Frequencies for first 10,000 rows of organizationname variable in ma2007 dataset : Organization Name | Freq. Percent Cum. ----------------------------------------+----------------------------------- Abrazo Advantage Health Plan | 1 0.01 0.01 AdvantageCare | 24 0.24 0.25 Advantra | 8 0.08 0.33 Advantra® Freedom | 529 5.29 5.62 Aetna Health Inc. | 9 0.09 5.71 Aetna Medicare | 76 0.76 6.47 AlohaCare | 1 0.01 6.48 America's Health Choice | 21 0.21 6.69 American Pioneer Healh Plans | 13 0.13 6.82 American Pioneer Life Insurance Company | 13 0.13 6.95 Anthem Blue Cross & Blue Shield | 6 0.06 7.01 Anthem Blue Cross and Blue Shield | 9 0.09 7.10 Anthem Insurance Companies, Inc. | 4 0.04 7.14 Arkansas Blue Cross - Medi-Pak Advan.. | 75 0.75 7.89 Arkansas Community Care, Inc. | 52 0.52 8.41 Arta Medicare Health Plan | 1 0.01 8.42 AvMed Medicare Preferred | 2 0.02 8.44 AvMed Medicare Preferred PPO | 2 0.02 8.46 BC LIFE & HEALTH INSURANCE COMPANY | 126 1.26 9.72 Blue Cross Blue Shield Healthcare Pla.. | 16 0.16 9.88 Blue Cross Blue Shield of Alabama | 76 0.76 10.64 Blue Cross Of California | 20 0.20 10.84 Blue Cross and Blue Shield of Florida | 4 0.04 10.88 Blue Cross of California | 68 0.68 11.56 Blue Shield of California | 7 0.07 11.63 Bravo by Elder Health | 3 0.03 11.66 CIGNA HealthCare for Seniors | 2 0.02 11.68 Capital Health Plan | 8 0.08 11.76 Care1st Medicare Advantage Plan | 4 0.04 11.80 CareMore Health Plan | 8 0.08 11.88 CarePlus Health Plans, Inc. | 10 0.10 11.98 Central Health Medicare Plan | 1 0.01 11.99 Chinese Community Health Plan | 1 0.01 12.00 Citizens Choice Healthplan | 2 0.02 12.02 Citrus Health Care, Inc. | 27 0.27 12.29 Denver Health Medical Plan | 1 0.01 12.30 Desert Canyon Community Care | 6 0.06 12.36 Doctorcare, Inc. | 2 0.02 12.38 Florida Health Care Plan, Inc. | 6 0.06 12.44 Freedom Health, Inc. | 20 0.20 12.64 Fresenius Medical Care Health Plan | 14 0.14 12.78 GEMCARE Health Plan | 1 0.01 12.79 HMSA's 65C Plus | 12 0.12 12.91 Health First Medicare Plans | 6 0.06 12.97 Health Net | 83 0.83 13.80 Health Net Life Insurance Company | 1 0.01 13.81 Health Net Of CA | 39 0.39 14.20 Health Net of Arizona, Inc. | 12 0.12 14.32 Health Net of Connecticut | 40 0.40 14.72 Health Options, Inc.\BCBSF | 3 0.03 14.75 HealthSun Health Plans, Inc. | 3 0.03 14.78 Healthspring of Alabama, Inc. | 99 0.99 15.77 Humana Health Insurance Company Of Fl.. | 2 0.02 15.79 Humana Health Plan, Inc. | 2 0.02 15.81 Humana Insurance Company | 1,593 15.93 31.74 Humana Medical Plan, Inc. | 42 0.42 32.16 InStil Health Insurance Company | 479 4.79 36.95 Instil Health Insurance Company | 54 0.54 37.49 Inter Valley Health Plan | 3 0.03 37.52 Kaiser Foundation Health Plan, Inc. (.. | 2 0.02 37.54 Kaiser Permanente | 69 0.69 38.23 Kaiser Permanente Senior Advantage | 12 0.12 38.35 Leon Medical Centers Health, Inc. | 1 0.01 38.36 Medcore HP | 2 0.02 38.38 MediSun Private Fee For Service | 1 0.01 38.39 Medica HealthCare Plans, Inc. | 4 0.04 38.43 Optimum HealthCare, Inc. | 4 0.04 38.47 PartnerCare Golden Advocate Plan | 64 0.64 39.11 Physicians United Plan | 14 0.14 39.25 Preferred Care Partners, Inc. | 3 0.03 39.28 Quality Health Plans, Inc. | 92 0.92 40.20 Rocky Mountain Health Plans | 372 3.72 43.92 SCAN Health Plan | 4 0.04 43.96 Secure Horizons Medicare Advantage Plan | 105 1.05 45.01 SecureHorizons | 238 2.38 47.39 SecureHorizons MedicareDirect | 243 2.43 49.82 Sierra Optima | 693 6.93 56.75 Sierra Spectrum | 3 0.03 56.78 Southeast Community Care | 10 0.10 56.88 Sterling Life Insurance Company | 537 5.37 62.25 Summit Health Plan, Inc. | 10 0.10 62.35 Sun Health MediSunONE | 1 0.01 62.36 SunCoast Physicians Health Plan, Inc | 3 0.03 62.39 Today's Option | 1,784 17.84 80.23 UniCare | 245 2.45 82.68 Unicare Life & Health Ins. Company | 709 7.09 89.77 United Healthcare Insurance Company | 4 0.04 89.81 Universal Health Care Insurance Compa.. | 241 2.41 92.22 Universal Health Care, Inc. | 89 0.89 93.11 VIVA Medicare Plus | 26 0.26 93.37 Vista Healthplan of South Florida, Inc. | 5 0.05 93.42 Vista Healthplan, Inc. | 8 0.08 93.50 WellCare | 620 6.20 99.70 Western Health Advantage | 3 0.03 99.73 Windsor Medicare Extra | 27 0.27 100.00 ----------------------------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016