Addiction medicine at OHSU

Experts focused on solutions to nation’s opioid epidemic
Naloxone helps treat overdose in emergencies
Boxes of Naloxone sit on a shelf inside the OHSU pharmacy in Portland on Thursday, Aug. 18, 2022. Naloxone is a medication that can treat narcotic overdose in an emergency situation. It is available at any OHSU pharmacy without a prescription. (OHSU/Christine Torres Hicks)

The nation’s opioid epidemic has reached crisis proportions. For the calendar year ending in April 2021, drug overdoses claimed more than 100,000 lives in the United States – far exceeding the annual death toll during the height of the AIDS epidemic in the 1980s. At a rate of more than 100 overdose deaths every day, the crisis is prompting society to reconsider how we address substance use disorder. Addiction is now recognized as a medical condition affecting the wider community rather than a moral failing limited to individuals.

Addiction medicine didn’t even exist as a recognized specialty until a decade ago. Today, OHSU clinicians and researchers are at the forefront of the field.

OHSU now provides addiction intervention for patients hospitalized with infections and other acute medical conditions caused by their underlying substance use disorder. This innovation has become a national model. At the same time, OHSU addiction medicine specialists are working with health care professionals and community leaders to improve addiction care in communities throughout Oregon affected by the opioid epidemic.

The OHSU Addiction Medicine Program also provides direct training to community providers and to providers receiving medical training at OHSU, including the OHSU Addiction Medicine specialty training fellowship.

This work is beginning to make a difference. Although opioid addiction continues to harm local communities, the U.S. Centers for Disease Control and Prevention reported that Oregon experienced the largest rate of decrease in prescription opioid deaths nationwide, from 2015 to 2016.

See below for a list of some of the OHSU experts in addiction medicine.

Addiction medicine experts

Christopher Blazes, M.D., stands near greenery outside the OHSU VA Hospital in Portland.
Christopher Blazes, M.D.

Christopher Blazes, M.D., assistant professor of psychiatry and emergency medicine in the OHSU School of Medicine, and a staff physician in the VA Portland Health Care System.

Blazes is triple board-certified in psychiatry, addiction psychiatry and emergency medicine. He directs the OHSU addiction psychiatry fellowship. A clinician-educator, Blazes lectures widely and has published research on benzodiazepines, synthetic fentanyl analogues, buprenorphine and the neurobiology of addiction and recovery.


headshot of Bradley Buchheit, M.D., a smiling white man with a flattop haircut
Bradley Buchheit, M.D.

Bradley Buchheit, M.D., assistant professor of family medicine in the OHSU School of Medicine.

Buchheit is triple board-certified in addiction medicine, family medicine, and public health and general preventative medicine. He is medical director of an OHSU low-barrier, walk-in clinic that focuses on providing medication for treatment of substance use disorder known as Harm Reduction and Bridges to Care, or HRBR (pronounced “harbor”), which opened in the fall of 2019. He is also the program director for the OHSU Addiction Medicine FellowshipBuchheit educates primary care physicians, nurses, social workers, students and other health care workers on low-barrier access to addiction treatment, hospital-based addiction treatment, harm reduction and overdose prevention.


Brian Chan, M.D., M.P.H., stands outside of OHSU Hospital on a sunny summer day.
Brian Chan, M.D., M.P.H. (OHSU)

Brian Chan, M.D., M.P.H., assistant professor of medicine (general internal medicine and geriatrics) in the OHSU School of Medicine.

Chan designs and evaluates health service interventions to improve care for medically and socially complex patients with a focus on improving addictions treatment in primary care settings. He has conducted systematic reviews of treatments and medications for opioid use disorder and stimulant use disorders including methamphetamine and cocaine. He also works as a primary care physician through an OHSU collaboration at Central City Concern in Portland, to meet the health needs of people who are homeless or recovering from addiction.


Honora Englander, M.D.
Honora Englander, M.D.

Honora Englander, M.D., professor of hospital medicine in the OHSU School of Medicine and an addiction medicine specialist.

Englander’s research focuses on transforming health care, specifically hospital-to-home transitions, for vulnerable adults, including those with substance use disorder. She is also principal investigator and director of Project IMPACT, which brings together physicians, social workers, peer-recovery mentors and community addiction providers to tackle the root causes of opioid addiction when patients are admitted to the hospital.


