Dr. Luis Marchany Alfonso is a board-certified adult psychiatrist with extensive clinical experience across outpatient psychiatric care, inpatient and partial hospitalization leadership, and telepsychiatry. He holds active, unrestricted medical licenses across multiple jurisdictions, including Colorado, New York, California, Maryland, Washington State, Florida, and Puerto Rico.

Dr. Marchany Alfonso began his medical training at the Universidad Autónoma de Guadalajara, which he attended from 1998 to 2002. He earned his Doctor of Medicine degree from the Universidad Central del Caribe School of Medicine in Puerto Rico in 2004. He then completed a PGY-1 residency in Internal Medicine at the University of Southern California Keck School of Medicine from 2004 to 2005. Later that year, he gained acute care experience serving as an emergency room physician under the directorship of Dr. Carlos Pezzoli and Dr. Jorge Rivera. Dr. Marchany Alfonso subsequently pursued specialized postgraduate psychiatric training, completing his adult psychiatry residency at New York Medical College / Westchester Medical Center between 2006 and 2009. During his residency, he also served as Medical Director overseeing the partial hospital inpatient psychiatric unit and outpatient services from 2007 to 2009.

Following his residency, Dr. Marchany Alfonso served as an outpatient psychiatrist at APS Health Care OPD in 2009 and Hospital Menonita CIMA from 2010 to 2011. Drawing on his clinical foundation, he established his long-standing private practice, Mi Mente Sana, in July 2009, where he delivers comprehensive outpatient psychiatric care through its Juncos office. In January 2020, he expanded his clinical footprint by joining New Psych Experts, providing adult general psychiatric evaluations, medication management, and ongoing psychiatric treatment.

A diplomate of the American Board of Psychiatry and Neurology (ABPN), Dr. Marchany Alfonso centers his practice on general adult psychiatry, outpatient treatment, and telepsychiatry, alongside serving in psychiatric supervisory and medical director roles.