Who We Are

The AIDS Research Institute counts as its constituent members more than 600 researchers, clinicians and staff working in dozens of programs and laboratories throughout UCSF's 4 professional schools—Dentistry, Medicine, Nursing and Pharmacy—and its affiliates and collaborators both local and around the world. Of these, some 40 faculty are members of the ARI Executive Committee, offering advice and insight to steer our course. A core Leadership Committee works closely with the ARI director to make funding and policy recommendations. At the heart of all this is a small, dedicated staff who make things run.

Paul A. Volberding, MD
Paul Volberding


Dr. Volberding is widely considered one of the world's leading AIDS experts. He cofounded one of the first AIDS-designated clinics in the world in the early 1980s at San Francisco General Hospital which has since evolved into the top-rated medical care facility for AIDS in the country. He has served on numerous key national strategic planning, policy, and clinical committees over the course of the epidemic. He is currently director of the UCSF AIDS Research Institute, co-director of the UCSF-Gladstone Center for AIDS Research, and director of the Center for HIV Information, which manages one of the most heavily trafficked websites for HIV information, HIV InSite. He maintains an active HIV outpatient practice at the San Francisco VA Medical Center, seeing a panel of patients he has treated for many years. In 1999, he was elected to the Institute of Medicine of the National Academy of Sciences, and he maintains editorial roles on multiple leading medical journals.

Rebecca Cantor

Managing Director

In her role as managing director of the ARI, Becky enhances the effectiveness of UCSF’s HIV enterprise through mobilizing resources and promoting the efforts of UCSF’s leading researchers, clinicians, and educators. Trained in public health and social work, Cantor’s background spans academia, the non-profit sector, and activism. She served as manager of policy initiatives at the FXB Center for Health and Human Rights at Harvard University, working with governments and civil society in Uganda, Kenya, Malawi, and South Africa to implement human rights–based policies and health interventions. She has experience in community organization, capacity strengthening, and action-oriented research, domestically and abroad.

Larkin Callaghan

Director of Strategic Research Communications and Partnerships

As the director of communications and partnerships for the ARI, Dr. Callaghan oversees media, messaging, and translational research communications for the HIV enterprise at UCSF; relationships with community, city, and state partners; and partnerships with external governing and research bodies. Her experience encompasses work in academia, non-profits, and NGOs. As a UN correspondent, she covered global health and socio-political news in developing countries; as a research reporter for Women Under Siege she verified and codified some of the earliest cases of sexual violence in Syria's civil war. With bylines and as a ghostwriter, she translates science and policy research, crafts speeches, and advises pressers, media strategy, and PR for global health groups. Previously managing director of the UCSF-Gladstone Center for AIDS Research, director of global health education and training programs and professor of research methods at Stanford, and associate research scientist at ICAP, she has launched multilateral research-clinical partnership projects with foreign governments and federal agencies, negotiated financial and policy partnerships, and directed implementation, communications, and evaluation in over 20 countries in Africa, Latin America, the Caribbean, and SE Asia. She received her masters and doctoral degrees from Columbia.

Amy Lockwood

Strategic Advisor

As the chief of staff at UCSF’s Global Health Sciences, Amy leads strategy and operations for the ARI and the Institute of Global Health Delivery and Diplomacy. Lockwood, who has a background covering the business, non-profit, and academic sectors, previously served as deputy director for Stanford University's Center for Innovation in Global Health and as executive director of Project Healthy Children, working with governments and local industries in resource-poor countries to combat micronutrient malnutrition. She has worked with the Clinton Foundation as director of the Global Pediatric HIV/AIDS Program and deputy country director for India. She has experience in strategic planning, management, evaluation and development of global health programs throughout Africa, Asia and Latin America. A graduate of the Stanford Graduate School of Business, she is currently pursuing her doctoral degree in Global Health at UCSF.

Maya Smith

Program Coordinator

As the Program Coordinator for the ARI, Maya works closely with the ARI staff leadership in the execution of the operational, fiscal, and outreach activities. Maya came to UCSF in 2015 where she served as a Practice Coordinator in Radiation Oncology. Prior to her time at UCSF, Maya served in the clinical setting at Memorial Sloan Kettering Cancer Center in New York City. Trained in Public Health at Syracuse University, she has experience in public health outreach, health education, community outreach, and outpatient ambulatory care.

Georgina Lopez

Finance & Administration Director

Georgina is the director of finance and administration for the ARI, Global Health Sciences (GHS), and the Department of Epidemiology and Biostatistics (DEB). Lopez oversees and manages all financial and administrative matters for the ARI, GHS and DEB. She manages all pre- and post-award functions, encompassing awards from a wide range of funding agencies including private, federal, state, local, international governmental, and international private organizations for all research projects of faculty and academic staff at GHS and DEB. She oversees operations at multiple off-campus locations including several local and international sites.

Diane Madsen

Executive Assistant

Diane Madsen brings over 20 years of experience in executive support to the AIDS Research Institute. Diane moved from the frozen tundra of Canada to Palo Alto, CA, in 2005 and has never looked back! For the past 11 years she has worked at Stanford University, and most recently as assistant to the senior associate dean for global health. Diane can be contacted for assistance with arrangements for meetings, events and requests for appointments with Dr. Volberding.


ARI Membership Policies

Roles and Responsibilities of ARI Members, Executive Committee and Leadership Committee