| 'Ohana Health Plan |
| Access Medicare |
| ActiveSaver MSA or BlueSaver MSA |
| ADVANTAGE Health Solutions, Inc. |
| Aetna Medicare |
| Affinity Health Plan |
| AgeWell New York |
| Akamai Advantage by HMSA |
| Allegian Advantage |
| Alliance Medicare PPO |
| AlphaCare of New York, Inc. |
| Altius Health Plans |
| America's 1st Choice Health Plans, Inc. |
| America's 1st Choice of South Carolina |
| Amerigroup |
| Amerigroup Community Care of New Mexico |
| AmeriHealth 65 Preferred HMO |
| Amida Care |
| Anthem Blue Cross |
| Anthem Blue Cross and Blue Shield |
| Anthem Blue Cross Life and Health Insurance Co. |
| Anthem HealthKeepers |
| Arcadian Health Plan, Inc. |
| ARKANSAS BLUE CROSS AND BLUE SHIELD |
| Aspire Health Plan |
| Asuris Northwest Health |
| ATRIO Health Plans |
| AvMed Medicare |
| BCBS of WNY/BS of NENY/HealthNow New York Inc. |
| BeHealthy America, Inc. |
| Blue Advantage (PPO) |
| Blue Care Network |
| Blue Cross & Blue Shield of Rhode Island |
| Blue Cross and Blue Shield of IL, NM, OK |
| Blue Cross and Blue Shield of Minnesota |
| Blue Cross and Blue Shield of Montana |
| Blue Cross and Blue Shield of North Carolina |
| Blue Cross and Blue Shield of TX |
| Blue Cross Blue Shield Healthcare Plan of Georgia |
| Blue Cross Blue Shield of Arizona Advantage |
| Blue Cross Blue Shield of Georgia |
| Blue Cross Blue Shield of IL, NM |
| Blue Cross Blue Shield of Massachusetts |
| Blue Cross Blue Shield of Michigan |
| Blue Cross Blue Shield of OK |
| Blue Cross Blue Shield of Texas |
| Blue Cross of Idaho |
| Blue Shield of California |
| BlueChoice Tennessee |
| BlueCross BlueShield of Tennessee |
| Brand New Day |
| Capital Health Plan |
| Care Improvement Plus |
| Care N' Care Insurance Company |
| Care N? Care Insurance Company |
| Care1st Health Plan |
| CareMore Health Plan |
| CareMore Health Plan of Arizona, Inc. |
| CareMore Health Plan of Nevada |
| CareOregon Advantage |
| CarePlus Health Plans, Inc. |
| CarePoint Health Plans |
| CareSource |
| Cariten Health Plan Inc. |
| CDPHP Medicare Choices |
| Centers Plan for Healthy Living |
| Central Health Medicare Plan |
| CHA HMO, Inc. |
| Chinese Community Health Plan |
| CHRISTUS Health Plan Generations |
| Cigna |
| Cigna-HealthSpring |
| Citizens Choice Health Plan |
| ClearRiver Health |
| Colorado Access Advantage |
| Colorado Choice Health Plans |
| Community Care Alliance of Illinois, NFP |
| Community HealthFirst Medicare Advantage Plan |
| CommunityCare Senior Health Plan (HMO) |
| ConnectiCare, Inc. |
| Constellation Health |
| Coventry Health Care |
| Coventry Health Care of Illinois, Inc. |
| Coventry Health Care of Missouri, Inc. |
| CrestPoint Health Insurance Company |
| Dean Health Plan, Inc. |
| Denver Health Medical Plan, Inc. |
| Easy Choice Health Plan |
| EASY CHOICE HEALTH PLAN OF NEW YORK |
| Elderplan |
| EmblemHealth Medicare HMO |
| EmblemHealth Medicare PPO |
| Empire BlueCross BlueShield |
| Erickson Advantage |
| Essence Healthcare |
| Excellus Health Plan, Inc |
| Fallon Health |
| FamilyCare Health Plans, Inc. |
| Fidelis Care |
| Fidelis SecureCare Of Michigan |
| First Medical Health Plan, Inc. |
| FirstCare Advantage |
| FirstCarolinaCare Insurance Company |
| Florida Blue |
| Florida Blue HMO |
| Florida Health Care Plan, Inc. |
| FLORIDA HEALTHCARE PLUS |
| Freedom Health, Inc. |
| Gateway Health Medicare Assured |
| Geisinger Gold |
| GEMCARE Health Plan |
| GLOBALHEALTH MEDICARE |
| Group Health Cooperative |
| Group Health Options, Inc. |
| Gundersen Health Plan Minnesota |
| Gundersen Health Plan, Inc. |
| HAP Senior Plus |
| Harbor Advantage |
| Harvard Pilgrim Health Care of New England, Inc. |
| Harvard Pilgrim Health Care, Inc. |
| Health Advantage |
| Health Alliance Medical Plans |
| Health Alliance Medicare |
| Health First Health Plans, Inc. |
| Health Net Health Plan of Oregon, Inc. |
