Frequencies for first 10,000 rows of organizationname variable in planreport2013 dataset : Organization Name | Freq. Percent Cum. ----------------------------------------+----------------------------------- | 6 0.06 0.06 ARKANSAS BLUE CROSS AND BLUE SHIELD | 673 6.73 6.79 Abrazo Advantage Health Plan | 44 0.44 7.23 Advantage by Bridgeway Health Solutio.. | 2 0.02 7.25 Aetna Medicare | 48 0.48 7.73 Arkansas Community Care/ Texarkana Co.. | 18 0.18 7.91 Blue Advantage (PPO) | 360 3.60 11.51 Blue Cross Blue Shield of Arizona Adv.. | 38 0.38 11.89 Blue Cross and Blue Shield of Alabama | 180 1.80 13.69 Blue Cross and Blue Shield of Arizona | 5 0.05 13.74 Blue MedicareRx | 9 0.09 13.83 Blue Shield of California | 6 0.06 13.89 BlueRx | 2 0.02 13.91 BlueRx (PDP) | 4 0.04 13.95 Bridgeway Health Solutions | 1 0.01 13.96 COVENTRY HEALTH CARE | 62 0.62 14.58 Care Improvement Plus | 1,732 17.32 31.90 Care1st+ | 2 0.02 31.92 CareMore Health Plan | 4 0.04 31.96 CareMore Health Plan of Arizona, Inc. | 54 0.54 32.50 Cigna | 10 0.10 32.60 Cigna HealthCare of Arizona | 18 0.18 32.78 Cigna Medicare Rx | 23 0.23 33.01 Cigna-HealthSpring | 295 2.95 35.96 Cigna-HealthSpring Rx | 15 0.15 36.11 Coventry Health Care | 94 0.94 37.05 Desert Canyon Community Care | 4 0.04 37.09 EnvisionRx Plus | 21 0.21 37.30 Express Scripts Medicare | 29 0.29 37.59 First Health Part D | 38 0.38 37.97 Health Advantage | 14 0.14 38.11 Health Choice Generations HMO SNP | 31 0.31 38.42 Health Net of Arizona, Inc. | 100 1.00 39.42 HealthMarkets Medicare | 10 0.10 39.52 HealthSpring Prescription Drug Plan | 5 0.05 39.57 Healthspring of Alabama, Inc. | 144 1.44 41.01 Humana Benefit Plan of Illinois, Inc. | 8 0.08 41.09 Humana Health Plan of California, Inc. | 16 0.16 41.25 Humana Health Plan, Inc. | 583 5.83 47.08 Humana Insurance Company | 2,832 28.32 75.40 Kaiser Permanente | 12 0.12 75.52 Magellan Complete Care of Arizona | 3 0.03 75.55 Maricopa Care Advantage | 2 0.02 75.57 Mercy Care Advantage | 21 0.21 75.78 Mercy LIFE of Alabama | 12 0.12 75.90 Mercy Maricopa Advantage | 2 0.02 75.92 ONECare by Care1st Health Plan Arizon.. | 3 0.03 75.95 Phoenix Health Plans | 33 0.33 76.28 SCAN Health Plan Arizona | 17 0.17 76.45 SilverScript | 22 0.22 76.67 Stonebridge Life Insurance Company | 20 0.20 76.87 Symphonix Health | 15 0.15 77.02 Total Life Healthcare | 42 0.42 77.44 Tribute Health Plan of Arkansas | 30 0.30 77.74 UNIVERSAL HEALTH CARE INSURANCE COMPA.. | 24 0.24 77.98 UniCare | 10 0.10 78.08 United American Insurance Company | 30 0.30 78.38 UnitedHealthcare | 323 3.23 81.61 UnitedHealthcare Community Plan | 52 0.52 82.13 Universal American Corp. | 162 1.62 83.75 Universal Health Care Insurance Compa.. | 9 0.09 83.84 University Care Advantage | 15 0.15 83.99 VIVA Medicare | 308 3.08 87.07 VIVA Medicare Plus | 126 1.26 88.33 WellCare | 226 2.26 90.59 Windsor Medicare Extra | 937 9.37 99.96 Windsor Rx | 4 0.04 100.00 ----------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016