Ximena Sanchez-Samper, MD

Ximena Sanchez-Samper, MD is a board-certified addiction psychiatrist and Chief Medical Officer at New Horizons Medical, where she provides leadership in advancing high-quality, evidence-based care for patients with substance use disorders and co-occurring behavioral health needs. She earned her medical degree from Pontificia Universidad Javeriana in Bogotá, Colombia and completed her psychiatry residency at the Mayo Clinic in Rochester, Minnesota, followed by a fellowship in addiction psychiatry through a consortium including Massachusetts General Hospital, McLean Hospital, and Brigham and Women’s Hospital.

Dr. Sanchez-Samper has over two decades of experience treating adolescents, young adults, and adults affected by substance use disorders, and has advocated for the integration of medication-assisted treatment (MAT) into comprehensive addiction care. She has authored peer-reviewed publications and a book chapter on adolescent opioid use and has lectured nationally on identification, diagnosis, and treatment of substance use disorders. She also held a part-time instructional appointment at Harvard Medical School.