Dr. Ambar Haleem

Christopher Saddler, MD, is a UW Health infectious disease doctor and an assistant professor in the Department of Medicine, Division of Infectious Diseases at the University of Wisconsin School of Medicine and Public Health. Dr. Saddler has special expertise in transplant infections and immune-compromising conditions.Dr. Saddler helps doctors diagnose and treat infectious diseases, including complex conditions. He treats varied disorders ranging from fungal infections and infectious diarrhea to non-tuberculosis bacterial infections and rare viral diseases. His clinical interest focuses on treating people with immune system problems that increase their risk for infections. These include organ transplant recipients, people with cancer and those who have had bone marrow transplants or chemotherapy.Dr. Saddler is a teacher and problem-solver at heart. After easing patients’ fears, he educates them about their condition and helps them understand their treatment options. He takes a patient-centered approach to care, individualizing treatment to meet each patient’s medical needs and personal values.Dr. Saddler also conducts research to advance the prevention, treatment and management of infectious disease. He leads clinical trials and other studies, including studies focused on infections that present a higher risk to transplant patients.In his free time, Dr. Saddler enjoys spending time with his family, traveling and staying active.It's rewarding to care for patients and know you made a real difference. Seeing people get better — sometimes much better — is amazing. Dr. Saddler is highly rated in 6 conditions, according to our data. His clinical expertise encompasses Cytomegalovirus Infection, Cytomegalic Inclusion Disease, Nocardiosis, and Nontuberculous Mycobacterial Lung Disease. Dr. Saddler is board certified in Infectious Diseases and Internal Medicine. Dr. Saddler is currently accepting new patients.

Dr. Gauthier’s research seeks to understand the pathogenesis of the thermally dimorphic fungi at the molecular level using _Blastomyces dermatitidis_ as a model organism. As a physician-scientist his goal is to bring the research findings at the bench into the clinic to improve the care and clinical outcomes of patients with invasive fungal infections. Dr. Gauthier is highly rated in 5 conditions, according to our data. His clinical expertise encompasses Blastomycosis, Mastoiditis, Osteomyelitis, and Osteomyelitis in Children. Dr. Gauthier is board certified in Infectious Diseases. Dr. Gauthier is currently accepting new patients.

Kevin Gregg is an Infectious Disease provider practicing medicine in Madison, Wisconsin. Dr. Gregg is highly rated in 17 conditions, according to our data. His clinical expertise encompasses Cytomegalic Inclusion Disease, Febrile Neutropenia, Cytomegalovirus Infection, and Nocardiosis. Dr. Gregg is board certified in Infectious Diseases. Dr. Gregg is currently accepting new patients.