Lieber Clinic Staff

Alice Medalia, Ph.D.

Clinical Director, NY State Office of Mental Health Cognitive Health Services

Professor of Medical Psychology
Director of Psychiatric Rehabilitation
Columbia University Medical Center

Tiffany Herlands, Psy.D.
Clinical Director, Lieber Recovery Clinic
Assistant Professor of Medical Psychology

Columbia University
Member,  Columbia  University Academy of Clinical Excellence (ACE)

Dr. Medalia is an international leader in the field of psychiatric rehabilitation, who focuses on the treatment of neuropsychological disorders in psychiatric illness. She developed the widely used NEAR (Neuropsychological & Educational Approach to Remediation) model to help people with mental illness improve their thinking skills in such areas as attention, memory, processing speed and problem solving. She lectures and consults to agencies worldwide and conducts training workshops for clinicians who want to learn how to provide cognitive remediation to psychiatric patients. Dr. Medalia works with policy makers, researchers, clinicians, families and patients to bring awareness about the impact of cognitive dysfunction on recovery. In order to facilitate greater awareness about cognition in the rehabilitation field, she started the largest conference on this topic, Cognitive Remediation in Psychiatry, which takes place the first Friday in June in New York City. Her research focuses on the factors that impact a successful recovery of neuropsychological functions. Dr. Medalia's contributions as a neuropsychologist, researcher and advocate of cognitive remediation have won her awards from professional and advocacy groups.

Enid Gertmenian, LCSW

Ms. Gertmenian-King has been a clinical social worker at the Columbia University Day Treatment Program since 2008.  She received her undergraduate degree from Eugene Lang College where she majored in psychology and literature.  She worked on several NIMH-funded research projects for the next five years, and then completed a graduate degree in social work at the Columbia University School of Social Work with a focus on mental health.  She worked at several community mental health agencies before joining the Columbia University Department of Psychiatry's Day Treatment Program and the Lieber Recovery Clinic. Here, she developed a manualized treatment to address executive functioning skills deficits and self-esteem problems for individuals with ADHD and runs the executive functioning program.  She has also adapted Dialectical Behavioral Treatment (DBT) for individuals with psychotic disorders and runs a weekly group.

Daniel Mancini, LMHC

Mr. Mancini is a Licensed Mental Health Counselor who earned two Master's Degrees in Counseling Psychology from Teachers College at Columbia University. He specializes in cognitive remediation, executive functioning skills training, and self-esteem work. Mr. Mancini is a regular presenter at the annual Cognitive Remediation in Psychiatry Conference in New York. Mr. Mancini maintains a private practice in Connecticut.

Dr. Herlands received her doctorate in Clinical Psychology from the Ferkauf Graduate School of Yeshiva University. She completed a clinical internship in neuropsychology on the neuropsychiatric service at Montefiore Medical Center, and was awarded the Marie Kessel Fellowship, a clinical and research fellowship in the neurocognition and treatment of cognitive impairment in schizophrenia spectrum disorders. Following the fellowship, Dr. Herlands became an attending neuropsychologist at Montefiore Medical Center and an Assistant Professor of Psychiatry at the Albert Einstein School of Medicine. In 2006, she was promoted to Director of Neuropsychology in the Department of Psychiatry at Montefiore Medical Center. Later that year, she joined Columbia University to take part in the development of the Lieber Clinic and was appointed Clinical Director. Dr. Herlands has academic appointments at both Columbia University, College of Physicians and Surgeons, and New York Psychiatric Institute, Behavioral Health Services and Policy Research, and was voted into the Academy of Clinical Excellence in the Vagelos College of Physicians and Surgeons at Columbia University. Dr. Herlands is a published author and lectures regularly on a broad range of topics related to rehabilitation and recovery in psychotic disorders, intrinsic motivation, and cognition, and consults on complex cases.

Emily Nicholas, LCSW

Ms. Nicholas received her Master's Degree in Clinical Social Work from University of Chicago's School of Social Administration.  She has worked with adolescents and adults in a diverse mental health agency in Chicago before joining the Lieber Clinic staff in 2014.  Ms. Nicholas facilitates several groups, including cognitive behavioral techniques for symptom management, dialectical behavioral therapy, and cognitive remediation. She also facilitates the Family Orientation session which introduces clients and their families to the clinic and provides psychoeducation. Ms. Nicholas is an individual care coordinator for many clients at the Lieber Clinic and sees patients for individual psychotherapy as part of the Columbia University Faculty Practice Organization.

Brian Mueller, PhD
Family and Couples Therapist

Dr. Mueller completed his PhD in Clinical Psychology at the City University of New York. His dissertation research focused on emotion regulation in parents and children. He trained at Columbia University Medical Center for his predoctoral internship and at the Columbia Day Treatment Family Therapy program for his postdoctoral fellowship. In addition to working with individual families and couples, Dr. Mueller leads support groups for family members and loved ones of clients at the Lieber clinic.

