Michigan has the highest-concentrated commercial drug market in the country, an analysis from the American Medical Association published Oct. 13 found.
The study examined the market share pharmaceutical benefit management companies have on a state and city level. The analysis found 3 out of 4 states have highly concentrated PBM markets, and 4 out of 5 metropolitan areas had highly concentrated markets.
Here are the ten states where one PBM held the largest market shares:
1. Michigan
Express Scripts has 88 percent to 89 percent of commercial drug market
2. Alabama
PrimeTherapeutics has 86 percent of commercial drug market
3. South Carolina
OptumRx has 83 percent of commercial drug market
4. Delaware
Express Scripts has 78 percent of commercial drug market\
5. Vermont
Express Scripts has 76 percent to 77 percent of commercial drug market
6.Alaska (tied)
Express Scripts has 75 percent of commercial drug market
6. West Virginia (tied)
Express Scripts has 75 percent of commercial drug market
7. South Dakota
CVS/Caremark has between 73 percent and 74 percent of commercial drug market
8. Tennessee
Express Scripts has 73 percent of commercial drug market
9. Louisiana
Express Scripts has 71 percent of commercial drug market