Frequencies for companyname variable in pdp2010 dataset : Company Name | Freq. Percent Cum. ----------------------------------------+----------------------------------- Aetna Medicare | 153 6.35 6.35 Alliance Medicare Rx | 2 0.08 6.43 AmeriHealth Advantage | 2 0.08 6.51 AmeriHealth Rx | 4 0.17 6.68 Anthem Blue Cross Life and Health Ins.. | 3 0.12 6.80 Anthem Blue Cross and Blue Shield | 33 1.37 8.17 Arkansas Blue Cross - Medi-Pak Rx | 3 0.12 8.30 Asuris Northwest Health | 4 0.17 8.46 Avalon Insurance Company | 6 0.25 8.71 BLUE CROSS AND BLUE SHIELD OF NORTH C.. | 2 0.08 8.80 Bella Vista PharmaCare | 3 0.12 8.92 Blue Cross & Blue Shield of Rhode Isl.. | 3 0.12 9.05 Blue Cross Blue Shield of Georgia | 3 0.12 9.17 Blue Cross Blue Shield of Michigan | 2 0.08 9.25 Blue Cross Blue Shield of North Dakota | 3 0.12 9.38 Blue Cross Blue Shield of South Carol.. | 2 0.08 9.46 Blue Cross Blue Shield of Wyoming | 3 0.12 9.59 Blue Cross and Blue Shield of Alabama | 2 0.08 9.67 Blue Cross and Blue Shield of Florida.. | 3 0.12 9.79 Blue Cross and Blue Shield of Louisiana | 1 0.04 9.83 Blue Cross and Blue Shield of Massach.. | 3 0.12 9.96 Blue Cross and Blue Shield of Minnesota | 3 0.12 10.08 Blue Cross and Blue Shield of Montana | 3 0.12 10.21 Blue Cross and Blue Shield of Nebraska | 3 0.12 10.33 Blue Cross and Blue Shield of Vermont | 3 0.12 10.46 Blue MedicareRx | 3 0.12 10.58 Blue Shield of California | 2 0.08 10.66 BlueCross BlueShield of Tennessee | 2 0.08 10.75 Bravo Health Insurance Company | 44 1.83 12.57 CIGNA Medicare Rx | 153 6.35 18.92 Coventry AdvantraRx | 153 6.35 25.27 Dean Health Insurance, Inc. | 3 0.12 25.39 Educators Mutual Insurance Association | 4 0.17 25.56 EnvisionRx Plus | 100 4.15 29.71 First Health Part D | 102 4.23 33.94 First Medical Health Plan, Inc. | 2 0.08 34.02 First United American Life Insurance .. | 2 0.08 34.11 Fox Insurance Company | 27 1.12 35.23 GHI Medicare PDP | 1 0.04 35.27 Geisinger Gold | 2 0.08 35.35 HIP Medicare PDP | 2 0.08 35.44 HISC - BLUE CROSS AND BLUE SHIELD OF .. | 3 0.12 35.56 HISC - Blue Cross Blue Shield of Illi.. | 3 0.12 35.68 HISC - Blue Cross Blue Shield of New .. | 3 0.12 35.81 HISC - Blue Cross Blue Shield of Texas | 3 0.12 35.93 Health Net | 102 4.23 40.17 HealthNow New York Inc. | 1 0.04 40.21 HealthSpring Prescription Drug Plan | 51 2.12 42.32 Highmark Senior Resources Inc. | 6 0.25 42.57 Horizon Blue Cross Blue Shield of New.. | 2 0.08 42.66 Humana Insurance Company | 150 6.22 48.88 Humana Insurance Company of New York | 3 0.12 49.00 Humana Insurance of Puerto Rico, Inc | 2 0.08 49.09 MCS Classicare | 2 0.08 49.17 Medco Medicare Prescription Plan | 156 6.47 55.64 Medi-CareFirst BlueCross BlueShield | 6 0.25 55.89 Pharmacy Insurance Corporation of Ame.. | 3 0.12 56.02 Preferred Medicare Choice, Inc. | 3 0.12 56.14 Priority Health Medicare | 1 0.04 56.18 QUALITY HEALTH PLANS | 2 0.08 56.27 Regence Life and Health | 4 0.17 56.43 Rocky Mountain Health Plans | 1 0.04 56.47 RxAmerica | 102 4.23 60.71 Scott and White Health PlanTexas Rx P.. | 3 0.12 60.83 SilverScript Insurance Company | 156 6.47 67.30 Simply Prescriptions | 2 0.08 67.39 Sterling Life Insurance Company | 50 2.07 69.46 Triple-S Salud, Inc. | 2 0.08 69.54 Tufts Health Plan | 12 0.50 70.04 UNITED HEALTHCARE INSURANCE COMPANY | 7 0.29 70.33 UPMC Health Plan | 3 0.12 70.46 UniCare | 73 3.03 73.49 United American Insurance Company | 100 4.15 77.63 UnitedHealthcare | 168 6.97 84.61 Universal American | 257 10.66 95.27 WPS Health Insurance | 3 0.12 95.39 WellCare | 100 4.15 99.54 Wellmark Blue Cross Blue Shield of So.. | 3 0.12 99.67 Wellmark Blue Cross and Blue Shield o.. | 3 0.12 99.79 Windsor Rx | 5 0.21 100.00 ----------------------------------------+----------------------------------- Total | 2,410 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016