Mark L. Ruffalo, D.Psa., L.C.S.W., is a psychoanalytic psychotherapist in Tampa. He has a solo private practice and is an instructor of medical education (psychiatry) at the University of Central Florida. He also serves as an adjunct instructor of social work at the University of South Florida and a voluntary associate professor in the psychiatry residency program at Centerstone. He is on staff at Brandon Regional Hospital.

Born and raised in the northeastern U.S., Mark completed his academic and clinical training at the University of Pittsburgh and its affiliated hospital system. As an intern and staff psychotherapist at Western Psychiatric Institute and Clinic—one of the largest and most renowned university-affiliated psychiatric hospitals in the country—Mark had the opportunity to work alongside some of the leading figures in the field of psychiatry, including authorities tasked with the revision of the psychiatric diagnostic system. He completed postgraduate training at the Chicago Institute for Psychoanalysis and subsequently earned a Doctor of Psychoanalytic Studies (D.Psa.) degree from the Parkmore Institute. He maintained a private practice of psychotherapy in the small coastal town of New Bern, NC, and served on staff at CarolinaEast Medical Center before moving to Florida to join the University of South Florida and establish his current private office in Tampa.

At present, Mark maintains a balance between his clinical and academic work which consists of the teaching and supervision of psychiatry and social work trainees, emergency psychiatry, and the private practice of psychotherapy. An associate member of the American Psychoanalytic Association, he has served as Membership Chair of the Academy for the Psychoanalytic Arts and is the Florida Area Representative and Membership Liaison for the American Association for Psychoanalysis in Clinical Social Work. 
His interests include psychoanalytic theory and psychotherapy, the conceptualization of mental illness, and the history of psychiatry. He is a contributor to the website of Psychology Today and has appeared live on MSNBC.

In addition to his professional work, Mark has long maintained an interest in thoroughbred horse racing and became co-owner of his first racehorse in 2020. His family owned and operated Ruff Acres Farm in Colts Neck, New Jersey, which produced multiple graded stakes winners around the country from the 1950s to the 1980s. He is proud to carry on the Ruffalo family tradition of owning and caring for these beautiful equine animals.