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Health and Counseling Services Staff


Sara Aierstuck, MSN, RN, FNP-BC
Director of Health and Counseling Services
Sara has clinical experience in general medicine, women’s health, pediatrics, sports injuries, travel medicine, eating disorders, and transgender health. She has worked in college and university health centers at Yale University and the University of Massachusetts Amherst. She earned a B.A. in Spanish and Psychology from Franklin and Marshall College, an M.S.N from Yale University, and is AANC board-certified as a family nurse practitioner. Sara has directed the Hampshire Health and Counseling Service since 2009.

Sara has three daughters, including two currently in college. When not at work, she plays cello and viola and spends as much time as possible enjoying the beautiful Pioneer Valley trails, lakes, and back roads.

Ronald A. Kelter, PA-C, Lic Ac, AAHIVS
Ron is a physician assistant and acupuncturist who joined the staff at Hampshire College in fall 2013. Ron has years of experience in general primary care to adults and adolescents as well as gastroenterology specialty practice. He is a graduate of Northeastern University’s Bouve College of Pharmacy and Health Sciences with a master of health professions and completed a graduate level program in Traditional Chinese Medicine at the New England School of Acupuncture. He is a certified HIV specialist through the American Academy of HIV Medicine. Ron graduated from Clark University with a B.A. in Psychology and Sociology.

Judy Jackson, R.N.
Advice/Clinic Nurse
Judy has worked in college health since 1993, and started at Hampshire in 1999. She attended Elms College and graduated from Mt. Auburn Hospital School of Nursing. As a registered nurse at HCHS, Judy is interested in helping students with advice about preventative and self-care as well as how to navigate the health care system. She enjoys gardening, reading, and yoga.

Robert Horowitz, M.D.
Senior Staff Physician, University Health Services, University of Massachusetts Amherst
Dr. Horowitz is a consulting physician who is available for appointments at Hampshire College on Thursday mornings in fall 2013. He is a family practice physician with particular interest in behavioral medicine, including drug, tobacco, and substance use issues; mind-body medicine; and men’s health.

He is a graduate of Kenyon College and the New York Medical College and did his residency at the University of Virginia. He lived and worked for 10 years with Native Americans in Arizona, on the Navajo reservation and with Pueblo tribes in the Santa Fe, NM area. He is American Board of Family Medicine certified and a member of the Massachusetts Medical Society.

Dr. Horowitz has also been a photographer and artist for 35 years; his photographic work has been shown locally and in Santa Fe, and is part of public and private collections.


Eliza McArdle, Ph.D.
Director of Counseling Services
Eliza McArdle has been at HCHS since 2003. She received her degree in clinical psychology from the University of Massachusetts and completed her training through Harvard Medical School and the Massachusetts Mental Health Institute. She has been working in college mental health settings since 1996, and has additionally worked with the homeless and chronically mentally ill population in Boston. Eliza’s clinical and research interests include the treatment of self-injurious behavior, eating disorders, and depression. She has a special interest in college student identity development and has extensive experience working with the LGBT community.

Stephen M. Klein, Ph.D.
Senior Psychologist
Stephen Klein has been with the College since 1972 and, until 2008, served as the director of mental health. Dr. Klein was trained at the University of Massachusetts and the University of California Medical School, San Francisco. He has a special interest in psychoanalytic theory and its application to clinical practice. He is also very involved in developing the counseling service’s group therapy program.

Corey Albert Griffin, Ph.D.
Staff Psychologist
Corey Albert Griffin is a psychologist who has worked in college mental health since 2003. She did graduate-level research studying online support groups. Corey uses an eclectic approach to therapy, integrating cognitive-behavioral and psychodynamic techniques and always trying to match her style to the needs of each individual client.

Angela Bardawil, LICSW
Staff Psychotherapist
Angela Bardawil has been an individual psychotherapist for over 20 years. She received her master's at Smith College School for Social Work and has continued to practice psycho-dynamic, psychoanalytically oriented psychotherapy with a variety of diverse populations. Angela is especially committed to issues of perso-al and cultural identity and to maintaining gains made in psychotherapy over time. She has experience in treating substance abuse and addiction, eating disorders, stress, depression, anxiety, and trauma as well as a wide variety of other issues, and is especially interested in the academic, social, and emotional issues that face college aged individuals.

Rachel Epstein, Psy.D.
Post-doctoral fellow
Rachel Epstein is a psychologist who received her Psy.D. from The Wright Institute in Berkeley, CA in 2008. She has worked in both college mental health and community mental settings treating adolescents, adults and couples. She considers her style to be integrative, using psychodynamic and mindfulness-based approaches to address issues of depression, anxiety, addiction, and trauma, among others. Most of all, she views understanding relationships--from childhood, from the present, with oneself, with others--to be key in helping her clients move ahead in their lives with a sense of empowerment and contentment.

Rachael Goren-Watts, Psy. D
Post-doctoral fellow
Rachael Goren-Watts received her doctoral degree in clinical psychology from Antioch University New England. She has been working in college health/mental health settings since 2004, and has also worked with learning disabilities and assessment services for children and adolescents, as well as eating disorders. Rachael's clinical and research interests include eating disorders and body image, trauma, women's health, issues relating to LGBTQ identity, and couples. Rachael takes an integrative approach to psychotherapy, blending psychodynamic, narrative, and relational theories in order to address any concerns that individuals present with in therapy.

Hillary Halpern, M.S.
Pre-doctoral intern
Hillary Halpern is a doctoral student studying clinical psychology at the University of Massachusetts Amherst. She has worked as a psychotherapist, crisis counselor, and advocate in community and residential settings. Hillary works primarily from a psychodynamic framework with attention to feminist and multicultural issues. In addition, she is interested in catering to individual clients’ needs through the incorporation of cognitive and behavioral techniques. Understanding relationships and early experiences and enhancing self-compassion are central components of Hillary’s approach to psychotherapy.

Erik Zimmerman, M.D.
Consulting Psychiatrist
Dr. Zimmerman is a graduate of Penn State University and the Stanford University School of Medicine. He did his residency at the Yale University Department of Psychiatry and fellowship at the Yale University Student Mental Health Residency. Areas of clinical interest include psychopharmacology and psychodynamic psychotherapy.


Christine Casey
Office Coordinator

Kate Marques
Office Coordinator



Contact Us

Health and Counseling Services
Hampshire College
893 West Street
Amherst, MA 01002

© 2014 Hampshire College 893 West Street Amherst, MA 01002 . 413.549.4600