KeyStone Center

Chester, PA

KeyStone Center, located in Chester, Pennsylvania, offers substance use disorder and dual diagnosis treatment for adults. We believe that each patient who walks through our front door is unique. Each experience that a person has shapes their behavior. Our common goal at KeyStone is to treat the patient with a holistic approach of mind, body and spirit. Our philosophy is intensity of service with a true patient focus.



Why KeyStone Center?

We operate a competency-based program that utilizes evidence-based practices and the patient’s strengths to promote recovery. We believe in providing the highest quality of treatment services available for long term healing and improved quality of life. Although there are common themes that might affect all people who struggle with addiction, each client’s concerns are unique. It is for this reason that we conceptualize our clients through the Stages-of-Change model and tailor treatment to meet each person where they are at in the change process. In addition, this allows us to change our therapeutic approach to best serve our clients.

Our trained staff members use evidence-based treatment methods to help you or your loved one who may be struggling with addiction to drugs or alcohol.

KeyStone Center Offers

  • Inpatient treatment
  • Drug and alcohol detox
  • Partial hospitalization program (PHP)
  • Intensive outpatient program (IOP)
  • Adolescent outpatient treatment
  • Enhanced illness management and recovery
  • Psychiatric services
  • Co-occurring mental health treatment
  • Sex addiction treatment

KeyStone Center

2001 Providence Ave
Chester, PA 19013

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About Our Location

The main building at KeyStone Center, a Victorian mansion built in 1891, is the main focal point of our estate, which boasts tree-lined grounds and an expansive campus listed on the Historic Register in Delaware County, Pennsylvania. We are located five miles south of the Philadelphia Airport, making our facility an easy location to travel to and from, for out-of-state treatment options and visitors.

Treatment Options

Levels of Care

  • Medically supervised detox
  • Inpatient treatment
  • Partial hospitalization program (PHP)
  • Intensive outpatient program (IOP)

Types of Therapy

  • Cognitive-behavioral therapy (CBT)
  • Dialectical behavior therapy (DBT)
  • Medication-assisted treatment (MAT)
  • Family therapy
  • Group therapy

Other Services

  • Relapse prevention
  • Introduction to the 12 steps
  • Stages of change
  • Medication management
  • Mental health symptoms management
  • Anger management/coping skills
  • Relaxation techniques/mindfulness
  • Motivational interviewing
  • Yoga

Meet the CEO


Elizabeth Conlin


Beth started in healthcare in 1994 and has experience running the performance improvement, risk management, and compliance departments in behavioral health treatment facilities.

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