I’m Mark Leone, LICSW, OSW-C, a therapist with a deep commitment to supporting people through some of life’s most complex and emotionally demanding experiences.

My work focuses on individuals and families navigating cancer — including patients, caregivers, and loved ones — as well as healthcare professionals who carry the emotional weight of caring for others every day. I completed my Master of Social Work at Simmons College in Boston in 2015 and received extensive clinical training and experience within Massachusetts General Hospital (MGH) and Beth Israel Lahey Health (BILH).

From 2015 to 2021 at MGH I worked with the genitourinary oncology team, as well as with the leukemia and bone marrow transplant teams. From 2021 to 2026 at the Lahey Hospital and Medical Center, I gained general oncology experience providing services to patients with all malignancies. These settings shaped my clinical foundation and deepened my understanding of the emotional realities of serious illness and healthcare work.

I believe that healing is not about “fixing” what’s broken, but about creating space to feel, reflect, and reconnect — to yourself, to what matters, and to a sense of meaning. In therapy, I strive to offer a calm, compassionate presence where you can speak openly and honestly, without judgment or pressure to have it all figured out.

My approach is collaborative and individualized. I integrate emotional support with practical coping strategies to help clients navigate anxiety, burnout, grief, role changes, and the existential questions that often arise during illness or chronic stress. For healthcare professionals, I offer a space that acknowledges the unique culture, ethical challenges, and emotional toll of working in healthcare — a place where you can show up as a human being, not just a provider or employee of the healthcare system.

Above all, I believe no one should have to walk these journeys alone. Whether you’re coping with a diagnosis, supporting someone you love, or feeling depleted by the demands of caregiving or clinical work, therapy can be a place to regain balance, clarity, and a sense of steadiness moving forward.