| Health Net Life Insurance Company |
| Health Net of Arizona, Inc. |
| Health Net of California |
| Health Partners Medicare |
| Health Plan of Nevada, Inc. |
| Health Plan SecureChoice |
| HealthAmerica |
| Healthfirst Medicare Plan |
| HealthPartners |
| HealthPlus |
| HealthPlus Amerigroup |
| HealthPlus of Michigan |
| HealthSpan |
| HealthSpring of Florida, Inc. |
| HealthSun Health Plans, Inc. |
| HeartlandPlains Health |
| Highmark Health Insurance Company |
| Highmark Inc. |
| HNE Medicare Advantage Plans |
| Horizon Blue Cross Blue Shield of New Jersey |
| Humana Benefit Plan of Illinois, Inc. |
| Humana Employers Health Plan of Georgia, Inc. |
| Humana Health Benefit Plan of Louisiana, Inc. |
| Humana Health Company of New York, Inc. |
| Humana Health Insurance Company of Florida, Inc. |
| Humana Health Plan of California, Inc. |
| Humana Health Plan of Ohio, Inc. |
| HUMANA HEALTH PLAN OF TEXAS, INC. |
| Humana Health Plan, Inc. |
| HUMANA HEALTH PLANS OF PUERTO RICO, INC. |
| Humana Insurance Company |
| Humana Insurance Company of New York |
| Humana Insurance of Puerto Rico, Inc. |
| Humana Medical Plan of Michigan, Inc. |
| Humana Medical Plan of Pennsylvania, Inc. |
| Humana Medical Plan of Utah, Inc. |
| Humana Medical Plan, Inc. |
| Humana Regional Health Plan, Inc. |
| Humana WI Health Organization Insurance Corp |
| Independent Health |
| Indiana University Health Plans - Medicare |
| Inter Valley Health Plan |
| Kaiser Permanente |
| KelseyCare Advantage |
| Keystone 65 HMO |
| Keystone Health Plan West, Inc. |
| Liberty Health Advantage |
| Lovelace Medicare Plan |
| Lovelace Medicare Plan provided by BCBSNM |
| Martin's Point Generations Advantage |
| McLarenAdvantage |
| MCS Classicare |
| Medica HealthCare Plans, Inc. |
| Medica Insurance Company |
| Medical Associates Clinic Health Plan of Wisconsi |
| Medical Associates Health Plan, Inc. |
| Medicare y Mucho M?s |
| MediGold |
| MedStar Family Choice, Inc |
| Memorial Hermann Health Insurance Company |
| Memorial Hermann Health Plan, Inc. |
| Meridian Health Plan |
| MetroPlus Health Plan |
| MODA Health Plan, Inc. |
| Molina Healthcare of Utah |
| MVP HEALTH CARE |
| Network Health Medicare Advantage Plans |
| New West Health Services |
| North County Select |
| Optima Health Plan |
| Optimum HealthCare, Inc. |
| PacificSource Medicare |
| Paramount Elite |
| Peoples Health |
| Personal Choice 65 PPO |
| Phoenix Health Plans |
| PHYSICIANS HEALTH CHOICE |
| Piedmont Medicare Advantage |
| Piedmont WellStar HealthPlans |
| PMC Medicare Choice |
| Preferred Care Partners, Inc. |
| Premera Blue Cross Medicare Advantage |
| Premier Health Plan |
| Presbyterian MediCare PPO |
| Presbyterian Senior Care (HMO) |
| PrimeTime Health Plan |
| Priority Health Medicare |
| Prominence Health Plan |
| Providence Health Plans |
| QUALITY HEALTH PLANS |
| Regence BlueCross BlueShield of Oregon |
| Regence BlueCross BlueShield of Utah |
| Regence BlueShield |
| Regence BlueShield Of Idaho |
| RiverLink Health |
| Rocky Mountain Health Plans |
| Samaritan Advantage Health Plan |
| SCAN Health Plan |
| SCAN Health Plan Arizona |
| Scott and White Health Plan SeniorCare |
| SecureHorizons by UnitedHealthcare |
| Security Health Plan of Wisconsin, Inc. |
| SelectHealth |
| Senior Care Plus |
| Sierra Health and Life Insurance Company, Inc. |
| Simply Healthcare Plans, Inc. |
| Soundpath Health |
| StableView Health |
| The Health Plan |
| Touchstone Health |
| Trillium Advantage |
| Triple S Advantage |
| Tufts Health Plan or Tufts Medicare Preferred |
| UCare |
| Ultimate Health Plans |
| UnitedHealthcare |
| Universal American Corp. |
| University Health Care Advantage |
| UPMC Health Plan |
| Upper Peninsula Health Plan |
| Vantage Health Plan, Inc. |
| Vital Traditions |
| VIVA Medicare |
| VNSNY CHOICE Medicare |
| WellCare |
