Each SHARP scholar is matched with a mentor team, with whom they work throughout the summer. These mentors provide guidance on the scholar’s project, serve as a sounding board for the scholar’s educational career and goals, and provide coaching on how to work in a public health research environment.

Bios for our mentors are listed below. Mentors who are participating in the 2019 cycle are marked with a * . Other mentors will offer presentations over the summer.

John A. Sauceda, PhD, MSc is one of the principal investigators (MPI) of SHARP and a health psychologist. He is Assistant Professor at the Center for AIDS Prevention Studies in the Division of Prevention Science at UCSF. His research aims to improve mental health outcomes and reduce health disparities in Spanish and English-speaking Latino/a communities impacted by HIV. His NIMH-funded research projects include assessing the concept and dimensions of engagement in HIV care among Spanish and English-speaking Latinos in San Francisco, and to model the trajectories of HIV treatment outcomes as a function of depression and substance use in a national cohort of Latinos in HIV care settings. His current NIMH K01 is to develop a sequential multiple assignment randomized trial to develop an adaptive cognitive and behavioral therapy program for depression with the aid of a mobile health tool. He seeks to understand the role of Latino/a culture and Spanish language in mental health treatment utilization and HIV care and treatment management.

Kartika Palar, PhD is an Assistant Professor in the Division of HIV, Infectious Disease and Global Medicine at UCSF. Her interdisciplinary research focuses on the social determinants of health in HIV, diabetes and other chronic diseases, with special focus on food insecurity. She is co-Principal Investigator of the Changing Health through Food Support (CHEFS) Study, a randomized trial testing the impact of medically-appropriate food support on health outcomes among low-income people living with HIV in the San Francisco Bay Area, in collaboration with community-based organization Project Open Hand. She is also the Principal Investigator of the 5-year NIH-funded Women, HIV/AIDS and Diabetes (WAND) Study, investigating the role of social and economic factors, including food insecurity, on diabetes health among US women living with HIV. Internationally, she is Principal Investigator of a study to examine the impact of urban gardening on cardiovascular disease risk factors among food-insecure people living with HIV in the Dominican Republic (ProMeSA-CVD). She was recently awarded the CFAR Early Career Investigator Award of Excellence in Behavioral Research for her work addressing social determinants of health in HIV.

Rafael obtained a BA in Psychology from San Francisco State University, and was part of the 2014 SHARP cohort. He is now the Community Program Manager at Bridge HIV at SFDPH. He is interested in addressing the sociocultural and structural barriers that prevent certain communities from accessing HIV/AIDS & health information services. He has helped develop, pilot and implement multiple protocols – including recruitment and retention of participants; oversaw the collection and processing of lab requisitions – including phlebotomy; provided risk reduction and HIV counseling to study participants; and collected, secured and analyzed qualitative/ quantitative data from a variety of research studies.

As a socio-behavioral scientist, Dr. Santiago-Rodríguez is interested in understanding the impact of social determinants of health, including stigma, on the access and use of HIV/AIDS Prevention Services and Care among the Latinx population in the US and Puerto Rico. Her most recent research focused on identifying structural barriers and facilitators for HIV prevention services among young gay, bisexual and other men who have sex with men in Puerto Rico. Dr. Santiago-Rodriguez employs both qualitative and quantitative methods in her research to have a comprehensive understanding of the social determinants of health in study

I am a behavioral scientist with multidisciplinary training from the fields of public health, psychology, anthropology, and sociology. Broadly, my research seeks to understand and intervene upon health behaviors related to HIV/AIDS, alcohol consumption, mental health, and intimate partner violence within international and domestic settings. Specifically, I am interested in dyadic aspects of health within heterosexual and same-sex couples. My research is grounded in theory from the field of relationship science, and employs mixed-methods and innovative dyadic analysis techniques (qualitative and quantitative) to understand couple-level health behavior. My primary line of research takes place in southern Africa (Malawi and South Africa) and aims to understand how relationship factors and primary partners impact engagement in HIV care and treatment. We are currently in the process of translating the findings into an economic and relationship-strengthening intervention for HIV-affected couples who drink alcohol, to ultimately improve relationship functioning and mental/physical health.

