Multidisciplinary Team

Director, Partial Hospital Program and Adult Outpatient Psychiatry

Mark Zimmerman, MD received his medical degree from Chicago Medical School. He completed his postgraduate training at the Medical College of Pennsylvania.

Dr. Zimmerman is board certified in psychiatry and is professor of psychiatry and human behavior at The Warren Alpert Medical School of Brown University. 

He is principal investigator of the Rhode Island Methods to Improve Diagnostic Assessment and Services (MIDAS) project. Dr. Zimmerman is the author of more than 300 articles and serves on the editorial board of 10 journals.

He is the author of the recently revised Interview Guide for Evaluating DSM-5 Psychiatric Disorders and the Mental Status Examination, a leading textbook for psychiatric diagnosis and assessment. 

Director, Adult Inpatient Psychiatry, Rhode Island Hospital

Arnaldo A. Berges, MD, is a psychiatrist and director of the division of adult inpatient psychiatry at Rhode Island Hospital. He is a clinical assistant professor of psychiatry and human behavior at The Warren Alpert Medical School of Brown University. He has worked on Lifespan’s transition to LifeChart and its implementation in behavioral health. 

Dr. Berges’ research interests include mood stabilization and maintenance of seizure control, delirium and dementia, chronic schizophrenia and severe Parkinsonism. His work on these subjects has been published in peer-reviewed journals. He is a member of the American Psychiatric Association, the Association of Gay and Lesbian Psychiatrists, and the Rhode Island Psychiatric Society.

Clinical Psychologist

 
Kristy Dalrymple, PhD, is a licensed clinical psychologist, associate director of the outpatient psychiatry practice at Rhode Island Hospital, and director of adult psychology at Rhode Island and The Miriam hospitals.

Dr. Dalrymple received her doctorate from Drexel University.  She completed her residency in psychology at the State University of New York Upstate Medical School and her fellowship in clinical research at the Alpert Medical School.

She is an assistant professor (research) in the Alpert Medical School department of psychiatry and human behavior. She is a member of the Association for Behavioral and Cognitive Therapies and the Association for Contextual Behavioral Science, and serves as an associate editor for the Journal of Contextual Behavioral Science.  
 

Catherine D’Avanzato, PhD received her doctorate in clinical psychology from the University of Miami. She completed her residency in clinical psychology, as well as a clinical research fellowship, at The Warren Alpert Medical School of Brown University. Dr. D’Avanzato is a member of the Association for Behavioral and Cognitive Therapies, the Association for Contextual Behavioral Science, and the Anxiety Disorders Association of America.

She is the author of scientific publications on the etiology, assessment and treatment of depression and related anxiety disorders.

Psychologist

Kristin C. Davidoff, PhD, is a psychologist with Lifespan Physician Group and a member of the care team for Rhode Island Hospital’s Adult Partial Hospital Program. She completed her postdoctoral fellowship in clinical psychology, with an emphasis on severe mental illness at the Providence VA Medical Center, through The Warren Alpert Medical School of Brown University.

Dr. Davidoff's research interests include the impacts of microaggressions on marginalized populations and mental health stigma.

Adriana Hyams, PhD, is a psychologist at the Adult Partial Program at Rhode Island Hospital and the Family Therapy program. She earned her doctorate in clinical psychology with a concentration in geropsychology at the University of Alabama. Her predoctoral training was completed at VA Palo Alto Health Care System in the geropsychology track, and her postdoctoral fellowship was completed at the Providence VA Medical Center and Brown University.

Her clinical interests include hearing loss, tinnitus, palliative care, and general mental health.  She has authored peer-reviewed publications on hearing loss and quality of life issues; psychotherapy with older adults; racial, ethnic, and cultural diversity; and bipolar disorder among older adults.

Sarah McCutcheon, MA
Acute Care Psychotherapist

Sarah McCutcheon, MA, is an acute care psychotherapist at the Rhode Island Hospital Partial Hospital Program.

She received her master of arts degree in counseling psychology from William James College (formerly the Massachusetts School of Professional Psychology) in Newton, Massachusetts.

