Frequencies for first 10,000 rows of organizationname variable in ma2008 dataset : Organization Name | Freq. Percent Cum. ----------------------------------------+----------------------------------- | 6 0.06 0.06 Advantra® Freedom | 352 3.52 3.58 Advantra® Savings | 40 0.40 3.98 Aetna Medicare | 33 0.33 4.31 Blue Advantage (PPO) | 316 3.16 7.47 Blue Cross Blue Shield of Alabama | 986 9.86 17.33 Blue Cross and Blue Shield of Alabama | 474 4.74 22.07 BlueRx | 10 0.10 22.17 BlueRx (PDP) | 4 0.04 22.21 Bravo Health | 2 0.02 22.23 Bravo Health Insurance Company | 1 0.01 22.24 CIGNA Medicare Access | 412 4.12 26.36 CIGNA Medicare Rx | 10 0.10 26.46 Care Improvement Plus | 24 0.24 26.70 Cigna Medicare Rx | 5 0.05 26.75 Cigna-HealthSpring | 197 1.97 28.72 Cigna-HealthSpring Rx | 3 0.03 28.75 Community CCRx PDP | 2 0.02 28.77 Coventry AdvantraRx | 6 0.06 28.83 DaVita VillageHealth Insurance of Ala.. | 1 0.01 28.84 EnvisionRx Plus | 12 0.12 28.96 Express Scripts Medicare | 6 0.06 29.02 First Health Part D | 17 0.17 29.19 Fresenius Medical Care Health Plan | 10 0.10 29.29 Health Net | 8 0.08 29.37 HealthMarkets Care Assured | 52 0.52 29.89 HealthMarkets Medicare | 2 0.02 29.91 HealthSpring Prescription Drug Plan | 5 0.05 29.96 Healthspring of Alabama, Inc. | 646 6.46 36.42 Humana Benefit Plan of Illinois, Inc. | 8 0.08 36.50 Humana Health Plan, Inc | 26 0.26 36.76 Humana Health Plan, Inc. | 146 1.46 38.22 Humana Insurance Company | 2,290 22.90 61.12 Medco Medicare Prescription Plan | 10 0.10 61.22 Mercy LIFE of Alabama | 12 0.12 61.34 Pennsylvania Life Insurance Company | 3 0.03 61.37 RxAmerica | 5 0.05 61.42 SecureHorizons MedicareDirect | 92 0.92 62.34 SecureHorizons by UnitedHealthcare | 240 2.40 64.74 Sierra Health and Life Insurance Comp.. | 1 0.01 64.75 SilverScript | 5 0.05 64.80 SilverScript Insurance Company | 10 0.10 64.90 Sterling Life Insurance Company | 111 1.11 66.01 Stonebridge Life Insurance Company | 4 0.04 66.05 Symphonix Health | 3 0.03 66.08 Today's Options | 348 3.48 69.56 Today's Options Powered by CCRx | 342 3.42 72.98 UniCare | 68 0.68 73.66 Unicare Life & Health Ins. Company | 342 3.42 77.08 United American Insurance Company | 14 0.14 77.22 UnitedHealthcare | 218 2.18 79.40 Universal American | 711 7.11 86.51 VIVA Medicare | 250 2.50 89.01 VIVA Medicare Plus | 584 5.84 94.85 WellCare | 307 3.07 97.92 Windsor Medicare Extra | 202 2.02 99.94 Windsor Rx | 6 0.06 100.00 ----------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016