Frequencies for companyname variable in pdp2011 dataset : Company Name | Freq. Percent Cum. ----------------------------------------+----------------------------------- Alliance Medicare Rx | 1 0.07 0.07 AmeriHealth Advantage | 2 0.14 0.21 AmeriHealth Rx | 2 0.14 0.34 Anthem Blue Cross Life and Health Ins.. | 3 0.21 0.55 Anthem Blue Cross and Blue Shield | 32 2.21 2.76 Arkansas Blue Cross - Medi-Pak Rx | 2 0.14 2.90 Asuris Northwest Health | 4 0.28 3.17 Avalon Insurance Company | 4 0.28 3.45 Blue Cross & Blue Shield of Rhode Isl.. | 2 0.14 3.59 Blue Cross Blue Shield of Georgia | 3 0.21 3.79 Blue Cross Blue Shield of Michigan | 2 0.14 3.93 Blue Cross Blue Shield of North Dakota | 2 0.14 4.07 Blue Cross Blue Shield of South Carol.. | 2 0.14 4.21 Blue Cross Blue Shield of Wyoming | 2 0.14 4.34 Blue Cross and Blue Shield of Alabama | 2 0.14 4.48 Blue Cross and Blue Shield of Florida.. | 2 0.14 4.62 Blue Cross and Blue Shield of Louisiana | 1 0.07 4.69 Blue Cross and Blue Shield of Massach.. | 2 0.14 4.83 Blue Cross and Blue Shield of Minnesota | 2 0.14 4.97 Blue Cross and Blue Shield of Montana | 2 0.14 5.10 Blue Cross and Blue Shield of Nebraska | 2 0.14 5.24 Blue Cross and Blue Shield of North C.. | 2 0.14 5.38 Blue Cross and Blue Shield of Vermont | 2 0.14 5.52 Blue MedicareRx | 3 0.21 5.72 Blue Shield of California | 1 0.07 5.79 BlueCross BlueShield of Tennessee | 2 0.14 5.93 Bravo Health | 44 3.03 8.97 CIGNA Medicare Rx | 102 7.03 16.00 Educators Mutual Insurance Association | 4 0.28 16.28 EmblemHealth Medicare PDP | 1 0.07 16.34 EnvisionRx Plus | 102 7.03 23.38 First Health Part D | 102 7.03 30.41 First Medical Health Plan, Inc. | 2 0.14 30.55 First United American Life Insurance .. | 1 0.07 30.62 HISC - Blue Cross Blue Shield of Illi.. | 2 0.14 30.76 HISC - Blue Cross Blue Shield of New .. | 2 0.14 30.90 HISC - Blue Cross Blue Shield of Okla.. | 2 0.14 31.03 HISC - Blue Cross Blue Shield of Texas | 2 0.14 31.17 Health Alliance Medicare Prescription.. | 2 0.14 31.31 HealthNow New York Inc. | 1 0.07 31.38 HealthSpring Prescription Drug Plan | 51 3.52 34.90 Highmark Senior Resources Inc. | 4 0.28 35.17 Horizon Blue Cross Blue Shield of New.. | 2 0.14 35.31 Humana Insurance Company | 142 9.79 45.10 Humana Insurance Company of New York | 3 0.21 45.31 Humana Insurance of Puerto Rico, Inc | 2 0.14 45.45 MCS Classicare | 2 0.14 45.59 Medco Medicare Prescription Plan | 104 7.17 52.76 Medi-CareFirst BlueCross BlueShield | 6 0.41 53.17 PICA | 2 0.14 53.31 Preferred Medicare Choice, Inc. | 3 0.21 53.52 Priority Health Medicare | 1 0.07 53.59 Regence Life and Health | 4 0.28 53.86 RxAmerica | 51 3.52 57.38 SilverScript Insurance Company | 102 7.03 64.41 Simply Prescriptions | 2 0.14 64.55 Sterling Life Insurance Company | 50 3.45 68.00 SummaCare Secure | 2 0.14 68.14 Triple-S Salud, Inc. | 2 0.14 68.28 Tufts Health Plan Medicare Preferred | 8 0.55 68.83 UPMC Health Plan | 2 0.14 68.97 UniCare | 73 5.03 74.00 United American Insurance Company | 50 3.45 77.45 UnitedHealthcare | 112 7.72 85.17 Universal American | 104 7.17 92.34 WPS Health Insurance | 2 0.14 92.48 WellCare | 100 6.90 99.38 Wellmark Blue Cross Blue Shield of So.. | 2 0.14 99.52 Wellmark Blue Cross and Blue Shield o.. | 2 0.14 99.66 Windsor Rx | 5 0.34 100.00 ----------------------------------------+----------------------------------- Total | 1,450 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016