Dr. Mary L. Markert

John Sleasman is an Allergy and Immunologist in Durham, North Carolina. Dr. Sleasman has been practicing medicine for over 44 years and is rated as an Advanced provider by MediFind in the treatment of Severe Combined Immunodeficiency (SCID). His top areas of expertise are Severe Combined Immunodeficiency (SCID), HIV/AIDS, Infantile Neutropenia, and DiGeorge Syndrome.

As an allergist and immunologist, and the spouse of someone with a food allergy, I bring both professional expertise and personal insight to my work. I am passionate about improving the quality of life for those with asthma, eczema, and food and environmental allergies. Having firsthand experience with the real-world challenges of managing allergic conditions, I take a collaborative approach to care, partnering with families to develop treatment plans that are not only effective, but also practical and aligned with their goals. I also have the privilege of caring for children with primary immunodeficiencies, including severe combined immunodeficiency and congenital athymia. My research focuses on optimizing newborn screening guidelines for these conditions, particularly in premature infants. I am committed to advancing treatment strategies and providing compassionate support to families navigating these complex conditions. Outside of work, I cherish time with my spouse and two children and take every opportunity to enjoy the outdoors. Dr. Hall is rated as an Advanced provider by MediFind in the treatment of Severe Combined Immunodeficiency (SCID). His top areas of expertise are Severe Combined Immunodeficiency (SCID), Infantile Neutropenia, Leukocyte Adhesion Deficiency Type 1, and Paroxysmal Nocturnal Hemoglobinuria (PNH).

I am an immunologist who treats primary immunodeficiencies in children and adults. I see patients with recurrent infections and fevers, drug allergies, hereditary angioedema, and secondary immunodeficiencies. Our program offers cutting-edge clinical trials to provide the best treatment options for patients with immunodeficiencies. When I first meet patients, I try to put them at ease. Coming to a doctor's office can cause a lot of anxiety, especially for children. I try to identify key issues, as well as strategies to help with those problems. My goal is to improve the quality of life for children and adults so they can lead a normal life. Outside of work, I enjoy martial arts, gardening, cooking, and spending time with my wife and three children. Dr. Patel is rated as an Advanced provider by MediFind in the treatment of Severe Combined Immunodeficiency (SCID). His top areas of expertise are Hyper IgE Syndrome, Autosomal Dominant Hyper IgE Syndrome, Common Variable Immune Deficiency, and Severe Combined Immunodeficiency (SCID).