Frequencies for first 10,000 rows of organizationname variable in ma2010 dataset : Organization Name | Freq. Percent Cum. ----------------------------------------+----------------------------------- | 6 0.06 0.06 ARKANSAS BLUE CROSS AND BLUE SHIELD | 132 1.32 1.38 Abrazo Advantage Health Plan | 58 0.58 1.96 Advantage by Bridgeway Health Solutions | 2 0.02 1.98 Advantage by Bridgeway Health Solutio.. | 5 0.05 2.03 Aetna Medicare | 66 0.66 2.69 Arcadian Health Plan | 12 0.12 2.81 Arkansas Blue Cross - Medi-Pak Rx | 2 0.02 2.83 Arkansas Blue Cross - Medi-Pak Advant.. | 69 0.69 3.52 Arkansas Community Care | 8 0.08 3.60 Arkansas Community Care, Inc. | 8 0.08 3.68 Banner MediSun | 28 0.28 3.96 Blue Advantage (PPO) | 360 3.60 7.56 Blue Cross Blue Shield of Alabama | 201 2.01 9.57 Blue Cross Blue Shield of Arizona Adv.. | 38 0.38 9.95 Blue Cross and Blue Shield of Alabama | 540 5.40 15.35 Blue Cross and Blue Shield of Arizona | 5 0.05 15.40 Blue MedicareRx | 1 0.01 15.41 BlueRx | 6 0.06 15.47 BlueRx (PDP) | 4 0.04 15.51 Bravo Health | 5 0.05 15.56 Bridgeway Health Solutions | 1 0.01 15.57 CIGNA HealthCare of Arizona | 18 0.18 15.75 CIGNA Medicare Access | 193 1.93 17.68 CIGNA Medicare Rx | 15 0.15 17.83 COVENTRY HEALTH CARE | 22 0.22 18.05 Care Improvement Plus | 451 4.51 22.56 Care1st+ | 2 0.02 22.58 CareMore Health Plan of Arizona, Inc. | 89 0.89 23.47 Cigna | 10 0.10 23.57 Cigna HealthCare of Arizona | 18 0.18 23.75 Cigna Medicare Rx | 19 0.19 23.94 Cigna-HealthSpring | 232 2.32 26.26 Cigna-HealthSpring Rx | 12 0.12 26.38 Community CCRx PDP | 8 0.08 26.46 Coventry Health Care | 20 0.20 26.66 Desert Canyon Community Care | 14 0.14 26.80 EnvisionRx Plus | 33 0.33 27.13 Evercare® by UnitedHealthcare | 3 0.03 27.16 Express Scripts Medicare | 23 0.23 27.39 First Health Part D | 49 0.49 27.88 Health Advantage | 6 0.06 27.94 Health Choice Generations | 14 0.14 28.08 Health Choice Generations HMO SNP | 45 0.45 28.53 Health Net | 16 0.16 28.69 Health Net of Arizona, Inc. | 171 1.71 30.40 HealthMarkets Medicare | 8 0.08 30.48 HealthSpring Prescription Drug Plan | 12 0.12 30.60 Healthspring of Alabama, Inc. | 450 4.50 35.10 Humana Benefit Plan of Illinois, Inc. | 8 0.08 35.18 Humana Health Plan, Inc | 25 0.25 35.43 Humana Health Plan, Inc. | 359 3.59 39.02 Humana Insurance Company | 2,769 27.69 66.71 Magellan Complete Care of Arizona | 3 0.03 66.74 Maricopa Care Advantage | 2 0.02 66.76 Medco Medicare Prescription Plan | 15 0.15 66.91 Mercy Care Advantage | 27 0.27 67.18 Mercy Health Plans | 8 0.08 67.26 Mercy LIFE of Alabama | 12 0.12 67.38 Mercy Maricopa Advantage | 2 0.02 67.40 ONECare by Care1st Health Plan Arizon.. | 5 0.05 67.45 Phoenix Health Plans | 33 0.33 67.78 RxAmerica | 4 0.04 67.82 SCAN Health Plan Arizona | 28 0.28 68.10 SecureHorizons by UnitedHealthcare | 174 1.74 69.84 SilverScript | 17 0.17 70.01 SilverScript Insurance Company | 15 0.15 70.16 Sterling Life Insurance Company | 126 1.26 71.42 Stonebridge Life Insurance Company | 16 0.16 71.58 Symphonix Health | 12 0.12 71.70 Tribute Health Plan of Arkansas | 5 0.05 71.75 UNIVERSAL HEALTH CARE INSURANCE COMPA.. | 149 1.49 73.24 UniCare | 26 0.26 73.50 Unicare Life & Health Ins. Company | 128 1.28 74.78 United American Insurance Company | 33 0.33 75.11 UnitedHealthcare | 397 3.97 79.08 UnitedHealthcare Community Plan | 80 0.80 79.88 Universal American | 409 4.09 83.97 Universal American Corp. | 147 1.47 85.44 Universal Health Care Insurance Compa.. | 30 0.30 85.74 University Care Advantage | 20 0.20 85.94 University Physicians/Maricopa Care A.. | 2 0.02 85.96 VIVA Medicare | 308 3.08 89.04 VIVA Medicare Plus | 424 4.24 93.28 WellCare | 88 0.88 94.16 Windsor Medicare Extra | 576 5.76 99.92 Windsor Rx | 8 0.08 100.00 ----------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016