Dr. Judy Y. Tan is Assistant Professor of Medicine, at the Center for AIDS Prevention Studies (CAPS), Division of Prevention Science, at UCSF. She received her doctorate in Social Psychology from the University of Connecticut, where she was a fellow in the NIMH T-32 Predoctoral Fellowship, Social Processes of AIDS. She has certifications in Quantitative Research Methods and Health Psychology. Dr. Tan’s research focuses on HIV-related behaviors among gay men of color and is guided by her interest in the health and behavioral impact of social inequality in marginalized and disenfranchised populations. Her work utilizes theory and advanced quantitative methods that include daily process methods and multilevel analyses. Dr. Tan has recently been awarded a Mentored Research Scientist Development Award (K01) from the National Institute of Mental Health to develop a couple-based mobile health intervention for enhancing HIV care engagement outcomes among HIV+ black men who have sex with men.

Phillip Coffin, MD, MIA, FACP is the Co-Principal Investigator of SHARP. He is the Director of Substance Use Research at the San Francisco Department of Public Health. He is a board certified internal medicine and infectious diseases clinician; specific foci of Dr. Coffin’s training include HIV management, buprenorphine maintenance, addiction management, toxicology, and viral hepatitis care. As Director, Dr. Coffin oversees several pharmacologic and behavioral trials that aim to reduce substance use and related risk behaviors for blood-borne virus infection. Since the early 1990s, Dr. Coffin has been involved in developing and studying services for drug users, including syringe exchange, pharmacotherapy, and overdose prevention programming.

Dr. Coffin completed his undergraduate studies at Brown University, graduate studies in international affairs at Columbia University, and obtained his medical degree at the University of California, San Francisco. He returned to Columbia University to complete his internal medicine residency, then moved to Seattle to complete his training with an infectious diseases fellowship at the University of Washington.

In addition to the intersection between substance use and HIV, Dr. Coffin’s interests include screening and linkage to care for persons with hepatitis C; opioid overdose and the distribution of naloxone; mathematical modeling of substance use and infectious diseases; and clinical care for HIV, viral hepatitis, and general infectious diseases. Dr. Coffin has an established record of clinical experience, academic service, and innovative research, and his expertise in the field is evidenced by his extensive presentation and publication record. Dr. Coffin is also credited with developing a major international conference, Preventing Heroin Overdose: Pragmatic Approaches, and establishing the first hospital-based naloxone distribution program at Columbia University Medical Center.

Dr. Godfred Masinde, PhD, MBA, HCLD is presently the Public Health Laboratory Director for City and County of San Francisco Public Health Laboratory, San Francisco, California. He is responsible for overall administration and management of SF Public Health Laboratory.

Dr. Masinde has also held the following positions:
  • Technical Supervisor (CLIA Microbiology Lab) at Theranos Inc., Palo Alto, CA
  • Supervising Public Health Microbiologist, NSYM County Public Health Laboratory, Fairfield, CA
  • Public Health Microbiologist (Supervising), San Bernardino County Public Health Lab. San Bernardino, CA
  • Bioterrorism Coordinator, San Bernardino County Public Health Lab. San Bernardino, CA
  • Technical Support Specialist, Thermo Fisher, Carlsbad, CA
  • Associate Director, Long Beach Genetics, Rancho Dominguez, CA
  • Production Manager Eurogentec Inc., North America, San Diego, CA
  • Assistant Research Professor and Senior Scientist at Veterans Hospital in Loma Linda and Loma Linda University, Loma Linda, CA.
  • Part time teaching Biology/Microbiology, Cal State San Bernardino, San Bernardino Valley College, Crafton Hills College in Yucaipa, CA.

