He works as an Assistant Psychologist and Senior Research Associate at the MGH/McLean OCD Institute in Belmont, MA, where he also maintains a small private practice. He also holds a faculty appointment at Harvard Medical School and is deeply involved in the clinical training of interns, post-doctoral fellows, and early-career psychologists. As part of Dr. Crowley's practice, he runs treatment groups that are geared towards undermining emotional avoidance, worry, rumination, and perfectionism.