David Lynch, PhD
Postdoctoral Fellow

David Lynch, Ph.D., is a psychologist with extensive training in the assessment and treatment of psychotic disorders. Dr. Lynch completed his Masters and Doctoral degrees in Clinical Psychology at Teachers College, Columbia University.  Over the course of his training, he has assessed and treated individuals with psychosis within the contexts of inpatient psychiatry, community mental health clinics, correctional mental health, consultation psychiatry and comprehensive psychiatric emergency services. While completing his graduate training, Dr. Lynch was a staff member at Columbia University’s department of Undergraduate Student Life, training student staff members on mental health first aid and promoting overall wellness.  He completed his predoctoral internship at the Mount Sinai Icahn School of Medicine site at Elmhurst Hospital Center, providing a vast array of psychiatric services within the multiculturally diverse context of Queens, New York. Dr. Lynch’s research focuses on the conditions necessary to promote positive outcomes within psychotherapy, particularly aspects related to the therapeutic alliance between the client and clinician. His dissertation research identified in-session predictors of self-harm behaviors within Dialectical Behavior Therapy (DBT) treatment.  Dr. Lynch is a current Marie Kessel fellow who leads several groups at the Lieber Recovery Clinic, including Men’s Group, DBT, Harm Reduction and Coping Through Music.

Marie Hansen, PhD
Postdoctoral Fellow

Dr. Hansen is a recovery-oriented psychologist and specialist in the area of psychotic disorders. She completed her PhD in Clinical Psychology at Long Island University Brooklyn and her predoctoral internship at NYU/Bellevue Hospital Center. She has trained at NYP/Weill-Cornell Medical Center, Columbia University Medical Center, and Mount Sinai Icahn School of Medicine, where she received advanced training in Cognitive Behavioral Therapy for Psychosis (CBTp). In addition to clinical practice, Dr. Hansen is a researcher in the area of psychosis and is the author/co-author of several papers on topics such as cognitive remediation and auditory hallucinations. Her dissertation research focused on the role of emotional dysregulation in hallucinations and delusions. Dr. Hansen leads several groups at the Lieber Clinic and sees individual patients for CBT for Psychosis. Dr. Hansen is a current Marie Kessel fellow.

Sheyla Delvecchio
Skills Coach

Sheyla Delvecchio studied Special Education at the University of Rio de Janeiro. She received additional training in ADHD, Autism, and Learning Disabilities at Columbia University's Graduate School of Education. Ms. Delvecchio, a senior skills coach, has specialized training in teaching social skills to people with schizophrenia, autism spectrum disorder, and to utilize LEAP and Motivational Interviewing techniques. Ms. Delvecchio works as a skills coach with individuals and small groups to promote social skills, executive functioning skills, and independent living skills. Ms. Delvecchio is fluent in English and Portuguese.

Ashley Paquin, MA
Supported Employment and Education Specialist

Ashley Paquin is a Supportive Employment and Education Specialist providing person-centered services to those with a psychiatric diagnosis. Ms. Paquin has two Master’s degrees in Mental Health Counseling from Teachers College at Columbia University and has experience in community settings connecting individuals to employment. Ms. Paquin provides a range of services, including but not limited to: resume and cover letter development, motivational interviewing, soft skills development, job/volunteer exploration and development, job coaching, as well as college planning, scheduling and applications.

Ariel Swyer, MA
Skills Coach

Ariel Swyer holds a master’s degree in psychology from the University of Glasgow and a bachelor’s degree in philosophy and cognitive science from Swarthmore College. She works with individuals and small groups, as a recovery coach, focusing on the improvement of social skills. She has previous experience working at Soteria, a therapeutic community residence in Vermont for individuals experiencing psychosis. She also teaches psychology at York College, CUNY and her main research interest is hallucination in a variety of contexts.

Michael Scharf, MA
Skills Coach

Michael is a New York City native and an alumnus of the United Nations International School. He completed his master's degree in Psychology at The New School for Social Research and is currently pursuing a doctoral degree in Clinical Psychology at Long Island University. He has received training in Cognitive Behavioral Therapy for Psychosis (CBTp) and has worked as a therapist with individuals experiencing psychotic symptoms. In addition, he is a certified mediator at the New York Peace Institute, which has provided him with much experience helping people problem-solve, take responsibility, make decisions, and set goals during conflict and in other highly emotional, tense situations. At Lieber, Michael works as a recovery coach, helping individual clients with social skills and life skills.  

Lieber Recovery and Rehabilitation Clinic

Columbia Doctors

51 West 51st Street, Suite 340

New York, NY 10019


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