Medicare Market Share: Drug Plan Starts With Big Four

Pharmaceutical manufacturers interested in maximizing their market share under the new Medicare drug benefit in 2006 should focus on four insurers likely to take the lion's share of enrollment. Dozens of plans are entering the market, but UnitedHealth Group, Wellpoint, Humana and Wellcare will start with a big edge in enrollment as of January 1. An analysis by The RPM Report explains why.