Jessica Spellun, M.D.

Dr. John Mahlstedt, MD, is an esteemed psychiatrist based in New York, specializing in both adult and child/adolescent psychiatry. He is dedicated to providing comprehensive evaluations, consultations, psychotherapy, and medication management through an evidence-based and individualized approach to patient care. As an Assistant Professor of Clinical Psychiatry at Weill Cornell Medicine and an experienced attending psychiatrist at NewYork-Presbyterian Westchester Behavioral Health Center, Dr. Mahlstedt has received numerous accolades for his clinical excellence, including the Edward J. Sachar Award. His expertise covers a broad range of mental health issues, including depression, anxiety disorders, ADHD, and bipolar disorder. Generated from the website

Dr. Dimitris Kiosses completed his undergraduate degree at Tufts University and received his Ph.D. in Clinical Psychology from the Derner Institute of Advanced Psychological Studies of Adelphi University. He completed his internship at Hillside Hospital-Long Island Jewish Medical Center and has been working at the Weill Cornell Medicine Institute for Geriatric Psychiatry since 1997. Dr. Kiosses is a NY State licensed psychologist and has been trained in Cognitive Therapy at the Beck Institute for Cognitive Therapy and Research. He is certified in Problem Solving Therapy and Supportive Psychotherapy.Dr. Kiosses' research focuses on the development of psychosocial interventions for middle-aged and older adults with depression, suicidal ideation, chronic pain or cognitive impairment. He has developed psychosocial interventions for vulnerable patients, including patients who have been hospitalized for suicidal ideation or suicide attempt, patients with major depression and cognitive impairment, patients with negative emotions and chronic pain, and patients who have been discharged after ECT treatment. His research has been supported by grants from the National Institute of Mental Health, National Institute on Aging, American Foundation for Suicide Prevention, Brain and Research Foundation, and Alzheimer's Association. Dr. Kiosses has developed Problem Adaptation Therapy (PATH), an emotion regulation psychosocial intervention for older adults with depression and cognitive impairment, which aims to reduce depression and disability in this population. PATH focuses on improving the functioning of older adults with cognitive deficits in their actual environment. PATH therapists use environmental adaptation tools (i.e. signs, calendar, notes) to help older adults with cognitive deficits bypass their functional and cognitive limitation and incorporate caregiver or family member involvement, if necessary. PATH was developed as a home-delivered intervention but it can also be administered in the therapist’s office.If you are interested in PATH training and supervision, please contact Ms. Laurie Evans at 914-682-9100 ext 101-2570 or at lad9011@med.cornell.edu.His offices are located in Manhattan and in White Plains.Please call (646) 962-2820 or for more information or to make an appointment.

After completing training in general psychiatry at Montefiore Medical Center, Dr. Matthew Shear completed a fellowship in Child and Adolescent Psychiatry at Mount Sinai Medical Center, where he was Chief Fellow during his final year. Dr. Shear is board certified in both Adult Psychiatry and Child and Adolescent Psychiatry.Dr. Shear teaches Child and Adolescent Psychiatry to Weill Cornell Medical students, and supervises residents and fellows.To schedule appointments: Call 646-962-2820