Dr. Masinde holds: BS (Zoology) and MS (Medical Parasitology/Immunology) from University of Nairobi-Kenya, a PhD in Medical/Molecular Microbiology from Tulane University in New Orleans, LA, and MBA (Marketing) from Baker College in Flint, Michigan. He also holds the following certifications: Public Health Microbiologist (State of California), High Complexity Laboratory Director (ABB), Molecular Biologist (ASCP), Microbiologist (ASCP), Clinical Microbiology Specialist (State of CA) and Clinical Microbiologist (Director)(State of CA).

Parya Saberi, PharmD, MAS is an Assistant Professor at the Center for AIDS Prevention Studies (CAPS) in the Department of Medicine at the University of California, San Francisco. Dr. Saberi is funded by the National Institute of Mental Health (NIMH) through R21 and R34 awards, the National Institute of Nursing Research (NINR) through an R01 award, and the California HIV Research Program (CHRP) for Health Disparities. Her research includes assessing technology-based strategies such as mobile applications, video-conferencing tools, and text messaging to improve ART adherence and engagement in HIV care among youth living with HIV. She is also examining novel adherence assessment methods and an HIV pre-exposure prophylaxis (PrEP) tool for healthcare providers who are prescribing PrEP.

Ifeoma Udoh, PhD is a senior evaluation advisor with extensive experience in implementing international and domestic HIV/AIDS programming and monitoring and evaluation activities in low resource settings around the world, including the Caribbean, Asia, and the United States.

Ife’s interests lay in the use of community based participatory approaches in behavioral and clinical interventions to address the structural impediments to accessing HIV prevention, care and treatment. In particular, these include the design and use of rapid assessments and ethnographic methods to iteratively inform program development and improvement, with particular emphasis on communities of color and those that are most at risk, such as men who have sex with men, young women, and people living with HIV/AIDS.

Her experience and passion is in engaging community based organizations serving marginalized groups to design and implement monitoring and evaluation activities that reinforce evidence driven decision making. She believes in developing long term capacity within communities to continuously implement M&E activities which are rigorous and grounded in the realities of the communities being served.

After completing a doctorate in Medical Anthropology, Ife subsequently went on to work on international monitoring and evaluation and training programs through the President Emergency Plan for AIDS Relief (PEPFAR), with initiatives of the Global AIDS Program at CDC, and MEASURE Evaluation (USAID), serving as an in country M&E advisor to National AIDS Programs and community based organizations in both the Eastern Caribbean and South East Asia.

Laura Lazar, MPH has been Coordinator at since Feb 2017. Before that she worked as the Program Coordinator for Research and Data Analytics at AVAC in New York and completed a policy fellowship with amfAR in Washington, DC. She graduated with an MPH from Columbia Mailman School of Public Health in 2015.

Shannon Weber, MSW is the Director at and Founder and Director of, and She is passionate about writing love notes, creating public displays of affection and mapping the end of HIV. Shannon received the 2018 UCSF Chancellor’s Award for Public Service.

Sean Arayasirikul, PhD is a Medical Sociologist whose work is focused on the entanglements of technology in society; in particular, its role in constructing emerging conceptions of health, illness and identity, and as a means to disrupt the production of stigma, discrimination, social isolation and negative health outcomes. He was an National Institute for Alcohol Abuse and Alcoholism (NIAAA) T32 Pre-Doctoral Fellow at the Alcohol Research Group, UC Berkeley. He was named an American Sociological Association Minority Fellow. He served as the Health Literacy and Health Policy Fellow at the United States Department of Health & Human Services (DHHS) and as a Scholar at the Health Resources and Services Administration (HRSA). In Washington, D.C., he oversaw mobile health and HIV testing initiatives at Whitman-Walker Health and was a mobile HIV Case Manager for newly diagnosed HIV-positive youth in Los Angeles County. Deeply committed to adolescent health, Sean has represented youth communities in HIV community planning processes as a member of the HIV Prevention Planning Committees in Los Angeles, Washington, D.C., and San Francisco. Currently, Sean is a Research Scientist at the Center for Public Health Research at the San Francisco Department of Public Health and is a Co-PI and Co-I on a number of projects focused on technology, PrEP, and HIV among racial, sexual and gender minority populations.

