Oregon Prevention Research Center

Who We Are

Thomas M. Becker, MD, PhD
Tel: 503-494-1175
Email: beckert@ohsu.edu

Dr. Becker is a CDC-trained epidemiologist with substantial experience in public health-related research, particularly in special populations. He serves as the Director of the Center for Healthy Communities, Professor and Chairman in the Department of Public Health & Preventive Medicine at OHSU, and an investigator at the Northwest Portland Area Indian Health Board.

By training, Dr. Becker is a medical epidemiologist with interests in both infectious and chronic disease epidemiology, with focused interests in viral carcinogenesis as related to cancers in special populations. He has published extensively on American Indian and Hispanic health issues, and is currently funded to carry out etiologic studies of cervical neoplasia in American Indian and Alaska Native populations. In addition to his training in medicine and public health, Dr. Becker also has a PhD in Anthropology, and his research has been designed to combine his experience in all of these disciplines. At OHSU, he teaches courses in epidemiologic methods and in infectious disease epidemiology.


Associate Director
William Lambert, PhD
Tel: 503-494-9488
Email: lambertw@ohsu.edu

Dr. Lambert is Associate Director for the Center for Healthy Communities and Associate Professor in the Department of Public Health & Preventive Medicine at OHSU. Dr. Lambert has served as an environmental epidemiologist on several large cohort studies, including respiratory disease- and cancer-related investigations in the Southwest and in Mexico. In the Northwest, Dr. Lambert works with the Yakama Nation Fisheries Program to evaluate health risks posed to tribal members who eat fish from the Columbia River system that are contaminated with PCBs, organochlorines, and metals.


Program Manager and Evaluator
Tosha Zaback, MPH

Tel: 503-494-1330
Email: zabackt@ohsu.edu

Tosha Zaback serves as the Program Manager/Evaluator of the Center. In this role she assists Investigators to implement, manage, and evaluate health intervention and professional development projects within tribal communities. She works closely with the Center’s community partner, the Northwest Portland Indian Health Board on program evaluation and capacity building projects. Ms. Zaback has been working in the health care field for over 15 years including clinical care in research and allied health, health care access research, health education, and program management and evaluation. Ms. Zaback earned a Master of Public Health in Health Education/Health Promotion from Portland State University.


Assistant Program Manager

Jessica RB Kennedy, BS
Tel: 503-494-1126
Email: blarjesj@ohsu.edu

Jessica Kennedy graduated from Portland State University with a BS in Public Health Education in 2006. She is a Research Assistant in the Department of Public Health and Preventive Medicine and works closely on the Center for Healthy Communities projects, and serves as the communications and information system contact.


Noise-induced Hearing Loss Prevention Project (NIHLP), PI
William Hal Martin, PhD
Email: martinw@ohsu.edu

Dr. Martin is Professor of Otolaryngology/Head and Neck Surgery and Professor of Public Health & Preventive Medicine at the Oregon Health & Science University in Portland. He directs four programs within the Oregon Hearing Research Center: the OHSU Tinnitus Clinic, Tinnitus Research Program, Intraoperative Neurophysiological Monitoring Services and the Dangerous Decibels® Noise Induced Hearing Loss and Tinnitus Prevention Program. Dr. Martin also serves as the Research Scientist in Residence at the Oregon Museum of Science and Industry.


NIHLP Project, Program Manager
Linda C. Howarth

Tel: 503-494-0670

Email: howarthl@ohsu.edu

Linda has worked for hearing advocacy since 1990.  She started as a public information specialist, then worked as the manager for the University of Washington Virginia Merrill Bloedel Hearing Research Center in Seattle.  Since 2001, Linda has been the program manager of the Dangerous Decibels.


NIHLP Project, Research Assistant

National Community Committee Representative (NCC)

Ga-lo Vann

Tel: 503-494-1126

Email: vann@ohsu.edu

Ga-lo Vann works as an assistant to Linda Howarth helping with Dangerous Decibels and PRC-funded programming for Native tribes. He is an enrolled member of the Western Band of Cherokees in Tahlequah, Oklahoma. In his capacity at OHSU he hopes to develop as many healthy work habits and skills as he can internalize and eventually use them to obtain his Masters of Public Health. With his MPH he hopes to move back to Oklahoma to facilitate and expand public health outreach to his family, friends, and tribe.


The Comparative Effectiveness of Telemedicine to Detect Diabetic Retinopathy (CER Project), PI
Steven Mansberger, MD, MPH
Tel: 503-413-6453
Email: smansberger@deverseye.org

Steven L. Mansberger, M.D., M.P.H. is an Associate Scientist and Director of Ophthalmic Clinical Trials for the Devers Eye Institute in Portland, Oregon. He is also the Director of Glaucoma Services at the Veterans Hospital, and holds appointments at Oregon Health Science University (OHSU) as Adjunct Assistant Professor of Ophthalmology and Clinical Assistant Professor of Public Health and Preventive Medicine.

Dr. Mansberger received his medical degree from Indiana University School of Medicine. He completed an ophthalmology residency at Shiley Eye Center at the University of California, San Diego, and a glaucoma fellowship at Devers Eye Institute. He also earned a Masters in Public Health degree (MPH-Biostatistics/Epidemiology) from OHSU.

Dr. Mansberger has research grant support as principal investigator from the National Eye Institute, Center for Disease Control and Prevention, and the American Glaucoma Society. He has authored over 40 journal articles, book chapters, and abstracts. He has won numerous awards including a Heed Fellowship, The Robert Watske Ophthalmology Instructor of the Year, American Glaucoma Society Clinician-Scientist award, among others. He is on the Editorial Board for Journal of Glaucoma and American Journal of Ophthalmology, and is an invited reviewer for Archives of Ophthalmology, British Journal of Ophthalmology, Ophthalmology, Investigative Ophthalmology and Visual Science, and Survey of Ophthalmology.


CER Project, Research Associate

Christina Sheppler, PhD

Tel: 503-413-6492

Email: csheppler@deverseye.org

As project coordinator of the CER study, Christina assists with the design of experiments, analysis of study data, and serves as a liaison between study site administrators and personnel. In 2009, Christina earned a PhD in Psychology from the University of Oregon, with an emphasis in judgment and decision making.


CER Project, Research Assistant II

Gordon Barker

Tel: 503-413-6088

Email: gbarker@deverseye.org

Gordon Barker is a Research Assistant II at Devers Eye Institute. His background is in psychology, and he recently earned his MS in Experimental Psychology from Western Washington University. He is currently involved in research projects investigating motivational interviewing for glaucoma medication adherence, effectiveness of new injection glaucoma medicine, and diabetic retinopathy screening.


Native Children Always Ride Safe (Native CARS) Project, PI

Jodi Lapidus, PhD

Tel: 503-494-1167

Email: lapidusj@ohsu.edu

Dr. Lapidus is an Associate Professor in the Department of Public Health and Preventive Medicine, Division of Biostatistics and the Center for Healthy Communities at OHSU. She has been a collaborating investigator at the Northwest Portland Area Indian Health Board for several years. One of her primary areas of research interest is maternal and child health. She is currently the Principal Investigator for Native CARS Project, a five year community-based participatory research project funded by National Center on Minority Health and Health Disparities.