Patient engagement is an important aspect in improving patient outcomes. However, there is a paucity of literature regarding patient engagement in a nonresearch health care setting and the impacts of ambulatory clinical pharmacist interventions. Patient engagement has several definitions making it challenging to assess, but attendance to initial primary care provider (PCP) visits is an important aspect of patient engagement. The study objective was to assess if improved patient engagement, defined as attendance to an initial PCP visit, was associated with differences in services provided or pharmacist participation during postdischarge clinic appointments. The site of this study was the Johns Hopkins After Care Clinic (JHACC), an interdisciplinary postdischarge, safety net clinic in Baltimore, MD. Through an interdisciplinary health care team including pharmacists, patients received comprehensive care to assist with postacute disease-state management and transitions of care. Initial PCP visit attendance after a postacute visit in a high-risk population was evaluated for differing service delivery factors between groups who attended and did not attend their initial PCP visit. Descriptive statistics and chi-square tests were used for analysis. Patients were statistically significantly more likely to engage in primary care when clinical pharmacy specialists participated in their JHACC appointment (P = 0.02). Medication education and disease-state counseling improved initial PCP visit attendance, both of which are key pharmacist activities. This study suggests ambulatory clinical pharmacy specialists' roles in an interdisciplinary clinic model correlates with increased attendance to initial PCP visits, a surrogate for patient engagement. Disease-state education and medication education are both important activities in improving this measure; however, additional research is necessary to determine specific pharmacist interventions associated with patient engagement. As research in patient engagement continues, the positive effects of pharmacist involvement in this area could support their value in ambulatory care services.