Jeffrey P. Kahn MD completed medical school, psychiatry residency and advanced fellowship training at Columbia University, and is now a full Clinical Professor of Psychiatry at Weill Cornell. With Upper West Side and Westchester offices, he offers thoughtful psychotherapy, careful medication, and thorough evaluation. From training, research, writing, teaching and clinical experience, his work in psychotherapy and medication is complemented by expertise in anxiety, depression, psychosis, heart disease and medical illness, work and career issues, behavior in organizations, management and leadership, and psychiatric problems seen from an evolutionary perspective.