OHSU Pulmonary & Critical Care Faculty

Jeffrey Gold, MD

Jeff Gold

Interim Chief

Professor of Medicine

After completing fellowship in 2001, Dr. Gold joined the faculty at NYU Medical Center as an assistant professor. During his time at NYU, Dr. Gold received funding from the National Institute of Health to better understand the immunologic mechanisms of sepsis and septic shock. In addition, in 2004, he was named director of critical care service for Bellevue Hospital. He joined the faculty of OHSU in 2005 and was promoted to associate professor in 2009. Clinically, he works in the Medical Intensive Care Unit, the pulmonary consultation service and is associate director of the Adult Cystic Fibrosis Center.

Gopal Allada, MD

Gopal Allada

Clinical Associate Professor of Medicine

Dr. Allada was born and raised in Michigan and attended the University of Michigan for his undergraduate and medical school education. From there, he completed an internal medicine residency at the University of Wisconsin Hospitals and Clinics in Madison, Wisconsin. In 1998, he began his pulmonary and critical care fellowship at OHSU. He has since become board certified in internal medicine, pulmonary medicine, critical care, and sleep medicine. He currently serves as the general pulmonary clinic director, the adult cystic fibrosis director and the medical director of the OHSU Physician Assistant school. In addition, he participates in clinical research trials for promising cystic fibrosis therapies. He serves on the national Cystic Fibrosis center committee and is a board member of the Oregon Chapter of the Cystic Fibrosis Foundation. Clinical profile

Alan Barker, MD

Alan Barker

Professor of Medicine

Dr. Barker received his BA from Carleton College, Minnesota in 1966 and received his MD degree in 1970 from the University of Missouri Medical School. He then completed his residency in Internal Medicine at the University of Washington Affiliated Hospitals and served as Chief Resident from 1973 to 1974. Following this, Dr. Barker was a Pulmonary and Critical Care Medicine Fellow at the University of San Diego from 1974-1976. Faculty profile

Anna Brady, MD

Anna Brady

Assistant Professor of Medicine

Dr. Brady was born in Buffalo, NY and attended Case Western Reserve University in Cleveland, OH for both her undergraduate and medical degrees. She completed residency in internal medicine at the Hospital of the University of Pennsylvania and fellowship at the University of Washington. During fellowship she also participated in the University of Washington's Teaching Scholars Program. Dr. Brady's clinical interests include both pulmonary and critical care medicine. She is very interested in medical education, especially the evidence behind different methods of teaching and learning procedures.

Matthew Drake, MD

Matthew Drake

Assistant Professor of Medicine

Dr. Drake's research focuses on airway neurobiology and innate immunity in asthma, with a particular focus on Toll-like Receptors. Dr. Drake has shown that Toll-like Receptor 7 agonists act as a novel class of bronchodilators via the induction of nitric oxide. He has also shown that airway parasympathetic nerves express Toll-like Receptor 7. His current work focuses on the significance and mechanisms of Toll-like Receptor signaling on airway nerves in models of non-allergic and allergic airway inflammation. Faculty profile

Allison Fryer, PhD

Allison Fryer

Professor of Medicine

Dr. Fryer's research has shown that airway hyperreactivity, that is similar to asthma, is accompanied by recruitment of eosinophil inflammatory cells to airway nerves. These eosinophils are activated and release a preformed protein, eosinophil major basic protein, which binds to and blocks M2 muscarinic receptors on nerves. M2 blockade increases neurotransmitter release and increases bronchoconstriction, similar to asthma. Her lab is examining what mechanisms underlie recruitment and activation of eosinophils at the autonomic nerves in the lungs. They are also working to understand how exposure to viral infection, organophosphate pesticides, ozone, or allergens all induce loss of M2 receptor function in the nerves, and the role of eosinophils in the resulting airway hyperreactivity. More on Dr. Fryer

Stephen Hall, MD

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Professor of Medicine

Dr. Hall interests include pulmonary surfactants and ARDS. He earned his medical degree in 1982 from OHSU, and received his Ph.D. in 1978 from the University of Oregon. He completed his residency at Vanderbilt University in Nashville, and his fellowship at the University of Rochester in Rochester, N.Y. Dr. Hall became board certified in internal medicine in 1985. More on Dr. Hall.