Sean is a son to immigrants, a 2nd generation Thai American. As an LGBT youth, he survived homelessness and was raised working poor. He earned a Ph.D. in Sociology at the University of California, San Francisco and his dissertation research used intersectionality to examine social inequality among transwomen in the San Francisco Bay Area and at the intersections of race, gender, and sexuality. He is also the San Francisco Father of the Iconic House of Infiniti, a legendary staple in the House and Ballroom Community. Sean seeks to disrupt social unevenness, think resistance into reality, and change the material conditions that weigh each and every one of us down, but especially the vulnerable, marginalized and othered.

Emily Behar, MS is a Research Study Coordinator at the Substance Use Research Unit at the San Francisco Department of Public Health (SFDPH) where she manages a portfolio of clinical, behavioral and implementation research studies aimed to reduce opioid-related morbidity and mortality. Emily’s research focuses on improving opioid stewardship initiatives in primary care settings to support patient-centered management of pain and opioid use disorder. She has worked extensively to increase naloxone prescribing to patients on chronic opioids in San Francisco and throughout California. Emily received a Master’s of Science in Medical Anthropology from the University of Pennsylvania where she focused on systemic structures of violence in vulnerable populations. Emily is currently a doctoral candidate in the Global Health Sciences Department at the University of California, San Francisco.

Jaclyn Hern, MPH is a Research Study Coordinator at the San Francisco Department of Public Health (SFDPH). She received her Masters of Public Health in Epidemiology from George Washington University in Washington, DC. Here at SFDPH, Jaclyn assists in the coordination of pharmacologic studies that aim to reduce substance use and related HIV risk behaviors. Previously, Jaclyn coordinated studies looking at antiretroviral medication adherence among HIV-infected pediatric patients and the acceptance of routine HIV screening in pediatric emergency departments at Children’s National Medical Center in Washington, DC. She has also worked on a city-wide longitudinal cohort there that aims to describe clinical outcomes and improve the care of HIV-infected individuals.

Jess Lin, MPH is a Research Unit Coordinator at the Center for Public Health and the Project Director of the Trans*National Cohort Study, an international longitudinal study of HIV risk and incidence amongst trans women in the United States, Brazil, China, and Namibia. Prior to coming to SFDPH, she worked as an investigator regarding the health needs and population size estimations of homeless youth in the United States and Kenya; as an evaluator of sexuality education curricula for adolescents in California and structural interventions for gay, bi, and trans men in San Francisco; and as an outreach worker with youth experiencing homelessness and people who inject drugs. She holds a master’s in public health from UC Berkeley.

Albert Liu, MD, MPH is the Director of HIV Prevention Intervention Studies at Bridge HIV and an Assistant Clinical Professor of Medicine at UCSF. He is a board certified internist and instructs internal medicine residents in the care of underserved populations. After completing his MD at UCSF and MPH at UC Berkeley, he served as Medical Director of the Haight Ashbury Free Medical Clinic for 2 years. Dr. Liu’s research focuses on pre-exposure prophylaxis (PrEP), the use of HIV treatment medications to prevent new infections in HIV-negative individuals. He is currently the Protocol Chair of the Demo Project, a PrEP Demonstration Project in San Francisco, Miami, and Washington DC. Dr. Liu was awarded an NIH grant to develop strategies to promote PrEP adherence in real-world settings. The EPIC study (Enhancing PrEP in Communities) will explore factors that influence adherence and risk behaviors in the Demo Project and develop and test a package of online and mobile health tools to promote the uptake and adherence to PrEP in diverse settings. Dr. Liu is also directing the San Francisco effort in an international study evaluating the safety of a rectal gel – known as a microbicide – to prevent the acquisition of HIV among men who have sex with men and transgender women.

