About Dr. Lief

about-picI received my Bachelors Degree from Middlebury College in 1992 with a major in foreign language and minors in both music and education. I lived in Europe from 1995-1999 where I continued to improve my language skills and taught English as a foreign language. I enrolled in Widener University’s Institute for Graduate Clinical Psychology in 2001 where I received the Psy.D. Merit Scholarship. I received my doctorate from Widener in 2006. My doctoral dissertation was on the current state of pre-marital counseling progams in the United States.

Over the course of my career I have worked in a variety of clinical settings. During graduate school I spent a year as a practicum student at the Keystone Extended Care Unit which is a residential facility for the treatment of sex and love addiction. After the completion of that year, I stayed on at Keystone as part-time employee until 2006.

In the fall of 2006 I took a position as a part-time staff psychologist at the Council for Relationships, where I continue to work. At the Council I have treated individuals, couples, and families facing a variety of emotional and behavioral struggles. In 2010 I began working at STAR – Sexual Trauma and Recovery. STAR is an outpatient clinic that specializes in the treatment of sex and love addiction. In individual therapy I have treated both addicts and their spouses/partners, and I do couples therapy for this population as well. Currently I facilitate two therapy groups at STAR. In addition to these positions, I also run a private practice where I treat individuals and couples.

Since beginning my work at Keystone in 2002 I have specialized in the treatment of sex addiction, love addiction, compulsive sexual behavior, and hypersexuality. This has become a specific area of interest and expertise for me. In 2011 I became a Certified Sex Addiction Therapist (CSAT). I have lectured extensively on the assessment, diagnosis, and treatment of sexual addiction at the following institutions:

Thomas Jefferson University:

Masters Program in Couples and Family Therapy

Widener University:
Center for Human Sexuality Studies

Council for Relationships:
Postgraduate Training Program in Marriage and Family Therapy

I have also received specific training in couples and marriage therapy using the Relationship Enhancement Therapy technique. I truly enjoy treating couples and work hard to improve the levels of empathy and trust that the partners have for each other. It is often in the context of this improved empathy that change and healing can occur. I also work with couples to improve their communication skills, conflict management skills, and problem solving skills.



200 N. Monroe St.
Media, PA 19063


300 E. Lancaster Ave.
Wynnewood, PA 19096


255 S. 17th St. Ste 2200
Philadelphia, PA 19103