Healthcare Center


The Arc Mercer’s Healthcare Center is Greater Mercer County’s only health facility providing premier special needs care. In spring of 2017, the Healthcare Center relocated to a more spacious facility, which features two exam rooms, a group therapy room, an individual therapy room and a lab. Types of care and services available at the center include acute, annual physicals, behavioral supports, EKGs, podiatry, gynecological, psychiatric care and individual, family and group counseling. The Healthcare Center’s new location is at 3131 Princeton Pike, Building 5, Suite 109 in Lawrenceville, NJ. 08648. The phone number is 609-989-9211.

Primary Care Services

Our primary care physicians coordinate care among multiple specialists in treating patients with complex medical problems. This has resulted in outstanding outcomes including a dramatic decrease emergency room visits and unscheduled hospitalizations for our patients. We provide care in a relaxed, comfortable environment helps the patient feel at ease.

Mental Health Services

Two behavioral specialists create individual behavioral plans that help consumers reach their highest possible level of achievement. Mental health services, including psychiatric care and on-site individual, group, and family therapy are provided by Dr. Caroline Diao and Monica Quaste, MS, LPC. These services help present our consumers with new opportunities to develop the skills needed to express their wants, needs, and desires in a healthy, constructive manner. It has also led to a decrease in the use of psychiatric medications as well as admissions to a crisis center. This is in part due to the use of Pharmacogenetic Testing, which enables the psychiatrist to determine the right drug and right dose of medication for the patient and minimizes trial and error prescribing; potentially shortening the time it takes for patients to feel better. To learn more about: Pharmacogenetic Testing


The Arc Mercer Health Care Center officially opened its doors to the Mercer County Community on June 8, 2011 with the vision to provide people with developmental disabilities both primary and mental health care services. The Arc Mercer Health Care Center staff brings a combined 30 years’ experience providing exceptional care to people with developmental disabilities. This is done through the collaboration of care provided by our Primary Care Physicians Michelle Tomlinson D.O. Catherine Schiano D.O. and our Mental Health Staff, Dr. Caroline Diao and Monica Quaste MS-LPC.