Medical & Clinical Leadership

Jim Greenblatt

James M. Greenblatt, M.D.

Chief Medical Officer                                                                     Dr. James M. Greenblatt is the Chief Medical Officer at Walden Behavioral Care. He provides medical management, leadership and oversight of Walden’s eating disorder programs. Working with thousands of children, adolescents and adults, Dr. Greenblatt found that each individual has a unique biochemical profile, range of behaviors and treatment needs. Dr. Greenblatt is dually board certified in child and adult psychiatry. He received his medical degree and completed his adult psychiatry residency at George Washington University in Washington, D.C. He completed a fellowship in child and adolescent psychiatry at Johns Hopkins Medical School. In addition, Dr. Greenblatt is a clinical faculty member at Tufts Medical School, Department of Psychiatry. Dr. Greenblatt lectures extensively throughout the U. S. on integrative therapies for mental health. He is also the author of Answers to Anorexia, which draws on his many years of experience and expertise in integrative medicine and treating eating disorders, The Breakthrough Depression Solution which outlines a personalized nine step method for beating the physical causes of depression and Answers to Appetite Control which confronts a mistaken understanding of why people struggle with weight management and introduces biological solutions for re-balancing appetite and eating patterns.

Marcia L. Zuckerman

Marcia L. Zuckerman, M.D.

Medical Director of Psychiatric Services
Dr. Marcia L. Zuckerman is the Medical Director of Psychiatric Services for Walden Behavioral Care.  In this role, she provides medical management, leadership, and oversight of Walden’s psychiatric programs. Prior to working at Walden, Dr. Zuckerman was a psychiatrist for six years at Arbour-HRI Hospital, a 66-bed licensed private psychiatric facility located in Brookline, Mass.  Before that, she held staff psychiatrist positions at Vinfen, Massachusetts General Hospital and Cambridge Health Alliance. Dr. Zuckerman has been a member of the Massachusetts Psychiatric Society and the American Psychiatric Association since 1992.  She was the principal investigator on the publication, “Tolerability of Selective Serotonin Reuptake Inhibitors in Thirty-nine Children under Age Seven: A Retrospective Chart Review,” which appeared in the Journal of Child and Adolescent Psychopharmacology in April 2007.  In addition, Dr. Zuckerman is the Associate Editor of The Carlat Psychiatry Report and The Carlat Child Psychiatry Report. Dr. Zuckerman earned her Bachelor of Arts degree from Princeton University and her M.D. from Harvard Medical School.

Rebekah Bardwell

Rebekah Bardwell Doweyko, LPC

Director of the South Windsor, CT Clinic

Rebekah Bardwell Doweyko is the Director of Walden Behavioral Care’s South Windsor, CT Clinic.  In this role, she is responsible for providing clinical, administrative and fiscal oversight as well as development for the clinic.  Formerly, she was an Intensive Care Manager at the Connecticut Behavioral Health Partnership (Value Options, Inc.) in Rocky Hill, CT where she assisted providers in the treatment and discharge planning for patients identified as high utilizers of inpatient hospitalization and detox services, conducted clinical trainings on Eating Disorders for staff and managed CT Medicaid cases with complex Eating Disorder issues. Prior to this role, Ms. Doweyko has held several clinical positions at various facilities including founding and directing the Intuitive Eating Program (IOP) at Hollywood Pavilion Hospital in Hollywood, FL. She has also held various positions at The Renfrew Center in Coconut Creek, FL acting as a Primary and IOP therapist. There she developed the “Real-Life Excursion” program allowing patients to begin their transition from Residential treatment. Rebekah also specializes in substance abuse, and has worked as a Primary Therapist at The Caron Renaissance Institute and Alternatives In Treatment, Inc. of Boca Raton, FL. She was featured in the Emmy Nominated HBO Documentary “THIN” and composed the foreword to the highly acclaimed “Maintaining Recovery from Eating Disorders” Self-help book by Naomi Feigenbaum.  She earned her Master’s degree in Mental Health Counseling from Florida Atlantic University in Boca Raton, FL and is a Licensed Professional Counselor in the State of Connecticut.

