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Dr. Greenwald directs the Substance Addiction Research Division, its Human Pharmacology Laboratory and the outpatient treatment research clinic in the Department of Psychiatry and Behavioral Neurosciences at Wayne State University. He previously directed the Ph.D. training program in Translational Neuroscience at the WSU School of Medicine and currently co-directs the National Institute on Drug Abuse (NIDA) T32-funded "TRAIN@wayne" addiction neuroscience program. The NIH has continuously funded his research since 1996. He has been principal investigator and a co-investigator on many federally funded grants, and regularly reviews manuscripts for many substance abuse related journals and federal grant applications.

Dr. Greenwald also focuses on the pharmacological, environmental, and individual difference determinants of drug-seeking behavior including nicotine. Recent work has focused on the effects of stress on nicotine seeking and brain function (Woodcock et al. 2019a, 2019b), and future work is expected to focus on therapeutic approaches including medications and neuromodulation.
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