Dr. David R. Weber

Lee Harrison is an Infectious Disease provider in Pittsburgh, Pennsylvania. Dr. Harrison is highly rated in 10 conditions, according to our data. His top areas of expertise are Strep Throat, Methicillin-Resistant Staphylococcus Aureus (MRSA), Sepsis, and Bacterial Meningitis.

John Mellors, MD, specializes in infectious diseases and is board-certified in infectious disease and internal medicine by the American Board of Internal Medicine. He is affiliated with UPMC Presbyterian. Dr. Mellors received his medical degree from Dartmouth College Geisel School of Medicine and completed his residency and fellowship at Yale New Haven Hospital. Dr. Mellors is highly rated in 4 conditions, according to our data. His top areas of expertise are HIV/AIDS, Sepsis, COVID-19, and Severe Acute Respiratory Syndrome (SARS).

Deborah McMahon, MD, is certified in internal medicine and infectious disease by the American Board of Internal Medicine. She practices at University of Pittsburgh Physicians, Department of Medicine, Division of Infectious Disease and is affiliated with UPMC Presbyterian. She completed her fellowship at University of Pittsburgh School of Medicine, residency at Maimonides Medical Center, and medical degree at Temple University School of Medicine. Are you already a patient of this provider and have a MyUPMC account? Log in to MyUPMC to schedule. Dr. Mcmahon is highly rated in 5 conditions, according to our data. Her top areas of expertise are HIV/AIDS, Sepsis, Myelitis, and AIDS Dementia Complex.