Rebecca Bernat

Rebecca Bernat, MSW, LICSW

Director of the Braintree, MA Clinic

Rebecca Bernat has been the Director of Walden Behavioral Care’s Braintree Clinic since it opened in February of 2012. In this role, she is responsible for providing clinical, administrative and fiscal oversight and development for the clinic. Formerly, she worked for 10 years as a Clinical Administrator at Germaine Lawrence, a treatment center for adolescent girls with complex behavioral, psychological and learning challenges. During this time, Ms. Bernat obtained extensive understanding, training and skills in dialectical and cognitive behavioral therapy, family-based treatment and adolescent development. Additionally over the last 2 year she has managed an outpatient practice in Brookline, working with Adolescent girls and facilitating DBT treatment.  She also sits on a consultation team at McLean’s hospital weekly and provides outpatient clinical supervision.  She earned her master’s degree from Simmons College and has been DBT trained through Marsha Linehan’s Behavioral tech LLC.


Debra Foti-Flynn

Debra Foti-Flynn, M.S., RN, CPNP

Nurse Practitioner
Debra Foti-Flynn is a nurse practitioner on the inpatient psychiatric and eating disorder units at Walden Behavioral Care in Waltham, MA. At Walden, her responsibilities include coordination of care for complex, medically compromised eating disorder patients, daily collaboration with a multidisciplinary treatment team, daily medical and psychopharmacological evaluations, ongoing assessments of patients for physical and emotional safety, psychiatric evaluations and physical exams. Prior to joining Walden, she was a full time Visiting Professor of Nursing at Regis College. Debra earned her master’s degree in nursing from Regis College in Wellesley, MA.

Ginger Greco

Ginger Greco, R.D., L.D.N.

Director of Nutrition and Health Services
Ginger Greco is Walden’s Director of Nutrition and Food Services.  In this role, she is responsible for all of Walden Behavioral Care’s dietary and nutritional service operations and manages and supervises the registered dietitians.  Prior to working at Walden, Ms. Greco was the Regional Director of Food and Nutrition at Health Bridge Management where she oversaw operations and clinical nutrition of 31 centers in MA, CT, MI, OH and PA.   Before that, she spent over ten years as a dietitian at several healthcare facilities.  Ms. Greco earned her bachelor’s degree in Nutrition and Psychology at Simmons College and attended the University of New Hampshire for their graduate level AP-4 program.

Gail Hanson-Mayer

Gail Hanson-Mayer, APRN, CS, BC, MPH

Advanced Practice Nurse
Gail Hanson-Mayer is an Advanced Practice Nurse responsible for the medical and psychiatric management for the Walden Behavioral Care Massachusetts clinic locations. She is responsible for the coordination of care for patients with a variety of eating disorders. In coordination with a multidisciplinary team, Gail monitors and evaluates patient medication and provides ongoing physical and emotional assessments.  Formerly, she was the Vice President of Clinical Operations at Walden and was responsible for the clinical operations of the inpatient and residential programs in Waltham, MA.  Gail has 35 years of nursing experience.  Currently, she is the Director of Counseling Services for Regis College.  In this role, she is responsible for coordination of mental health services for the undergraduate and graduate student populations.   She is also an advanced practice nurse at Comprehensive Psychiatric Associates where she provides outpatient services to a caseload of psychiatric, addiction, eating disorders and co-occurring disorder patients.  In addition, Gail has worked in senior nursing and consulting positions at Sterling Resources, LLC, Universal Health Services, Management Services, Inc., Choate Health Management, Inc., Choate Health Systems, Inc.  She earned her nursing degree from Massachusetts General Hospital. She also earned a master’s degree in public health from Boston University School of Medicine.


