Mapping Buprenorphine Access at Philadelphia Pharmacies

Objectives: Buprenorphine is not reliably stocked in many pharmacies, and pharmacy-level barriers may deter patients from opioid use disorder care. We surveyed all outpatient pharmacies in Philadelphia to describe variation in buprenorphine access and developed a map application to aid in identifying pharmacies that stock the medication.

Methods: Using a dataset from the Bureau of Professional and Occupational Affairs, we conducted a telephone survey of operating outpatient pharmacies (N = 422) about their buprenorphine stocking and dispensing practices. We used ArcGIS Pro 3.0.3 to join US Census Bureau ZIP code-level race and ethnicity data, conduct descriptive analyses, and create a map application.

Results: We collected data from 351 pharmacies (83% response rate). Two hundred thirty-eight pharmacies (68%) indicated that they regularly stock buprenorphine; 6 (2%) would order it when a prescription is sent. Ninety-one (26%) said that they do not stock or order buprenorphine, and 16 (5%) were unsure. We identified 137 "easier access" pharmacies (39%), meaning they regularly stock buprenorphine, dispense to new patients, and have no dosage maximums. Zip codes with predominantly White residents had a median (interquartile range) of 3 (2-4) "easier access" pharmacies, and those with predominantly Black residents a median (interquartile range) of 2 (1-4.5). Nine zip codes had no "easier access" pharmacies, and 3 had only one; these 3 zip codes are areas with predominantly Black residents.

Conclusions: Buprenorphine access is not equitable across Philadelphia and a quarter of pharmacies choose not to carry the medication. Our map application may be used to identify pharmacies in Philadelphia that stock buprenorphine.