• Chady Abboud Leon MD

  • Physician - Hematology/Oncology

    • Marshfield - Oncology
    • 1000 North Oak Avenue 3A2 Marshfield, WI 54449


Fellowship, Chief Fellow - Oncology and Hematology, MD Anderson Cancer Center at Cooper University Hospital, Camden, NJ
Fellow of the Year, Cooper University Hospital, Camden, NJ
Fellow of the Year, Cooper University Hospital, Camden, NJ
Residency, Internal Medicine, Mount Sinai School of Medicine (MSSM) - Englewood Hospital and Medical Center, Englewood, NJ
Residency, Department of Internal Medicine, Oldenburg Hospital, Klinikum Oldenburg, Germany
Residency, Department of Internal Medicine , Dessau Hospital, Stadtisches Klinikum Dessau, Germany
Physician in training, Tal-Arboush Clinic, Tal-Arboush, Syria
MD, School of Medicine, University of Damascus , Damascus, Syria
Student Rotation, Department of Oncology and Hematology, Benjamin Franklin University Hospital of the Free University of Berlin, Berlin, Germany
Student Rotation, Department of Oncology and Hematology, American University of Beirut-Medical Center, Beirut, Lebanon

Work Experience

2016 to Present:
Attending Physician, Memorial Medical Center, Neillsville, WI
2014 to Present:
Oncologist / Hematologist, Marshfield Clinic Inc. - Marshfield Center, Marshfield, WI
2014 to Present:
Attending Physician, Marshfield Medical Center - Marshfield, Marshfield, WI

Board Certifications

2011 to 2021:
American Board of Internal Medicine
2014 to 2022:
American Board of Internal Medicine - Oncology
2015 to 2022:
American Board of Internal Medicine - Hematology

Select Publications

  • Georgi A, Schumacher J, Leon CA, Wolf AV, Klein K, Bohenz KV,...Jamra RA. (2009 April). No association between genetic variants at the DGCR2 gene and schizophrenia in a German sample. Psychiatr Genet.. 19(2):104.
    PubMed ID: 19668116
  • Leon CA, Schumacher J, Kluck N, Herold C, Schulze TG, Propping P,...Jamra RA. (2011 April). Association study of the GRIA1 and CLINT1 (Epsin 4) genes in a German schizophrenia sample. Psychiatr Genet.. 21(2):114.
    PubMed ID: 21116212
  • Leon CA, Georges P, Zaeeter W. (2013 May). Vitamin B12 deficiency. N Engl J Med.. 368(21):2041.
    PubMed ID: 23697528
  • Georges P, Rajagopalan K, Leon C, Singh P, Ahmad N, Nader K, Kubicek GJ. (2014 Dec 10). Chemotherapy advances in locally advanced head and neck cancer. World J Clin Oncol. 5(5):966-72.
    PubMed ID: 25493232
  • Nader K, Behrens DS, Leon CA, Schwarting R, Ferber A. (2014 Jul). Iatrogenic lymphoproliferative disorder. Am J Hematol. 89(7):787-8.
    PubMed ID: 24729413
  • Bilen MA, Hariri H, Leon C, Guo CC, Kuban DA, Pisters LL, Tu SM. (2014 Aug). Positive FDG-PET/CT scans of a residual seminoma after chemotherapy and radiotherapy: case report and review of the literature. Clin Genitourin Cancer. 12(4):e147-50.
    PubMed ID: 24674785
  • Yachoui R, Leon C, Sitwala K, Kreidy M. (2017 Jun). Pulmonary MALT Lymphoma in Patients with Sjögren's Syndrome. Clin Med Res. 15(1-2):6-12.
    PubMed ID: 28487450