David B. Jacoby, MD

David Jacoby

Chair, Department of Medicine

Edwards Professor of Pulmonary Medicine, faculty profile

Director, MD/PhD Training Program

Vice-Chair for Research, Department of Medicine

Director, OCTRI KL2 Program

Dr. Jacoby was born in New York, and is a graduate of Princeton University and New York Medical College. He was a resident and chief resident in internal medicine at Temple University Hospital and did his fellowship at the Cardiovascular Research Institute at the University of California, San Francisco. He was a member of the Division of Pulmonary and Critical Care Medicine at Johns Hopkins for 13 years, where he was research director for the division. He moved to OHSU to become division chief in 2003.

Akram Khan, MD

Akram Khan

Associate Professor of Medicine

Akram Khan received his medical degree from Maulana Azad Medical College, New Delhi, India in 1994. Following residency training in internal medicine at Saint Louis University School of Medicine in Saint Louis, Missouri in 2000, he did a critical care fellowship at Saint John's Mercy Medical Center (St. Louis University) in Saint Louis Missouri in 2001. He then worked as a director of emergency room and emergency room physician at Saint Alexius Hospital in Saint Louis. He joined a pulmonary fellowship at the University Of Oklahoma College Of Medicine in Oklahoma City in 2004. This was followed by a fellowship in sleep medicine at Mayo Clinic in Rochester, Minnesota in 2006. More on Dr. Khan.

Brenda Marsh, MD, PhD

Brenda Marsh

Assistant Professor of Medicine

Dr. Brenda Marsh is an Assistant Professor and a graduate of OHSU’s MD/PhD program and the Pulmonary and Critical Care Fellowship.  Her research interests include the role of TRPA1 signaling in the airways.

Bart Moulton, MD

Bart Moulton

Associate Professor of Medicine

Dr. Moulton received his MD from the University of Washington in 2005. He went on to complete his residency in 2008 at the University of Colorado Health Sciences Center and his fellowship in 2012 at OHSU. More on Dr. Moulton.

Dane Nichols, MD

Dane Nichols

Dr. Nichols has a long history of excellence in teaching, and has received numerous awards and honors, including the Off-Service Faculty Teaching Award, Outstanding Teaching Award, and the Internal Medicine Residency Program Teaching Award while at the University of Illinois. Specializing in critical care medicine, Dr. Nichols has focused his activities on resident education and the management of ARDS and the management of septic shock. More on Dr. Nichols.

Zhenying (Jane) Nie, MD, PhD

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Research Assistant Professor

Dr. Nie received her MD and PhD from Beijing Medical University, and completed her postdoctoral fellowship at the University of Pennsylvania Medical School. Faculty profile.

Stephanie Nonas, MD

Stephanie Nonas

Associate Professor of Medicine

Dr. Nonas received her MD from Harvard Medical School in 2000. She went on to complete her residency in 2003 at Brigham and Women's Hospital, and her fellowship in 2007 at Johns Hopkins University. The primary focus of her research is to understand the mechanisms of acute lung injury and ARDS, and in particular the role of mechanical stresses in causing or propagating lung injury. Faculty profile.

Jonathan Pak, MD

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Assistant Professor of Medicine

Dr. Pak received his BA from Williams College, and his M.D. from Temple University in 2007. He completed his Residency and Fellowship in Critical Care Medicine at Oregon Health & Science University.

Ran Ran, MD

Ran Ran

Assistant Professor of Medicine

Dr. Ran graduated from McMaster University in Hamilton, Ontario and Washington University in St. Louis School of Medicine. He completed residency in Emergency Medicine and fellowship in Critical Care Medicine at Oregon Health & Science University. Dr. Ran's career interests include improving care to critically ill patients in the ED and ICU, teaching medicine from physiologic principles, and developing free open access medical education.

