Our Faculty

More than 150 faculty members work within the OHSU-PSU School of Public Health. They have a wide range of expertise, from monitoring and assessing health risks and opportunities in populations, to helping build health-supporting social environments through policy, advocacy, and programs. They are educators, advisors, researchers, practitioners and community leaders. They come from backgrounds in quantitative, behavioral, environmental and social sciences, policy and government, exercise and health sciences and anthropology, among many other areas. They all work in collaboration with each other and with community partners, and are especially focused on the training and education of future leaders and practitioners in the public health fields.



  • The results are being filtered by the department: Epidemiology and Medicine


Becker, Thomas - MA, MD, PhD

Photo of Thomas Becker MA, MD, PhD
Professor Epidemiology and Medicine Office OHSU – CSB 650 Phone: (503) 494-1175

Thomas Becker is a medical epidemiologist who has focused most of his career on minority health and improvement of health status of specific minority populations, including American Indians and Hispanics. Trained in internal medicine, anthropology, and public health, he began his career at the University of New Mexico before moving to the Northwest about 20 years ago.

Since his arrival in Portland, Becker has collaborated closely with the Northwest Portland Area Indian Health Board. He has published on a diverse range of American Indian health issues, including both infectious and chronic diseases. And with the Indian Health Board, he has been involved in etiologic studies, community prevention programs and education programs to improve career opportunities for people in tribes nationwide.

Education, Degrees

B.A., Ohio University, 1972
M.A., Anthropology, University of New Mexico, 1976
M.D., Case Western Reserve University, 1977
CDC EIS Program, 1985
Ph.D., Anthropology, University of New Mexico, 1986


Cary, Margaret - MD, MPH

Photo of Margaret Cary MD, MPH
Assistant Professor Epidemiology and Medicine Office OHSU –DCH 7158 Phone: (503) 418-1085
Education, Degrees

M.D., M.P.H., OHSU, 2006
Psychiatry Residency, University of Washington, 2010
Child and Adolescent Psychiatry Fellowship, University of Washington, 2011


Lowe, Robert - MD, MPH

Photo of Robert Lowe MD, MPH
Professor Epidemiology and Medicine Office OHSU – BICC 411 Phone: (503) 494-7134

Robert A. Lowe is a professor in the School of Public Health, the OHSU Department of Medical Informatics and Clinical Epidemiology and the OHSU Department of Emergency Medicine. He is also the founder of the OHSU Center for Policy and Research in Emergency Medicine.

Lowe has performed extensive health services and epidemiologic research. His major research focus is access to care for vulnerable populations, with a particular focus on the role of emergency departments  in access to care and on the relationship between access to primary care and use of emergency departments. For example, he has studied enrollees in a Medicaid managed care organization, examining the associations between characteristics of their primary care providers and the enrollees’ rates of emergency department use. He demonstrated a large rise in emergency department use by uninsured Oregonians after cutbacks in the Oregon Health Plan.

Education, Degrees

B.A., Sociology, University of California, Santa Cruz, 1972
M.D., University of California, Davis, 1977
M.P.H. in Epidemiology, University of California, Berkeley, 1991
Residency in Internal Medicine, University of Michigan, 1977-1980
Residency in Emergency Medicine, University of Cinciannti, 1982-1984
Postdoctoral Scholar, University of California, San Francisco, Prevention Sciences Group, 1991-1993

  • Title: Oregon Multidisciplinary Training Program for Emergency Medicine Clinical Research (1K12HL108974) Source:National Heart, Lung and Blood Institute PI: Lowe (transitioned to Newgard, July 2013) Amount: $3,800,625 Period:July 2011 – June 2016 % Effort: 30% (reduced after I handed leadership of the project to Craig Newgard)
  • Title:Building an Evidence Base for Treating the Vulnerable: A Community Partnership Source:National Institute on Drug Abuse (1RC4DA029988) PI:Lowe Amount:$400,000, Period:September 2010 – September 2013 % Effort:initially 15%; varied over award period
  • Title: Brain Research/Acute Interventions: Neurological Emergencies Treatment Trials Source: National Institute of Neurological Disorders and Stroke (5U10NS058940) PI: Lowe,  Amount:$1,401,750, Period: October 2007 – August 2012 % Effort: initially 25%; varied over award period
  • Title: Brain Research/Acute Interventions: Neurological Emergencies Treatment Trials Source: National Institute of Neurological Disorders and Stroke  PI: Warden Amount: $1,401,750 Period: September 2012 – August 2017 % Effort: 10% Role: Co-Investigator
  • Title:Does Primary Care Access Decrease Respiratory ED Visits? Source: Agency for Health Care Research and Quality (R01) PI:Lowe, Amount:$1,013,988 Period: June 1998 – May 2002 % Effort: varied, 26-35%
  • Title: Utilization of Emergency Departments for Oral Disease Source: Oregon Oral Health Funders Coalition PI: Benjamin Sun Amount: $87,151 Period:March 2013 – August 2013 % Effort: 5% Role: Co-investigator


