Dr. Ahern received his medical degree from Tufts University School of Medicine prior to completing his psychiatric training at New York-Presbyterian Hospital / Weill Cornell Medical Center. He completed subspecialty training in forensic psychiatry at the University of Colorado Anschutz School of Medicine.

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Dr. Ahern treats adults with a wide range of psychiatric concerns, including anxiety, trauma-related disorders, mood disorders, psychotic disorders, substance use, obsessive-compulsive-related disorders, and personality-related dysfunction. In addition, he treats a spectrum of psychological concerns including relationship difficulties, life transitions, personal fulfillment, and identity exploration.