Medications and pharmacy services are critical to post-acute care (PAC) in skilled nursing facilities (SNFs), yet little is known about the long-term care (LTC) pharmacies that provide them. We estimated the market shares of LTC pharmacies and how SNFs differed between pharmacies. This cross-sectional study used data from SNFs that provided PAC services in Rhode Island (RI) in 2019. We applied the parametric g-formula to compare SNF pharmacy-related deficiencies and medication use measures between LTC pharmacies while standardizing for SNF membership in a chain and number of beds. Among 75 SNFs, 68 (91%) were served by either Omnicare (n = 32, 43%) or PharMerica (n = 36, 48%), and 7 (9%) by other LTC pharmacies. After covariate adjustment, PharMerica SNFs had the lowest prevalences of any pharmacy-related deficiency (PharMerica, 63.2%; Omnicare, 80.2%; other LTC pharmacy, 69.1%) and antianxiety medication use (PharMerica, 9.7%; Omnicare, 13.6%; other LTC pharmacy, 13.5%), but estimates were imprecise. The RI market is highly concentrated between LTC pharmacies. If similarly high LTC pharmacy market concentration exists nationally, there is enormous promise for efficiently delivering interventions to improve medication management in SNFs. However, it may also present a risk of harm if policies do not maintain sufficient competition and innovation is stifled.
Keywords: Marketing of health services; nursing homes; pharmacists; pharmacy; post-acute care; skilled nursing facilities.
Little is known about long-term care pharmacies serving skilled nursing facilitiesThese pharmacies may have a strong influence on quality of care and outcomesTwo pharmacies dominate 91% of the Rhode Island skilled nursing facility marketSkilled beds, pharmacy deficiencies, and medication use may differ by pharmacyPharmacy market concentration creates opportunities for both big benefits and harms.