deval Rajyaguru, MD
Clinical Practice
Baptist Health Merl M. Mahr Cancer Center, Madisonville, Ky.
2016 alumni
Amritha Karkera, MD
Clinical Practice
Aurora Health Care, Green Bay, Wis.
Pratima Chalasani, MD
Clinical Practice
Carle Foundation Hospital, Urbana, Ill.
2015 alumni
Chad Pedersen, MD
Clinical Practice
Sidney Health Center Cancer Care, Sidney, Mont.
Pawan Karanam, MD
Clinical Practice
Trinity Health of New England, Hartford, Conn.
2014 alumni
Anusha Madadi, MD
Clinical Practice
UnityPoint Health, Waterloo, Iowa
Meghana Raghavendra, MD
Clinical Practice
Franciscan Health, Indianapolis, Ind.
Striking the right balance
Learn more about the Gundersen “family feel” and how a past graduate achieved work-life balance during his time as a fellow in the Hematology & Medical Oncology program.
Why Gundersen
Call La Crosse Home
We have it all in La Crosse, Wis. Our vibrant city and region support your dream lifestyle with a welcoming community, culture and outdoor adventure.
Housing
Steps from our flagship medical center in La Crosse, our housing options allow you to enjoy the company of your family and the comradery of your colleagues.
Prioritizing Your Wellness
As you learn how to become the clinician you aspire to be, we’ll provide space to prioritize your mind and body wellness, and reach the work-life balance you need.