Todd Korthuis, M.D., M.P.H. (OHSU)
Todd Korthuis, M.D., M.P.H. (OHSU)

Todd Korthuis, M.D., M.P.H., professor of medicine (general internal medicine and geriatrics) in the OHSU School of Medicine, and an addiction specialist.

Korthuis serves as head of the Addiction Medicine Section at OHSU. He has practiced addiction medicine since 2004, and his research integrates addiction treatment and prevention in diverse health care settings. He serves as co-principal investigator of the National Drug Abuse Treatment Clinical Trials Network Western States Node that tests new treatment strategies for opioid, methamphetamine, and cocaine use disorders. He has served as principal investigator for multiple National Institutes of Health-funded research studies. See Todd Korthuis' OHSU media expert page.


Travis Lovejoy, Ph.D., M.P.H.
Travis Lovejoy, Ph.D., M.P.H.

Travis Lovejoy, Ph.D., M.P.H., associate professor of psychiatry and public health and preventive medicine in the OHSU School of Medicine, and a pain psychologist in the VA Portland Health Care System.

Lovejoy studies clinical and health systems outcomes when patients discontinue long-term opioid therapy. He is principal investigator of a VA study that examines patient experiences with the opioid taper and discontinuation process, as well as a study that examines the effectiveness of collaborative care approaches to managing pain in patients with substance use disorders.


Dennis McCarty Ph.D. (2016)
Dennis McCarty, Ph.D.

Dennis McCarty, Ph.D., professor emeritus of public health and preventive medicine in the OHSU School of Medicine and the OHSU-Portland State University School of Public Health.

McCarty’s research focuses on strategies to treat alcohol and substance use disorders, specializing in policy solutions.



Benjamin Morasco, Ph.D., near a gray background.
Benjamin Morasco, Ph.D. (OHSU)

Benjamin Morasco, Ph.D., professor of psychiatry in the OHSU School of Medicine and staff psychologist at the VA Portland Health Care System.

Morasco conducts clinical research on issues related to chronic pain, with interests in improving pain treatment outcomes in patients with co-occurring mental health and substance use disorders. He is currently funded by grants from the NIH, the U.S. Department of Veterans Affairs, and the Patient-Centered Outcomes Research Institute to conduct clinical and observational trials designed to improve pain treatment outcomes and reduce adverse effects related to prescription opioids.


Andy Seaman M.D. (2018)
Andrew Seaman, M.D.

Andrew Seaman, M.D., assistant professor of medicine (general internal medicine and geriatrics) in the OHSU School of Medicine and an addiction medicine specialist.

Seaman also works through an OHSU partnership with Central City Concern to meet the medical needs of people who are homeless or recovering from addiction. His research explores the intersections of addiction and hepatitis C, as well as opioid use disorder among incarcerated populations.


Headshot of Chris Stauffer, M.D., a smiling man with short hair and a beard in front of greenery
Chris Stauffer, M.D.

Chris Stauffer, M.D., assistant professor of psychiatry in the OHSU School of Medicine, and a physician-scientist at VA Portland Health Care System.

Stauffer is board-certified in psychiatry and addiction medicine. His research involves combining individual and group psychotherapy with psychedelic medicines, such as psilocybin and MDMA, for the treatment of substance use disorders and post-traumatic stress syndrome. Current and upcoming projects include MDMA-assisted group therapy for veterans with PTSD and psilocybin-assisted therapy for methamphetamine use disorder.


Elizabeth Needham Waddell, Ph.D. stands at Portland State University.
Elizabeth Needham Waddell, Ph.D. (OHSU)

Elizabeth Needham Waddell, M.A., Ph.D., associate professor of public health in the OHSU-Portland State University School of Public Health and OHSU School of Medicine.

Waddell is a public health researcher who works closely with Oregon state agencies on multiple initiatives to improve health systems integration and to better understand the treatment needs of adults cycling through jail and prison. She is principal investigator on the U.S. Centers of Disease Control and Prevention pilot, “Reducing Risk of Overdose after Release from Incarceration,” which combined medications for addiction treatment with support from certified recovery mentors for women exiting Oregon prison. Nationally, she is one of six principle investigators on a 5-year clinical trial comparing extended-release buprenorphine vs. extended-release naltrexone. The project, Exit-CJS, is funded by the National Institute on Drug Abuse to assesses retention on treatment for opioid use disorder among criminal justice system-involved adults.