  • Title: Institutional Research Training Grant Source: Society for Academic Emergency Medicine PI:Lowe, Amount:$150,000 Period:July 2005 – June 2007 % Effort:7.5%
  • Title: Impacts of Benefit Reduction and Increased Cost Sharing in a Medicaid Program Source: Robert Wood Johnson Foundation Changes in Healthcare Financing and Organization Initiative PI: Lowe (Principal Investigator of f emergency department project, via subcontract from the Office for Oregon Health Policy and Research; Jeanene Smith, overall PI) Amount: $194,871 Period:June 2004 – May 2006 % Effort: varied, 20-30%


Sells, Wayne - MD

Photo of Wayne Sells MD
Professor Epidemiology and Medicine Office OHSU – CDRC-P Phone: (503) 494-3236

Wayne Sells is a pediatrician who specializes in adolescent health. He enjoys working with youth and their families. His areas of expertise in clinical care for adolescents and young adults include: primary care, eating disorders, chronic illness and homeless youth. Sells is active in medical student and resident education. He also works with homeless youth and adults, as well as school-based health care, through Outside In, a Portland nonprofit that helps homeless youth and other marginalized people move towards improved health and self-sufficiency. 

Education, Degrees

M.D., Medical College of Wisconsin, 1988
Pediatric Residency, Stanford University, 1988-1991
Pedicatric Chief Resident, Stanford University, 1992
Fellowship, Adolescent Health, University of Minnesota, 1992-1994

  • Lewy, C., Gilhooly, J., Sells, W., McKelvey R,: Adolescent Depression: Evaluating Pediatric Residents’ Knowledge, Confidence and Interpersonal Skills Using  Standardized Patients, Academic Psychiatry, 33:5, September-October 2009
  • Geenen, S., Powers, L., Sells, W.,: Understanding the Role of Primary Care Providers in Transition Issues for Adolescents with Disabilities and Special Health Care Needs.  J Adolesc Health. 2003;32:225-233
  • Emmons, S, Sells, CW, Eiff, P: A review of medical and allied health learners’ satisfaction with their training in women’s health.  Am J Obstet Gynecol. 2002 Jun;186(6):1259-65; discussion 1265-7.
  • Tsu, RC, Burm, ML, Gilhooly JA, Sells, CW:  Telephone vs. face-to-face notification of HIV results in high-risk youth.  J Adolesc Health. 2002 Mar;30(3):154-60.
  • Gilhooly, J., Simon, E, Tsu, R., Sells, W:  A Look at the Health of Oregon’s Adolescents in the Adult Correctional System. Journal of Correctional Health.  2001 Spring; 8(1): 55-65.
  • Sells, C.W., Blum, R.W.:  Morbidity and Mortality Among US Adolescents:  An Overview of Data and Trends.  Am J Public Health.  1996; 86:513-519.


Zaman, Atif - MD, MPH

Photo of Atif Zaman MD, MPH
Professor Epidemiology and Medicine Office OHSU – OP30 Phone: (503) 494-8071

Atif Zaman  is the section chief and a professor of medicine in the Division of Gastroenterology and Hepatology at OHSU and is a professor in the Department of Public Health and Preventive Medicine at OHSU. He is also a vice chair of the Department of Medicine at OHSU.

Zaman’s current research includes linkages to care of persons who are chronically infected with hepatitis C, especially among vulnerable populations such as homeless people and people who inject drugs.

Aaman is a member of several national societies, including the American Gastroenterological Association, the American College of Physicians and the American Association for the Study of Liver Diseases.

Education, Degrees

B.S., Boston University, 1987
M.D., Tufts University, 1991
M.P.H., Oregon Health & Science University, 2000

Awards and Honors

2000, Outstanding Investigator Award, Western Section – American Federation for Medical Research 

  • NIH RO1 DK 58369-01 Site Principal Investigator: Atif Zaman 1/02-12/09
  • Cooperative agreement U50/CCU011184 funded by CDC/NCID  Principal Investigator: Atif Zaman
  • Sponsor: DHHS HRSA HIV/AIDS Bureau 1 P06 HA16539 01-00  Hepatology Consultant: Atif Zaman  (PI:Todd Korthius)

Meet our Faculty

David Bangsberg

Founding Dean

Dr. Ryan Petteway – A People’s Social Epidemiologist

Assistant Professor
Office: PSU – URBN 470N