Missouri
Medicare Migraine Prescribing Gap Report
84.6%
of primary care physicians actively prescribing triptans to Medicare patients in Missouri have never prescribed a CGRP medication
How Missouri compares
Missouri's 84.6% gap is 5.8 points below the national average of 90.4%. 435 of 514 primary care physicians with an active Medicare migraine patient panel have never written a CGRP prescription.
Metro breakdown
About the data
Based on CMS Medicare Part D prescribing data — the only publicly available provider-level prescribing dataset in the United States. Active prescriber = 20+ triptan claims in the observation period. Medicare patients represent a subset of the total migraine population; the true gap is likely larger. Full methodology →
What drives the gap
Prior authorization burden is the primary structural explanation for this gap. The Headache Vault's PA Engine helps primary care physicians navigate CGRP prior authorizations in Missouri and all 50 states — free for all clinicians.
Try the PA Engine →Citation
Doty A. Migraine Prescribing Gap in Missouri. The Headache Vault; 2026. Available at: https://headachevault.com/research/prescribing-gap/missouri/ Licensed CC BY 4.0. Data: CMS Medicare Part D Prescriber Public Use Files, 2022-2023.