Marissa Maier, MD

Marissa Maier, MD

Marissa Maier, MD
Associate Professor of Medicine
Division of Infectious Diseases, VAMC


B.A.: Brown University, Magna cum laude, Honors Environmental Studies, Honors Development Studies, 1997
M.D.: University of California at San Francisco (UCSF) School of Medicine, 2007


Internal Medicine, Oregon Health & Science University, Portland, OR, 2010


Infectious Diseases, Oregon Health & Science University, Portland, OR, 2012
Doris Duke Clinical Research Fellowship, 2006.


Dr. Marissa Maier is an Associate Professor of Medicine in the Division of Infectious Diseases. She is a staff physician at the VA Portland Health Care System, and is the National Public Health Infectious Diseases Officer for the VA office that oversees policies pertaining to HIV, viral hepatitis, and sexually transmitted infections.  

Dr. Maier enjoys biking, eating, gardening, exploring the outdoors, and hanging with her family. She has never climbed any important peaks, but instead searches for the perfect mint chip ice cream.

Educational background

Dr. Maier graduated magna cum laude from Brown University, with a double major in Environmental Studies and Development Studies.  She completed medical school at UC San Francisco, where she received a Doris Duke Clinical Research Fellowship and assessed reproductive health among women living with HIV in Uganda alongside her stellar Ugandan and Nigerian colleagues.  She subsequently returned to her hometown of Portland, Oregon, where she completed her Internal Medicine residency and Infectious Diseases fellowship at OHSU before joining the Infectious Disease faculty at OHSU in an appointment at the Portland VA.

Clinical interests

Dr. Maier’s areas of clinical specialization are HIV, HIV prevention, viral hepatitis (including co-infection), and sexually transmitted infections (STIs). She also greatly enjoys practicing general infectious diseases, from endocarditis to prosthetic joint infections, and she is integrated into the neuropathic foot infection multidisciplinary clinic at the Portland VA. She practices outpatient medicine at the Portland VA, and inpatient medicine at OHSU and the Portland VA. She loves working with the internal medicine residents and infectious diseases fellows at OHSU, and the Veterans at the VA.

Research interests

Dr. Maier’s research focus is in public health, epidemiology, and health systems, focusing on HIV, HIV prevention, viral hepatitis, and STIs.  She is also committed to developing data infrastructure to inform wise clinical, operational, and policy decisions for the VA national system and more broadly. She has managed the development of two national databases within the VA: one encompassing all individuals with HIV in VA care, the second encompassing all individuals with hepatitis C in VA care.  She has evaluated the cascade of hepatitis C care within the VA, whether hepatitis C cure is associated with health care cost benefits, and the incidence of syphilis within the VA.