Our Staff

Mariah Fenton Gladis, MSS, QCSW

Mariah Fenton Gladis, MSS, QCSW, is the Founder and Clinical Director of the Pennsylvania Gestalt Center for Psychotherapy and Training. An internationally renowned workshop leader and trainer, Mariah has more than 35 years experience as a psychotherapist and Gestalt Trainer, having trained hundreds of professionals and conducted workshops throughout the United States, Europe, the West Indies and South America.

Mariah as received numerous awards and honors. In 2005, she was named Social Worker of the Year in the State of Pennsylvania. In 2006, she was given the International Stevie Award for Women in Business. And recently, in 2008, Mariah was awarded the prestigious Living Legacy Award from the Women’s International Center. Additional honors include: Hope and Courage Award from Greater Philadelphia Chapter of the ALS Association, Lifetime Achievement Award – Marymount University Alumni Association, Pennsylvania State House of Representatives and State Senate Citation for Recognition of Community Service, Advocacy Award from Greater Philadelphia Chapter of Amyotrophic Lateral Sclerosis (ALS) Association, Chairman’s Choice Award for Citizenship – Great Valley Regional Chamber of Commerce, Annual Achievement Award from Fighting Back, a rehabilitation program dedicated to those recovering from traumatic illness.

Mariah is on the faculty of Esalen Institute in Big Sur, California, the Adjunct Faculty of the Gestalt Therapy Institute of Philadelphia, the Board of Advisors of Camp Dreamcatcher – a camp for children affected/infected with HIV/AIDS, a consultant for the Academy of Community Music, a non-profit organization dedicated to engaging children and parents in shared musical activity, Faculty and Trainer for Center for a Healthy World, a volunteer-driven psychotherapy cooperative.

In February 2006, Mariah established the Mariah Fenton Gladis Foundation, which supports wellness, life skills training, personal growth and educational and psychotherapeutic counseling programs for individuals interested in or needing these services. The foundation’s mission is inspired by the goal of improving the quality of life for those that are less fortunate through programs designed to develop their emotional, spiritual, intellectual and physical needs.

Mariah is the mother of two young men, Luke and Cole, whom she adores. She is also a long-term survivor of Lou Gehrig’s Disease having been diagnosed in 1981 and given a 10% chance to survive two years. Besides working out at the gym, she snorkels and is hoping to take a group of newly diagnosed ALS patients on a trip down the Colorado River. She is married to Ron Gladis, a recovering electrical engineer who owns a Video and Film Production Company.

“I encourage you to live with transparency, knowing you are safer revealing your truth than you are covering it up with layers of armor. Feel the full range of your feelings. Create those moments of healing that soothe the cries of your soul and propel you forward in your personal evolution. Risk creating and fully entering those moments of vulnerability that will break your heart wide open and stretch your capacity to love.”

- Mariah


Mark Putnam, M.D.

Mark Putnam, M.D., co-leads workshops and training at the Center, is Medical Director, Haven Behavioral Hospital, Medical Director, Berkshire Psychiatric and Behavioral Health Associates, Medical Director, Department of Psychiatry, St Joseph Medical Center in Reading, PA, and is a board-certified psychiatrist in private practice seeing children, adolescents, and adults.

Mark enjoys his family first and foremost. Mark is married and has two children, one adopted from China. His wife, Linda Reichert, is Founder of the Network for New Music.  Prior to medical school he owned a small business in restoration and construction and enjoy creating with his hands.  He is a former ski instructor currently learning snowboarding to be able to keep up with his retired older brother who is an excellent snowboarder.

“There are many personal paths to healing. For me, Gestalt theory has been an immensely important paradigm through which to facilitate healing for others and for myself.

One important underlying assumption in Gestalt theory, as practiced in our Center, is that we all share an innate drive to move toward health, like a flower drawn to the sun. We also believe in the wisdom of our organism, in our being, to know what we need in order for us to heal. These assumptions ground our work as we join with the client and student on their unfolding path of growth. I emphasize these beliefs, as I perceive them to be especially important at this time in our culture when so many believe they have the answer for what is right for everyone else. The clients are much wiser than I am regarding their needs and what is important in their lives.

At the same time I recognize the important role I play for those I am in contact with as a physician, teacher or therapist. And I am committed to providing training that not only teaches excellence in clinical skills but which also creates a safe environment for our clients and trainees to grow personally.”

- Mark


Dori Middleman M.D.

Dori Middleman MD, co-leads workshops and training at the Center and is a board-certified psychiatrist and a Gestalt psychotherapist in private practice treating children, adolescents, adults, and families. Dori graduated from Temple University School of Medicine, completed her adult psychiatry residency at Hahnemann University Hospital and child psychiatry fellowship at the Philadelphia Child Guidance Center. She then became a faculty member in the Department of Psychiatry at the University of Pennsylvania School of Medicine and has presented at a number of institutions, including the Family Institute of Philadelphia and the Bryn Mawr and University of Pennsylvania Schools of Social Work.

Dori is in full-time private practice in Merion, PA. She works with people of all ages, teaches and supervises therapists, and prescribes medication for people who wish to combine biological therapies with other methods of healing.

Dori is also Founder and director of the Center For A Healthy World, a volunteer-driven psychotherapy and training cooperative that offers free psychotherapy in exchange for volunteer work with charitable organizations. This organization also provides free training to the practitioners who provide therapy services.

Dori is married to Karl Middleman, the Founder and Director of the Philadelphia Classical Symphony. They have three children: a son, a daughter, and an apricot standard poodle named Dmitri.

Additional Instructors

Leslie FLeslie K. Fadem, MFT

Leslie K. Fadem, MFT, is a Licensed Marriage and Family Therapist in private practice specializing in the treatment of anxiety disorders and trauma recovery with children, adolescents and families. Leslie facilitates anxiety disorders support groups, conducts supervision and training, and is a past director of the Anxiety and Depression Treatment Clinic in Del Mar, CA. She is current president of the San Diego Phobia Foundation.



“My philosophy of practice is based upon the Gestalt concept that each individual is the best guide to their own needs and that my skill can be most useful in collaboration with the individual and others in their lives - family, friends, and professionals. Accordingly, I rely on communication with you to do my job well.

I specialize in dealing with patients who are motivated to promote their own health and healing and are interested in combining traditional and alternative therapies. I have treated many professionals, including mental health professionals, and their families and people of all races, backgrounds, and sexual orientations.”

- Dori