Savannah McSheffrey, PhD, is a staff psychologist at the Rhode Island Hospital Partial Hospital Program and a clinical assistant professor of psychiatry and human behavior at The Warren Alpert Medical School of Brown University. She received her doctorate from the University of Rhode Island. Her predoctoral and postdoctoral training were both completed at Boston VA Healthcare System with an emphasis in treating PTSD and women’s stress disorders. Her clinical interests include working with underserved populations, veterans and first responders, PTSD, trauma, emotion dysregulation, and borderline personality disorder. She has authored scientific publications on treatments for trauma-related anger and aggression.

Psychiatrist

Lucille Bess Mehring, MD, is a psychiatrist in the Rhode Island Hospital Partial Hospital Program.

Dr. Mehring received her medical degree from Jefferson Medical College in Philadelphia and completed her residency in family medicine and psychiatry at the University of Iowa Hospitals and Clinics. Dr. Mehring is board certified in psychiatry.  

 
 

Molly Z. Meth, PhD, is a psychologist with the Adult Partial Hospitalization Program at Rhode Island Hospital. She received her PhD from the University of Iowa and completed her fellowship at Providence VA Medical Center as part of The Warren Alpert Medical School of Brown University Training Consortium. Dr. Meth is a generalist who is interested in working with patients who suffer from a range of mental health concerns. She has a background in health psychology and experience working with veterans. 

Psychiatrist

Sumi Moon, MD specializes in psychiatry with a specific focus on combining biological and psychodynamic approaches to medicine. Dr. Moon has dedicated much of her career to promoting holistic and integrated patient care, as well as serving the psychiatric care of patients with varied medical conditions.

After completing her resident training at the University of Pennsylvania, Dr. Moon completed her fellowship at MD Anderson Cancer Center at the University of Texas, where she exclusively served cancer patients' psychiatric needs. Her expertise lead to a position at the Lahey Hospital and Medical Center in Massachusetts as director of consultation and liaison services. Dr. Moon has served in various leadership roles, including a position as assistant professor at Tufts University School of Medicine. She is board-certified in general psychiatry and psychosomatic medicine.

Dr. Moon is deeply committed to the continued care of patients with changing mental statuses. She formed a specialty task force dedicated to caring for these patients during her time at the Lahey Hospital and Medical Center. She also provides psychiatric care of patients with medical conditions. She currently serves at the Partial Hospital Program at Rhode Island Hospital.

Theresa A. Morgan, PhD, is a staff psychologist at the Rhode Island Hospital Partial Hospital Program.

Dr. Morgan received her doctorate from the University of Iowa. Her predoctoral and postdoctoral training were both completed at The Warren Alpert Medical School of Brown University, where she is currently a clinical assistant professor in the department of psychiatry and human behavior.

She is an active member of the Society for Research in Psychopathology, Association for Contextual Behavioral Science, and the North American and International Societies for the Study of Personality Disorders, and has authored scientific publications on the assessment, diagnosis, and treatment of personality and mood disorders.
 

Psychologist

Rachel B. Ojserkis, PhD, is a psychologist in the Adult Partial Hospitalization Program at Rhode Island Hospital. She has clinical experience working with anxiety disorders, PTSD and trauma, depression, and eating disorders. In addition, Dr. Ojserkis’s research interests include affective (particularly disgust) and mindfulness-based processes in anxiety and trauma-related disorders. She is a member of the Association for Behavioral and Cognitive Therapies, the Anxiety and Depression Association of America, and the Association for Contextual Behavioral Science. 

Brian Pilecki, PhD, is a postdoctoral fellow in clinical psychology at the Rhode Island Hospital Partial Hospital Program and The Warren Alpert Medical School of Brown University. 

Dr. Pilecki received his PhD in clinical psychology from Fordham University, and completed his internship in clinical psychology at the Weill-Cornell Medical College in New York. Pilecki is the deputy chairperson of a national Association for Contextual Behavioral Science (ACBS) committee, as well as membership chairperson of a local ACBS chapter.

He is the author of scientific publications in the areas of anxiety disorders, mindfulness-based treatments, and the relationship between theory and practice in psychotherapy.
 

Cerena Y. Reid-Maynard, MSW, LICSW

Thomas Sheeran, PhD, is a clinical psychologist with the Aging Family and Caregiver Program, the Adult Partial Hospital program at Rhode Island Hospital, and the Family Therapy program

Dr. Sheeran received his PhD in clinical psychology from the University of Virginia. He completed postdoctoral training at The Warren Alpert Medical School of Brown University (clinical research) and at the Institute of Geriatric Psychiatry, Weill-Cornell Medical College (geriatric mental health services).