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Our Fellows

Get to know our current Johns Hopkins Hematology/Medical Oncology Fellows.

Chief Fellows

Alexander Ambinder

Alexander Ambinder, M.D., M.P.H.

Medical School: Emory University
Residency: Johns Hopkins University, Chief Resident
Track: Hematology + Medical Oncology
Academic Interest: Leukemia, Myelodysplastic Syndrome
Research Interest: Clinical/Translational
Primary Mentor: Gabriel Ghiaur, M.D. Ph.D.

Fun Fact: I like to rock climb in my free time. There are some good gyms and outdoor climbing spots in the area. Ask me about them if you are interested!

Arsen Osipov

Arsen Osipov, M.D.

Medical School: Virginia Commonwealth University
Residency: Cedars-Sinai Medical Center, Chief Resident
Track: Medical Oncology
Academic Interest: GI malignancies, Pancreatic Cancer, Immunotherapy/Immunology, Tumor Microenvironment
Research Interest: Clinical/Translational
Primary Mentors: Lei Zheng, M.D., Ph.D., Daniel Laheru, M.D.

Fun Fact: I studied Shotokan martial arts for 10 years.

3rd Year Fellows

Alexander Ambinder

Alexander Ambinder, M.D., M.P.H.

Medical School: Emory University
Residency: Johns Hopkins University, Chief Resident
Track: Hematology + Medical Oncology
Academic Interest: Leukemia, Myelodysplastic Syndrome
Research Interest: Clinical/Translational
Primary Mentor: Gabriel Ghiaur, M.D. Ph.D.

Fun Fact: I like to rock climb in my free time. There are some good gyms and outdoor climbing spots in the area. Ask me about them if you are interested!

Won Jin Ho

Won Jin Ho, M.D.

Medical School: Wayne State University
Residency: Case Western Reserve University
Track: Medical Oncology
Academic Interest: Tumor Microenvironment, Immuno-Oncology
Research Interest: Basic Science/Translational
Primary Mentor: Elizabeth Jaffee, M.D., Elana Fertig, Ph.D.

Jagar Jasem

Jagar Jasem, M.B.B.Ch., M.P.H.

Medical School: University of Dohuk, Iraq
Residency: University of Colorado
Track: Hematology
Academic Interest: Malignant & Non-Malignant Hematology
Research Interest: Clinical, Epidemiology
Primary Mentors: Robert Brodsky, M.D., Satish Shanbhag, M.B.B.S., M.P.H., Syed Abbas Ali, M.B.B.S.

Kimberley Lee

Kimberley Lee, M.D.

Medical School: Johns Hopkins University
Residency: Johns Hopkins Bayview
Track: Medical Oncology
Academic Interest: Health Disparities
Research Interest: Clinical, Health Outcomes
Primary Mentors: Vered Stearns, M.D., Jodi Segal, M.D., M.P.H.

Arsen Osipov

Arsen Osipov, M.D.

Medical School: Virginia Commonwealth University
Residency: Cedars-Sinai Medical Center, Chief Resident
Track: Medical Oncology
Academic Interest: GI malignancies, Pancreatic Cancer, Immunotherapy/Immunology, Tumor Microenvironment
Research Interest: Clinical/Translational
Primary Mentors: Lei Zheng, M.D., Ph.D., Daniel Laheru, M.D.

Fun Fact: I studied Shotokan martial arts for 10 years.

Suman Paul

Suman Paul, M.B.B.S., Ph.D.

Medical School: Kolkata Medical College, India
Residency: University of Toledo, Chief Resident
Track: Medical Oncology
Academic Interest: Immunotherapy, T cell malignancy
Research Interest: Basic Science/Translational
Primary Mentor: Bert Vogelstein, M.D., Shibin Zhou, M.D., Ph.D.

Fun Fact: My goal as an avid birdwatcher is to spot all 1023 North American bird species. Long way to go, as have seen 82 so far.

Joshua Reuss

Joshua Reuss, M.D.

Medical School: University of Rochester
Residency: University of Virginia
Track: Medical Oncology
Academic Interest: Thoracic malignancies
Research Interest: Clinical/Translational
Primary Mentors: Patrick Forde, M.B.B.Ch., Julie Brahmer, M.D.

Fun Fact: I enjoy hosting wine-tasting parties. I also play the flute.

Elaine Walsh

Elaine Walsh, M.B.B.Ch., Ph.D.

Medical School: Galway University, Ireland
Residency: Galway University, Ireland
Track: Medical Oncology
Academic Interest: Breast & Ovarian Cancer, Therapeutics
Research Interest: Clinical/Translational
Primary Mentors: Vered Stearns, M.D., Stephanie Gaillard, M.D., Ph.D.

Fun Fact: I have traveled to 6 out 7 continents (yet to explore Antarctica!).

2nd Year Fellows

Arjun Gupta

Arjun Gupta, M.D.

Medical School: All India Institute
Residency: UT Southwestern, Chief Resident
Track: Medical Oncology
Primary Mentor: Daniel Laheru, M.D.

Fun Fact: I am crazy about Harry Potter and am always supportive of impromptu Harry Potter quiz sessions. Same is true for cricket.

Melinda Hsu

Melinda Hsu, M.D.

Medical School: University of Cincinnati
Residency: Indiana University, Chief Resident
Track: Medical Oncology
Primary Mentor: Jarushka Naidoo, M.B.B.Ch.

