2027 · County prescription coverage guides

2027 Medicare prescription coverage by county

Compare selected exact prescriptions across local Medicare Advantage plans with Part D. Each county guide shows the full local plan list, drug tiers and reported coverage restrictions.

CMS coverage checked October 15, 2026 · 9 counties in 9 states

Browse county guides Search any county in the interactive lookup

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Each guide includes metformin 500 mg, Eliquis 5 mg, Wegovy 2.4 mg/0.75 mL, finasteride 1 mg and a metformin-plus-Eliquis comparison. Other strengths, forms and brands require a separate check.

How these counties were selected

After Los Angeles, we selected the county with the most Part D enrollees in each of eight additional states, working down CMS’s national county enrollment ranking. This adds counties across the Pacific Northwest, Southwest, Midwest, South and Northeast; all eight additions are among the top 16 counties nationally in this report.

The selection uses CMS Medicare Monthly Enrollment for June 2026, published September 23, 2026 and checked October 15, 2026. Part D totals combine MA-PD and standalone PDP enrollment, including people outside these guides’ general-enrollment MA-PD scope. Enrollment is a measure of coverage, not prescription fills, medication utilization or projected 2027 enrollment.

Download the selected county enrollment counts or read the selection method and source dates. CMS provides the original report and enrollment methodology.

What the comparisons show

Each page includes all general-enrollment MA-PD listings for that county in the September 2026 landscape. SNPs, standalone Part D plans and plans without Part D are outside the comparison. A product listing can still require prior authorization or have other conditions. Missing or suppressed coverage data remains labeled as unavailable.

Pharmacy networks and medication cost estimates are not included. Confirm current coverage, covered use and enrollment availability with Medicare Plan Finder or the plan before making a coverage decision.