Virginia Satcher, ANP

Virginia Satcher


Virginia completed her MSN at the University of Portland in 1992. She currently sees patients in the Pulmonary Medicine adult clinic. Clinical profile.

Daniel Seifer, MD

Daniel Seifer

Assistant Professor of Medicine

Dr. Daniel Seifer grew up in the Appalachian Mountains of Tennessee, spent significant time in the USVI (St. Croix), and was fortunate enough to train at three different institutions across two coasts (UNC-Chapel Hill, UCSD, and OHSU). Daniel has particular interests in immunology, physiology, operational efficiency, the integration of technology into clinical practice, and in promoting & practicing a humanistic approach to medicine. Apart from work, he is involved in the community through coaching athletes, social activism, and generally learning as many new things as possible. 

Donald Sullivan, MD

Don Sullivan

Assistant Professor of Medicine

Dr. Sullivan was born and raised in Boston and attended Tufts University for his undergraduate and Boston University for his graduate degrees. He has an interest in international medicine and has participated in medical trips to Africa as well as South America. Dr. Sullivan believes strongly in empowering his patients by providing them with the tools to lead active, healthy lifestyles. His particular clinical interests include pulmonary and critically care medicine. His current research interests include patient-centered outcomes projects, specifically improving lung cancer and critical care outcomes while providing compassionate family support. Dr. Sullivan enjoys teaching future generations of physicians by helping train residents and fellows. In his free time, he enjoys travel, hiking and biking. Clinical profilePublications.

Aaron Trimble, MD

Aaron Trimble

Assistant Professor of Medicine

Aaron Trimble grew up near Anchorage, Alaska before moving to Virginia for college. After finishing medical school and internal medicine residency at the University of Virginia, he moved to Chapel Hill, North Carolina for fellowship in pulmonary and critical care medicine. He developed a particular interest in cystic fibrosis during his clinical years, and completed a research fellowship at UNC studying mucociliary clearance and clinical research in CF. At OHSU, Aaron continues to have a particular interest in CF clinical care, quality improvement, and clinical research. Aaron enjoys cycling, cooking, and spending time with his wife and three young boys.

Kelly Vranas, MD

Kelly Vranas

Assistant Professor of Medicine

Dr. Vranas was born in Eugene, OR, and is a graduate of Santa Clara University and Weill Medical College of Cornell University. She completed residency training in Internal Medicine at the University of Pennsylvania, then went on to complete two years of fellowship training in Pulmonary and Critical Care Medicine at Stanford University before finishing her fellowship at OHSU. Dr. Vranas' research focuses on mechanisms to improve the quality, efficiency, and value of critical care through innovations in the care delivery process. Specifically, Dr. Vranas is investigating the variability in ICU admitting patterns for low-risk patients within the VA healthcare system, with the goal of using this information to generate validated ICU admission standards applicable to patients with different needs and risk profiles. She is also interested in improving end-of-life care for critically ill patients through a better understanding of the association of documented care preferences with inpatient healthcare resource utilization and receipt of care consistent with patients' goals.

Bishoy Zakhary, MD

Bishoy Zakhary

Assistant Professor of Medicine

Dr. Zakhary is a graduate of UBC in Vancouver BC and Creighton Medical School in Omaha NE. After a brief stint as a radiology resident, he subsequently trained in internal medicine and pulmonary - critical care at NYU where he stayed on as an intensivist and medical director of the ECMO program. Currently, Bishoy serves as Chair of Education for ELSO. Career interests include respiratory failure, ECMO, and simulation.

Portland VA HealthCare System Faculty

Kathryn Artis, MD, MPH

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Assistant Professor of Medicine

Dr. Artis obtained her medical degree from Mount Sinai School of Medicine in New York, NY. She came to OHSU in 2007 where she completed internal medicine residency, served as chief resident and hospitalist director, completed pulmonary critical care fellowship and joined as faculty in 2015. Her research interests include optimizing use of the electronic health record (EHR) during inter-professional rounds in the intensive care unit and delivery of care through telemedicine, such as home-based pulmonary rehabilitation for COPD patients.

