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Adult Inpatient Services

Adult Inpatient Services

Program Leadership

Community Reintegration Unit

Danielle Dahle, MDDanielle Dahle, MD, Medical Director

Dr. Dahle is an inpatient psychiatrist specializing in the care of adults with chronic and severe mental illnesses. In addition to providing administrative oversight, clinical care, and teaching, she also volunteers to lead a medical team on a yearly medical mission trip to Port-au-Prince, Haiti, and has interests in global health challenges, including global mental health challenges.

Karen Slifka, RN, MS, CSKaren Slifka, RN, MS, CS, Nurse Director

Ms. Slifka began her career at McLean in the child inpatient units and later moved into the child outpatient program in therapy, medication management, and research. She has been working in the Community Reintegration Unit since 2004 and has continued her research regarding metabolic syndrome in the inpatient program.

McLean SouthEast Adult Psychiatric Inpatient Program

Mark Longsjo, LICSW

Mark Longsjo, LICSW, Program Director

Mr. Longsjo oversees the adult inpatient and partial hospital programs at McLean SouthEast (MSE). He joined McLean Hospital in 1999 when MSE was established and has led the program’s growth over the years to serve more patients with enhanced services over a wider geographic area. He is a recipient of McLean’s Vision of Excellence Award and the Partners in Excellence Award and has been a member of the President’s Cabinet, the hospital’s leadership group.

Jeffrey D. Rediger, MD, MDivJeffrey D. Rediger, MD, MDiv, Medical Director

Dr. Rediger has served as medical director for MSE since 2004. He is also an instructor in psychiatry at Harvard Medical School. He has a Master of Divinity degree from Princeton Theological Seminary and publishes in the fields of medicine, psychiatry, and spirituality. His work has been featured on the Oprah and Dr. Oz television shows, among others.

Darlyn M. Scott, MSN, RN-BCDarlyn M. Scott, MSN, RN-BC, Nurse Director

Ms. Scott has been the nurse director of MSE’s Adult Psychiatric Program since 2011, overseeing a comprehensive inpatient nursing department. She previously worked for the Massachusetts Department of Mental Health in supervisory roles, including nurse manager at Lemuel Shattuck Hospital and nurse manager in the geriatric psychiatric unit at MetroWest Medical Center.

Duncan C. MacCourt, JD, MDDuncan C. MacCourt, JD, MD, Associate Medical Director

Dr. MacCourt currently serves as the attending psychiatrist for the adult partial hospital program at MSE and is an instructor in psychiatry at Harvard Medical School. Fellowship trained in cancer psychiatry, he publishes in the fields of medicine, psychiatry, and law. He teaches in the Harvard South Shore residency program and at Harvard Law School, where he is a lecturer.

Simona Sava, MD, PhD


Simona Sava, MD, PhD, Assistant Medical Director

Dr. Sava is a board-certified psychiatrist specializing in the treatment of adult mood, anxiety, and psychotic disorders. Her clinical interests include the neurobiology of mental illness, medication management, quality improvement, cross-cultural psychiatry, collaborative care, and medical education. In her clinical practice, she uses a multifaceted approach that integrates biological, psychological, social, and cultural aspects to provide comprehensive, patient-centered care.

Schizophrenia and Bipolar Disorder Inpatient Program

Stephanie C. Valcourt, MD

Stephanie C. Valcourt, MD, Medical Director

Dr. Valcourt is an instructor in psychiatry at Harvard Medical School. With a medical degree from Georgetown University School of Medicine, she completed her psychiatry residency training at MGH/McLean. Dr. Valcourt actively participates in the training of psychiatry residents and medical students. Her clinical and research interests have focused on minimizing potential side effects of antipsychotic medications.

Jeanne McElhinney, MS, RN, BCJeanne McElhinney, MS, RN, BC, Nurse Director

Ms. McElhinney began her career at McLean Hospital in 1986, and her passion for nursing continues to this day. Her leadership and professionalism has garnered her numerous awards and recognition. She is dedicated to providing the highest quality of care to patients and a supportive work environment for the staff.

Short Term Unit

Steven Gelda, MDSteven E. Gelda, MD, Medical Director

Dr. Gelda’s clinical interests and expertise center on stabilizing patients who are in crisis due to environmental and interpersonal factors as well as those experiencing an episode of major mental illness. He focuses on interventions including medication management, TMS, and ECT, as well as those involving the social systems in which patients are embedded such as family, work, and health care systems.

Fernando Rodriguez-Villa, MD


Fernando Rodriguez-Villa, MD, Medical Director, Short Term Unit, North

Dr. Rodriguez-Villa’s main areas of clinical interest include mood disorders, suicide, college mental health, medical education, stigma reduction, and cross-cultural psychiatry. He serves on the Patient Family Advisory Committee and is co-chair of the Stigma Committee at McLean Hospital and is an assistant professor of psychiatry at Harvard Medical School.

Ann Rapoport, MSN, RN, PCNSAnn Rapoport, MSN, RN, PCNS, Nurse Director

Ms. Rapoport specializes in the nursing care of adults and older adults, especially those with mood disorders, and in nursing management of acute inpatient units. Since joining McLean in 1981, Ms. Rapoport has served as nurse director of various programs, including the Older Adult Program, and was previously nursing supervisor for the hospital from 1985 to 1996.

Agustin G. Yip, MD, PhDAgustin G. Yip, MD, PhD, Associate Medical Director

Dr. Yip is also a staff psychiatrist for McLean OnTrackTM and the Clinical Evaluation Center (CEC). His research interests include the optimal design, conduct, analysis, and cumulative synthesis of comparative effectiveness studies of neuromodulation in psychiatry.

Staff and Associates

Working in close partnership with patients and families, our clinicians provide high-quality care tailored to each individual’s needs. Our multidisciplinary teams include board-certified psychiatrists, licensed psychologists and clinical social workers, registered nurses, expressive therapists, and mental health specialists.

Each member of our highly trained teams has an extensive background in treating adults with psychiatric illness and experience working with patients from diverse cultural and socioeconomic backgrounds from across the country and around the world.