Our Team

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Farnum Leadership

Amy Joslin

Amy Joslin

Interim SVP, Farnum

Amy Joslin is the Interim SVP, Farnum. She brings 28 years of leadership in Family Practice, Internal Medicine, Neurology, OB/GYN, and Women’s Health to the Easterseals team as well as being an Operations Excellence Green Belt. Her career path also afforded an opportunity for involvement in several Clinical Research Studies with coursework through the Collaborative Institutional Training Initiative in Biomedical and Human Subject Research.

Always on the lookout for new ways to solve old problems, she revels in challenging the status quo. Her experience as a Green Belt facilitated the creation of a Travel Clinic, a Maternal Mental Health Safety Bundle, and a Women’s Health Center.

Amy is drawn to opportunities where she can support the community and disadvantaged populations. She found Easterseals to be a natural fit for her skills and desire to be of service.

Outside of work, she enjoys traveling, volunteering, and spending time with her family and two dogs.

Powen Hsu, MD

Medical Director

Dr. Powen Hsu is the Medical Director for Farnum Center. He is certified in Physical Medicine & Rehabilitation through the American Board of Physical Medicine Rehabilitation. He also holds certification in Addiction Medicine through the American Board of Preventive Medicine.

He is a graduate of Tufts University School of Medicine, having served his residency at Sinai Hospital and Johns Hopkins University Hospital. Dr. Hsu founded his private practice New Era Medicine in 1999, and his experience includes Medical Director roles at a number of facilities over the years.

Dr. Hsu was recognized by New Hampshire Magazine as “Top Doctor” in 2009, 2015, and 2016.

Charlotte E. Trenholm, LICSW, MLADC

Vice President of Clinical Services

Charlotte is a clinical social worker with over 20 years of experience working with clients within residential, psychiatric, inpatient and outpatient settings. Her clinical service over the years has focused on providing care to high-risk youth and families and the treatment of individuals with dual diagnosis.

Before joining Farnum, she worked for the Greater Nashua Council on Alcoholism, Inc., Keystone Hall as the Director of the Intake Services; she oversaw admissions within their residential High Intensity, Low Intensity, and the Cynthia Day Family Center substance use treatment programs. In addition, she has served in the role of Clinical Supervisor for the Community Alcohol Information Program conducting clinical supervision and consultations with staff and the care management team. She has also held the position of Assistant Director for the Webster House, a residential treatment program for youth in New Hampshire.

Charlotte earned her Bachelor’s degree in Psychology and a Master’s degree in Social Work from the University of New Hampshire. She is dual licensed in the State of New Hampshire with her LICSW and MLADC.

Alexandra Hamel

Director of Compliance and Clinical Performance

Alexandra is Vice President of Residential Clinical Services at Farnum Center. Alexandra has over 20 years of experience working in the substance use treatment field primarily in residential settings. She previously worked for Greater Nashua Council on Alcoholism – Keystone Hall as Director of Programs and Clinical Services. She worked in all aspects of residential and outpatient treatment services, including the Cynthia Day Family Center and contracted corrections programs.

Alexandra received her Master’s Degree in Counseling Psychology from Antioch University New England and is a Master Licensed Alcohol and Drug Counselor (MLADC).

Alexandra has been an adjunct professor at NHTI – Concord’s Community College in the Addictions Studies program since 2013. She is currently a member of the New Hampshire Board of Licensing for Alcohol and Other Drug Use Professionals and is a Past President of the New Hampshire Alcohol & Drug Abuse Counselors Association (NHADACA). 


If you are interested in joining the Farnum team you can learn more here.