Robert J. Keane, Ph.D., LICSW

Assistant Vice President of ClinicBob Keaneal Services & Training

Robert J. Keane is the Assistant Vice President of Clinical Services & Training at Walden Behavioral Care. In this role, he is responsible for the daily operations of clinical inpatient services, program coordination, utilization review and clinical training. Dr. Keane is a senior behavioral health administrator with more than 30 years of experience treating diverse patient populations within the mental health field. Formerly the Deputy Commissioner at the Department of Mental Health, he was a co-principle investigator of a four year SAMSHA grant that significantly reduced the use of seclusion and restraint in Massachusetts and collaborated with a team to design the Bureau of Substance Abuse Services’ strategic plan for the Department of Public Health (DPH). Prior to his work with DMH, Dr. Keane was the Regional Director for Boston at the Massachusetts Behavioral Health Partnership (MBHP), the managed care carve-out company responsible for managing mental health and substance abuse benefits for Medicaid. At MBHP, he was involved in the design and procurement of a service system that was responsive to the needs of consumers and their families. Dr. Keane earned his master’s degree and Ph.D. from Boston College Graduate School of Social Work, where he is currently a member of the faculty.

Renee Bazinet Nelson

Renee Bazinet Nelson, Psy.D.

Director of Adolescent Services
Renee Bazinet Nelson, Psy.D, is the Director of the Adolescent Intensive Outpatient Program at Walden Behavioral Care. In this role, she oversees all aspects of the organizations adolescent intensive outpatient programs including administrative, fiscal and clinical management. Formerly, she served as the Assistant Director of Walden’s Worcester clinic.  Dr. Nelson earned her doctorate in clinical psychology with a concentration in health psychology from the Massachusetts School of Professional Psychology and completed her post-doctoral training at the Cambridge Eating Disorder Center in Cambridge, MA.


Laura Roias

Laura Roias, MSW, LICSW

Director of the Worcester Clinic
Laura Roias is the Director at Walden Behavioral Care’s Worcester clinic. In this role, she is responsible for providing clinical, administrative and fiscal oversight and development for the clinic. Formerly, she served as the Assistant Director of Walden’s Partial Hospitalization Program and Intensive Outpatient Program where she obtained extensive experience conducting individual, group and family therapy. Ms. Roias employs a strengths-based perspective and utilizes a wide range of therapeutic modalities including cognitive behavioral, dialectical behavioral and interpersonal therapy. She received her master’s from the University of North Carolina.

Angela Snyder Rowan

Angela Snyder Rowan, MSW, LICSW

Director of the Northampton Clinic                                         Angela Snyder Rowan, MSW, is the Director of Walden Behavioral Care’s Northampton Clinic. In this role, she is responsible for providing clinical, administrative and fiscal oversight as well as development for the clinic. Formerly, Ms. Rowan spent seven years at ServiceNet, an organization that provides a wide range of human services for people in the Pioneer Valley area of Massachusetts.  While there, she held several positions including Adolescent Dialectical Behavior Therapy Coordinator, Intern Coordinator,  dialectical behavioral therapist and clinician.  Angela developed the adolescent DBT program into a year-round, multi-site program with rolling admissions.  She also developed a recruitment and training program for masters-level interns at ServiceNet’s Outpatient Behavioral Health Centers. Prior to ServiceNet, Ms. Rowan spent five years running her own private practice, Rowan Psychotherapy, where she worked with adolescents, adults, couples, families and specialized in the treatment of transgender individuals. Prior to opening her practice, Ms. Rowan worked for several years as a clinician at Child and Family Service of Pioneer Valley. She received her Master of Social Work degree from Smith College.

Emily Slager

Emily Slager, M.Ed., LMHC

Director of the Waltham Residential, Partial Hospitalization and Intensive Outpatient Programs
Emily Slager is the Director of Residential, Partial Hospitalization and Intensive Outpatient Programs for adolescents and adults at Walden Behavioral Care’s Waltham location. In this role, she manages all aspects of these programs including administrative, fiscal and clinical management.  Formerly, she was a clinician on Walden’s inpatient eating disorder and psychiatric units.  Ms. Slager earned her master’s degree in counseling psychology from Boston College. Her professional interests include the development of eating disorders in athletes and in the lesbian, gay, bisexual and transgender community.