Read about Gaudenzia's leaders

Combined, Gaudenzia’s executive leadership team has more than 200 years of experience in their respective fields of study and practice. We are proud to attract some of the best and brightest in the field to help us fulfill our mission of helping individuals with substance abuse problems.

Leadership 41

Dale Klatzker, PhD

Chief Executive Officer, Gaudenzia, Inc.

With over 40 years of exemplary leadership experience in the area of Behavioral Healthcare, Dr. Dale Klatzker has been recognized on nationally for his visionary leadership and innovative contributions to the field. As the Chief Executive Officer, Dr. Klatzker brings a wealth of knowledge, skills and leadership to Gaudenzia that will continue to impact the lives of thousands of people every day.
Leadership 42

Michael B. Harle, MHS

President, Gaudenzia, Inc.

Michael Harle is the President of Gaudenzia, Inc. Mr. Harle began his career in 1973 as a chemical dependency counselor, and shortly after, developed drug and alcohol treatment programs in three state correctional institutions in Pennsylvania. He received his Master's Degree in Human Services from Lincoln University in 1978 and holds a certificate in Non-Profit Management from Harvard University Business School.
Leadership 29

Gadi Aronson, MSW

Director of Development

Gadi Aronson has been with Gaudenzia since 2004 and has more than 25 years experience in fundraising. Mr. Aronson is responsible for all aspects of fundraising and public relations for the organization.
Leadership 36

Cecilia Velasquez, MHS

Director of the Eastern Region

Cecilia Velasquez has been with Gaudenzia since 1981 and has been in the field of human services since 1974. Ms. Velasquez has worked with diverse populations including chemical dependency, women/women, and children, victims of domestic/sexual violence, dual diagnosis, homeless, community corrections, and prisons.
Leadership 31

John G. DiLeonardo, Esq.

Counsel and Director of Compliance

John DiLeonardo serves as Gaudenzia’s Counsel and Director of Compliance. He holds a Bachelor of Arts in Political Science from Washington & Jefferson College (1976) and a Juris Doctor from the University of Dayton School of Law (1979), where he was elected to the Order of the Barristers for superior achievement in courtroom advocacy. John has an extensive background in health care law. He has prosecuted and tried healthcare related and other cases in the Pennsylvania State Courts as well as in Federal Courts sitting in Pennsylvania and in Florida. His work experience includes serving as Pennsylvania Chief Deputy Attorney General for Medicaid/Healthcare prosecutions; as Prosecuting Attorney for the State Board of Medicine in Pennsylvania; and in private practice where he represented clients in civil, criminal, and administrative litigation matters.
Leadership 21

Sharon Johnson, MBA, SHRM-SCP

Director of Human Resources

Sharon Johnson has been with Gaudenzia for a combined total of 29 years and serves as the lead Human Resource professional for Gaudenzia. Sharon manages the full spectrum of human resources and personnel services for over 1200 full & part time employees. Sharon began her career at Gaudenzia in 1990. Since then, she has held several leadership positions within the Finance and Human Resource departments.

Sharon holds a Senior Certified Professional Human Resource Certification, (SHRM-SCP) from the Society for Human Resource Professionals, a Master’s Degree in Human Resources from Walden University, and a Bachelor’s Degree in Accounting from Temple University’s Fox School of Business.
Leadership 25

Erin Pressel, MS, MBA, CCJP, CCDP

Director of Marketing

Erin Pressel has worked in the Human Services field for over fifteen years in many different capacities in both the mental health and drug and alcohol systems. During her career, she has been a residential counselor working with at-risk youth, a mental health intensive case manager, a drug and alcohol counselor and a county case management specialist. She holds a B.S. from the University of Massachusetts at Lowell in Criminal Justice with a minor in Psychology, an M.S. from California University of Pennsylvania in Legal Studies with a concentration in Homeland Security and an MBA in Marketing from Columbia Southern University.
Leadership 43

Mark Sarneso, MS

Director of the Central and Western Region

Mark Sarneso holds a B.A. from York College of Pennsylvania and an M.S. from the University of Pittsburgh’s School of Social Work with a concentration in Child and Adolescent Development. He has over 35 years of increasingly responsible management positions in the behavioral health field. Mark also has extensive experience in advocacy of public policy, as he was Chairman of DASPOP (Drug and Alcohol Service Providers of Pennsylvania) for 17 years.