An Effectiveness Study of a Primary Care-embedded Clinical Pharmacist-Led Intervention Among Patients With Diabetes and Medicaid Coverage

Abstract

Objective Examine the impact of a primary care-embedded clinical pharmacist-led intervention (UCMyRx) on hemoglobin A1C and blood pressure control, relative to usual care, among patients with Type 2 diabetes (TD2) and Medicaid, in a large healthcare system. Methods We used data extracted from the Electronic Health Records system and a Difference-In-Differences study design with a 2:1 propensity-matched comparison group to evaluate the impact of UCMyRx on HbA1c and systolic blood pressure among patients with TD2 and Medicaid, relative to usual care. Results Having at least one UCMyRx clinical pharmacist visit was associated with a significant reduction in HbA1c; (−.27%, P-value= .03) but no impact on SBP. We do not find differential UCMyRx effects on HbA1c or SBP among the subpopulations with baseline HbA1C ≥9% or SBP ≥150 mmHg, respectively. In Charlson Comorbidity Index (CCI)-stratified analyses we found stronger UCMyRx effects on HbA1C (−.47%, P-value< .02) among the CCI tercile with the lowest comorbidity score (CC1 ≤ 5). Significant UCMyRx effects are only observed among the subpopulation of Medicaid beneficiaries without Medicare (−.35%, P-value= .02). Conclusions The UCMyRx intervention is a useful strategy for improving HbA1c control among patients with TD2 and Medicaid.