Christopher Jakubowski

Christopher Jakubowski, M.D.

Medical School: Rutgers University
Residency: Weill Cornell New York-Presbyterian
Track: Medical Oncology
Primary Mentor: Nilofer Azad, M.D.

Amanda Kagan

Amanda Kagan, M.D.

Medical School: University of Vermont
Residency: Johns Hopkins University
Track: Hematology
Academic Interest: Leukemia
Research Interest: Basic Science/Translational
Primary Mentor: Cynthia Wolberger, Ph.D.

Andrew Marple

Andrew Marple, M.D., Ph.D.

Medical School: Rutgers University
Residency: Yale University
Track: Medical Oncology
Academic Interest: Leukemia, Immunotherapy
Research Interest: Basic Science/Translational
Primary Mentor: Challice Bonifant, M.D., Ph.D.

Theodoros Karantanos

Theodoros Karantanos, MD, PhD

Medical School: University of Athens
Residency: Boston University, Chief Resident
Track: Medical Oncology
Academic Interest: Chronic myeloid neoplasms, Leukemia, Stem cell biology
Research Interest: Basic Science/Translational
Primary Mentor: Richard Jones, MD

Marcus Messmer

Marcus Messmer, M.D.

Medical School: Johns Hopkins University
Residency: Johns Hopkins University
Track: Medical Oncology
Primary Mentor: Nina Wagner-Johnston, M.D.

Joseph Murray

Joseph Murray, M.D., Ph.D.

Medical School: Georgetown University
Residency: Johns Hopkins University
Track: Medical Oncology
Research Interest: Basic Science/Translational
Primary Mentor: Valsamo Anagnostou, M.D., Ph.D.

Erica Nakajima

Erica Nakajima, M.D.

Medical School: University of Pittsburgh
Residency: Vanderbilt University
Track: Medical Oncology
Primary Mentor: Patrick Forde, M.B.B.Ch.

Ramy Sedhom

Ramy Sedhom, M.D.

Medical School: Albany Medical College
Residency: Rutgers University, Chief Resident
Track: Medical Oncology
Primary Mentor: Michael Carducci, M.D.

Laura Sena

Laura Sena, M.D., Ph.D.

Medical School: Northwestern University
Residency: Johns Hopkins University
Track: Medical Oncology
Research Interest: Basic Science/Translational
Primary Mentor: Sam Denmeade, M.D.

Mamie Thant

Mamie Thant, M.D.

Medical School: University of Pittsburgh
Residency: University of Pittsburgh
Track: Hematology
Academic Interest: Sickle Cell Disease
Research Interest: Clinical
Primary Mentor: Sophie Lanzkron, M.D., M.H.S., Rakhi Naik, M.D., M.H.S.

Evan Wu

Evan Wu, M.D.

Medical School: University of Miami
Residency: Baylor University
Track: Medical Oncology
Primary Mentor: Tanguy Lim-Seiwert, M.D.

Jackie Zimmerman

Jackie Zimmerman, M.D., Ph.D.

Medical School: University of Alabama
Residency: Johns Hopkins University, Chief Resident
Track: Medical Oncology
Research Interest: Basic Science/Translational
Primary Mentor: Elizabeth Jaffee, M.D.

1st Year Fellows
Parul Agarwal

Parul Agarwal, M.D.

Medical School: Boston University
Residency: University of Pennsylvania, Chief Resident
Track: Medical Oncology

Marina Baretti

Marina Baretti, M.D.

Medical School: Universita di Pisa
Residency: University of Milan
Track: Medical Oncology

Jenna Canzoniero

Jenna Canzoniero, M.D.

Medical School: University of Michigan
Residency: University of Maryland, Chief Resident
Track: Medical Oncology

Gloria Gerber

Gloria Gerber, M.D.

Medical School: Rutgers Robert Wood Johnson
Residency: Cornell University
Track: Hematology

Thatcher Heumann

Thatcher Heumann, M.D., M.P.H.

Medical School: Emory University
Residency: New York University
Track: Medical Oncology

Michael Hwang

Michael Hwang, M.D.

Medical School: Rutgers New Jersey
Residency: Mount Sinai
Track: Medical Oncology

Jennifer Jones

Jennifer Jones, M.D.

Medical School: University of Chicago
Residency: University of California, Los Angeles, Chief Resident
Track: Hematology

Emily Nizialek

Emily Nizialek, M.D., Ph.D.

Medical School: Case Western Reserve
Residency: Case Western Reserve
Track: Medical Oncology

Katherine (KC) Rappazzo

Katherine (KC) Rappazzo, M.D.

Medical School: University of California, San Diego
Residency: Vanderbilt University
Track: Medical Oncology and Hematology

Susan Scott

Susan Scott, M.D.

Medical School: Yale University
Residency: Cleveland Clinic, Chief Resident
Track: Medical Oncology

Najeff Waseem

Najeff Waseem, M.D.

Medical School: George Washington University
Residency: Stanford University
Track: Medical Oncology and Hematology

Daniel Zabransky

Daniel Zabransky, M.D., Ph.D.

Medical School: Johns Hopkins University
Residency: Johns Hopkins University
Track: Medical Oncology

Fellow Class Pictures

First Year Fellows Class Picture

1st Year

Second Year Fellows Class Picture

2nd Year

Third Year Fellows Class Picture

3rd Year

Former Fellows

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