Willi McFarland, MD, PhD, MPH&TM is a Principal Investigator of the Trans*National Cohort Study. He is the Director of the Center for Public Health Research at the San Francisco Department of Public Health. He is also a Professor of Epidemiology and Biostatistics at the University of California, San Francisco, affiliated with the Prevention and Public Health Group in the Global Health Sciences Department and the Center for AIDS Prevention Studies (CAPS). Dr. McFarland has conducted research on the epidemiology and prevention of HIV in California, the US, and internationally. His primary emphasis is on surveillance in key populations and the use of data for public health decision-making. He’s eager to help achieve the goal of recruiting the most representative and inclusive sample of transwomen to date, the most accurate measure of HIV incidence among transwomen, and the most useful data for developing effective tools for HIV prevention. His favorite thing is sea salt.

Chris Rowe, MPH is Research Analyst at the Substance Use Research Unit at the San Francisco Department of Public Health (SFDPH) where he conducts secondary data analyses and produces reports and manuscripts for dissemination, manages data for several ongoing studies and surveillance of substance use related health outcomes in the city of San Francisco, and provides analytic and statistical support for various studies and projects throughout the research group. His research interests include broader health issues of vulnerable populations and the effectiveness of related policies, programs, and interventions. Chris received a Master’s of Public Health in Epidemiology and Biostatistics from the University of California, Berkeley where he conducted research to understand the dual effects of pesticide exposure and poverty among children in an agricultural community. Chris is currently a doctoral student in Epidemiology at the University of California, Berkeley, where he is focusing on quantitative methods to evaluate the effects of programs and policies using administrative and routinely collected data.

Glenn-Milo Santos, PhD, MPH is a Senior Research Scientist in the Center for Public Health Research in the San Francisco Department of Public Health and an Assistant Professor in the Department of Community Health Systems at the University of California San Francisco (UCSF). He obtained his Ph.D. in Epidemiology and Translational Sciences at UCSF and his M.P.H. in Epidemiology and Biostatistics at the University of California Berkeley.

Dr. Santos’ research focii involve the development of pharmacologic and behavioral interventions to reduce substance use and HIV-related sexual risk behaviors among key populations at risk for HIV, including men who have sex with men (MSM), transgender individuals, and people who use drugs. He has published over 30 peer-reviewed articles in the past 5 years and has presented at national and international conferences on these topics ( He was part of the United Nations Office on Drugs and Crime’s Editorial Board for the Technical Guidelines on Stimulant Use and HIV. Additionally, he currently serves in the Research Advisory Group for the Global Forum on MSM and HIV, and in Executive Committee of the AIDS Research Institute at UCSF.

Dr. Santos was the recipient of the Young Innovator award at the Centers For Disease Control and Prevention’s National HIV Prevention Conference in 2011. Additionally, he received the National Institute on Drug Abuse Dissertation Research Award in 2012 and the University of California President’s Dissertation-Year Fellowship Program Award in 2013. Recently, he was awarded the NIH Director’s Early Independence Award (EIA) to support a five-year study, entitled “Say When” (, evaluating a medication to reduce heavy episodic drinking, “binge drinking”, and alcohol-related sexual risk behaviors among MSM at risk for HIV. The EIA is part of the NIH’s “High Risk-High Reward” initiative that funds scientists with exceptional creativity and highly innovative research projects addressing major contemporary challenges in biomedical and health research.

Susan Scheer, PhD, MPH, has over 20 years of experience in HIV research and over 12 years of experience working with HIV surveillance data and related studies. She works closely with other HIV surveillance jurisdictions nationally on capacity building & shares HIV surveillance best practices both nationally and internationally. Additionally, Dr. Scheer has developed methods for using surveillance data to monitor and evaluate HIV prevention programs and has extensive experience applying these methods and data to HIV prevention strategies.

