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Infectious Disease Fellowship Leaders

Program Directors

  • Nancy Law, D.O., M.P.H.

    Nancy Law, D.O., M.P.H.

    Fellowship Program Director


    Nancy Law, D.O., M.P.H. obtained her undergraduate degree from Pennsylvania State University where she studied Life Sciences and minored in Microbiology, Chinese, and Women’s Studies.  Dr. Law then went on to pursue a dual degree getting her MPH with a concentration in Health Planning and Geriatric Health and her DO degree in June 2011 from A.T. Still University School of Osteopathic Medicine in Arizona.  Dr. Law completed two fellowships, the first in Infectious Diseases in her hometown of Philadelphia at Drexel University College of Medicine, and the second fellowship in Transplant Infectious Diseases at University of Toronto/University Health Network.  She started as faculty at UCSD in 2017. Her areas of clinical interests include Solid Organ Transplant and Oncology Infectious Diseases as well as Antimicrobial Stewardship in immunocompromised hosts.  Her other passions include medical education and building diversity and cultural competency in all areas of medicine. She is also a strong advocate for physician wellness.  She served as the Associate Program Director for the ID Fellowship Program before moving into the Program Director role.  Dr. Law also serves as the Assistant Director of Epidemiology & ASP, for the Immunocompromised Services.   She is an active member of the International Society for Heart and Lung Transplantation and the American Society of Transplant Infectious Disease Community of Practice.  Dr. Law spends her free time planning the next romantic date or adventure for her husband, Ross, and her 2 children Sofia and Max.

    Email: nalaw@health.ucsd.edu 

  • Mary Lewinski, M.D., Ph.D.

    Mary Lewinski, M.D., Ph.D.

    ​​Associate Fellowship Program Director


    Mary Lewinski, M.D., Ph.D., earned undergraduate degrees in Philosophy and Political Science with a Minor in Russian Language and Literature from the University of Southern California. She pursued her MD and PhD in Biomedical Sciences at UC San Diego as part of the Medical Scientist Training Program. Her graduate research on "Retroviral Integration: Mechanism and Consequences" was conducted in the laboratory of Rick Bushman, PhD, then at the Salk Institute for Biological Studies. She completed her research-track Internal Medicine residency as part of UC San Diego's Physician Scientist Training Pathway before matriculating into UC San Diego's Infectious Diseases Fellowship. Her T32-funded fellowship research in the laboratory of John Guatelli, MD, focused on HIV-host interactions and led to an NIH K08 award, "HIV-1 Modulation of the Ubiquitinome and Its Effects on Cell-to-Cell Transmission." Since starting her faculty position at UC San Diego in 2014, she has continued her involvement with the MSTP and PSTP and currently serves as an Associate Program Director for the ID Fellowship Program. Her research interests include viral-host interactions with active projects investigating HIV and SARS-CoV-2. She also serves as the Developmental Core Director for the San Diego Center for AIDS Research. Her clinical work is primarily at the VA San Diego Healthcare System and focuses on HIV Primary Care and General ID. Dr. Lewinski spends her free time homebrewing (having completed UC San Diego's Brewing Professional Certificate Program), playing with her Maltipoo, Nikita, and visiting national parks with her husband, Jeff.

    Email: mlewinski@health.ucsd.edu 

  • Michael Tang, M.D.

    Michael Tang, M.D.

    Associate Fellowship Program Director


    Michael Tang, M.D., completed his undergraduate degree at The Ohio State University in Biochemistry. He completed medical school and Internal Medicine Residency at Washington University School of Medicine in St Louis, Missouri before coming to UC San Diego for his Infectious Diseases Fellowship training in 2018. Since starting his faculty position in 2022, his areas of clinical interest include General Infectious Diseases and HIV medicine. His primary passion is medical education. He directs the 3rd and 4th year medical student clerkships for Infectious Diseases Consults and is involved as a mentor for the IM residency. He is currently serving as an Associate Program Director for the ID Fellowship. He is an active member of the Infectious Diseases Society of America. In his free time, he enjoys traveling, hiking, playing tennis, exploring the beaches of San Diego and spending time with his wife and daughter. 

    Email: m1tang@health.ucsd.edu