Mark S. Chesnutt, MD

Mark Chesnutt

Professor of Medicine

Dr. Chesnutt's clinical area of focus at OHSU is heredity hemorrhagic telangiectasia (HHT) and pulmonary arteriovenous fistula. He is director of the OHSU Hereditary Hemorrhagic Telangiectasia Center of Excellence within the Charles T. Dotter Department of Interventional Radiology. He received his MD from OHSU in 1986. He was a resident and chief resident in internal medicine at University of California, San Francisco (UCSF), and completed fellowship training in pulmonary and critical care medicine at UCSF and its Cardiovascular Research Institute. Since 2005 he has served as Director, Critical Care for the VA Portland Health Care System

David B Coultas, MD, FACP

David B Coultas

Associate Chief of Staff-Education

Dr. Coultas, MD received his medical degree from the University of Florida and completed training in internal medicine, pulmonary disease and critical care at the University of New Mexico. He joined VA Portland Health Care System and OHSU in 2014, and he is currently Associate Chief of Staff for Education at VAPORHCS. His research has focused on the epidemiology and prevention of chronic respiratory diseases. His studies have included investigations of patients with interstitial lung diseases, environmental and occupational lung diseases, and chronic obstructive pulmonary disease. His most recent research has focused on providing self-management support for patients with COPD and alternative methods for delivering pulmonary rehabilitation. 

Mark Deffebach, MD

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Associate Professor of Medicine

Dr Deffebach received his MD from OHSU in 1981. 

Melanie Harriff, PhD

Melanie Harriff

Research Assistant Professor

Dr. Harriff received her Ph.D. in Molecular and Cellular Biology in 2007 from Oregon State University in the laboratories of Luiz Bermudez and Michael Kent. Following a year-long postdoctoral research position in the laboratory of Gary Thomas at the Vollum Institute at Oregon Health &Sciences University, Harriff worked as a postdoctoral research fellow in the Department of Pulmonary and Critical Care Medicine at OHSU, in the laboratory of David Lewinsohn. She joined the Research Department at the Portland VA Medical Center as a Research Microbiologist in 2011.

William Holden, MD

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Professor of Medicine

Dr. Holden earned his medical degree at the University of Cincinnati College of Medicine in 1968. He completed both his residency training and fellowship at OHSU in 1974 and 1976, respectively. He is board certified in internal medicine (1974), pulmonary (1980), critical care (1987), advanced achievement in internal medicine (1987) and critical care (1997).

Elly Karamooz, MD

Elly Karamooz

Assistant Professor of Medicine 

Dr. Karamooz received her BA from Reed College in 2004 and her MD from the University Of Illinois College Of Medicine in 2009. She went on to complete her residency in 2012 and her fellowship in 2016, both at OHSU.

Suil Kim, MD, PhD

Suil Kim

Assistant Professor of Medicine

Dr. Kim received a BA and MS from the University of Chicago and an MD and PhD from the University of Michigan. He completed residency training in Internal Medicine at the University of Pittsburgh and a fellowship in Pulmonary and Critical Care Medicine at the University of California San Francisco before joining OHSU in 2011. His major academic activities include basic research on the signaling mechanisms leading to mucous hypersecretion and neutrophilic inflammation in subjects with chronic airway diseases, clinical medicine as an attending physician at the Portland VA Medical Center, and education as VA site coordinator for the OHSU PCCM fellowship program. Publications

David Lewinsohn, MD, PhD

David Lewinsohn

Professor of Medicine

After receiving his B.S. in biology from Haverford College, David Lewinsohn attended Stanford University School of Medicine. In 1989 he received his Ph.D. in cancer biology and received his M.D. the same year. Dr. Lewinsohn was a Fellow of Pulmonary and Critical Care Medicine at the University of Washington, Seattle, WA, from 1993-1996, and a senior fellow and acting instructor from 1996-1998. During 1996-1998 he was also an investigator at the Infectious Disease Research Institute in Seattle, WA.