Kelly D. Taylor, PhD, MPH is a research scientist with the Institute for Global Health Sciences at the University of California, San Francisco. Educated at University of Michigan, Vanderbilt University, and University of California Berkeley, Dr. Taylor is a behavioral scientist with a background in community psychology, epidemiology, and evaluation methodology. She completed her postdoctoral fellowship in AIDS prevention at the University of California San Francisco, Center for AIDS Prevention Studies. Her primary research interests are in research capacity building in low resource settings, health disparities, and psychosocial determinants of health in developing countries, particularly, the role of health seeking behavior among key populations at risk for HIV. She is also interested in the treatment of HIV and other chronic diseases such as hypertension and diabetes. Dr. Taylor’s emphasis is in Sub-Saharan Africa, and she has worked professionally in Ghana, Kenya, Mozambique, Nigeria, Senegal, and South Africa. Her current projects include designing and conducting population size estimations in Ghana and evaluating implementation of health information systems in Mozambique.

Caitlin Turner, MPH is a Data Analyst with the Substance Use Research Unit (SURU) at the San Francisco Department of Public Health (SFDPH). Currently, she manages the Substance Use Related Death Surveillance database, conducts substance-related data analysis projects, and supports day-to-day operations of the pharmacological interventions held at SURU. Previously, she analyzed the characteristics of men who have sex with men (MSM) who were high engagers in a novel text messaging data collection platform that gathered daily information about their substance, alcohol, and study medication use. She also researched the psychosocial predictors of engagement in sexual risk behavior among trans*female youth enrolled in the SHINE study at SFDPH. As an aspiring social epidemiologist, her research interests include social determinants of health, substance use research, and the translation of findings to policy action. She received her Master of Public Health degree in Epidemiology/Biostatistics from UC Berkeley. Caitlin was also an honorary SHARP scholar in the summer of 2015 and is eager to bring that perspective to her role as a mentor.

Paul Wesson, PhD completed his PhD in Epidemiology from the University of California, Berkeley. His dissertation research focused on sampling and estimating the size of hidden and hard-to-reach populations. To this end, he applied standard statistical methods and novel Bayesian models to estimate the size of African-American men who have sex with men in San Francisco and to evaluate the completeness of the HIV surveillance system in Alameda County. During his time as a graduate student, Dr. Wesson also provided population size estimation consultation to the CDC in Namibia and Central America. As a TAPS fellow, Dr. Wesson is interested in continuing his research on the health of hidden and marginalized populations, as well as exploring the social determinants of health disparities in the context of infectious diseases. Additionally, he is interested in the application of Bayesian models and causal inference methods to observational study designs.

Erin Wilson, DrPH is a research scientist at the San Francisco Department of Public Health (SFDPH) and an Assistant Professor in the Department of Epidemiology and Biostatistics at the University of California, San Francisco. Dr. Wilson is laser focused on better health and wellness among transwomen and youth. Her research focus for the last two decades has been determining the reasons transwomen and youth are at high risk for HIV, on decreasing HIV risk factors, and increasing access to HIV prevention and care resources for transwomen and youth. Dr. Wilson is an expert in qualitative research, mixed methods studies, social epidemiological research, sampling hidden populations and community-based participatory research. She is currently the Principal Investigator (PI) of a 5-year NIH R01 to longitudinally study HIV risk and resilience among trans youth in the San Francisco Bay Area (, and of an international prospective HIV incidence study of transwomen in four countries (, and of a Demonstration Project to increase PrEP access in the trans community ( She is also the PI for the evaluation of a Special Projects of National Significance to increase engagement and retention in HIV care among transgender women of color and among young gay and transwomen. Dr. Wilson’s international experience has focused on formative research to inform behavioral surveillance studies among key populations at risk for HIV/AIDS in Mozambique, Zambia, and the Ivory Coast, study ART adherence in Kenya and conduct HIV risk studies of transwomen in Brazil and Nepal. Dr. Wilson is committed to the growth of scientists interested in serving trans and other communities impacted by HIV in the US and around the globe, and she looks forward to mentoring the next generation of HIV research scholars.