Miranda Lim, MD, PhD

Lim Miranda Phott

Assistant Professor

Dr. Miranda Lim is a physician-scientist in sleep medicine. She received a Bachelors degree from University of Southern California, a combined MD/PhD degree from Emory University in Atlanta in 2006, and completed a neurology residency at Washington University in Saint Louis in 2010, where she was Chief Resident. There, she studied the role of orexin and the sleep-wake cycle in a mouse model of Alzheimer's disease in Dr. David Holtzman's laboratory (Kang, Lim et al., Science 2009). She continued fellowship training in Sleep Medicine at the University of Pennsylvania, where she studied the mechanisms underlying sleep disturbances in traumatic brain injury (TBI) (Lim et al., Science Translational Medicine 2013). Dr. Lim is currently a Staff Physician at the VA Portland Health Care System and Assistant Professor at Oregon Health and Science University with joint appointments in the departments of Medicine, Neurology, Behavioral Neuroscience, and the Oregon Institute of Occupational Health Sciences. She is the recipient of a VA Career Development Award to perform translational sleep research in both mouse models and Veterans with TBI.

Christian Morales Perez, MD

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Staff Physician

Dr. Perez received his MD from Temple University School of Medicine and completed his fellowship at the University of Pennsylvania Health System.

Lakshmi Mudambi, MD

Lakshmi Mudambi

Assistant Professor of Medicine

Dr. Mudambi was born in New Mexico and is a board-certified Interventional Pulmonologist. She is the Director of Interventional Pulmonology at the Portland VA Health Care System. She received her medical degree from Rajiv Gandhi University of Health Sciences in Bangalore, India. She completed residency training in Internal Medicine at New York Medical College at Westchester Medical Center, fellowship training in Pulmonary and Critical Care at Baylor College of Medicine and fellowship training in Interventional Pulmonology at University of Texas-MD Anderson Cancer Center. Her clinical interests focus on the use of minimally invasive, advanced bronchoscopic and pleural procedures to reduce the impact of diagnosis and treatment of cancer-related thoracic pathology. Her current research interests include improving the quality and efficiency of staging and diagnosis of lung cancer in the VA.

Thomas Prendergast, MD

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Clinical Professor of Medicine

Dr. Thomas Prendergast is a pulmonologist in and is affiliated with Portland Veterans Affairs Medical Center. He received his medical degree from University of California San Francisco School of Medicine. 

Christopher Slatore, MD

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Dr. Slatore is interested in the prevention, detection, treatment, and healthcare delivery for patients with tobacco-related lung diseases, chiefly lung cancer and chronic obstructive pulmonary disease (COPD). His research has focused on improving patient outcomes and identifying innovative approaches to treatment in these areas. He is currently investigating the influence of patient-clinician communication on patient-centered outcomes for patients with and at risk of having lung cancer. Through the application of comparative research methodologies, he hopes to improve healthcare quality for patients with tobacco-related lung diseases. Publications

Stephen M. Smith M.B., B.S., Ph.D.

Stephen Smith, Steve Smith

Professor of Medicine, faculty profile

Director of CCM Fellowship, OHSU

Director of Medical Critical Care, VAPORHCS

Dr. Smith completed his PhD studies and medical degree at the University of Newcastle upon Tyne, UK. He was a postdoctoral fellow at the National Institute for Medical Research, London and the Department of Molecular and Cellular Physiology at Stanford University. He completed postgraduate medical training in medicine and intensive care at Guy's Hospital, London and RPAH and RNSH, Sydney. Dr Smith's major research focus is on neuronal signaling and disease states. Current projects include the characterization of endogenous pathways that strongly modulate voltage-gated sodium channels, the identification of the mechanisms by which external calcium modulates excitability, and the determination of specialized mechanisms at the nerve terminal function. The laboratory is particularly interested in how these mechanisms are modified at times of acute brain injury. He continues this work in his laboratory in the Section of Research and Development, VAPORHCS. He is also interested in ICU-based research and is collaborating on a study to determine if food type affects tolerance and biome in the critically ill. Publications.

Emeritus Faculty