- SA Recycling LLCJ1728
- Safeco Insurance24740
- Safety-Kleen CorporationJ1103
- Sagamore Health Network35164
- Sage Technologies37105
- Saint Johns Health ClinicSJHC1
- Saint Joseph Heritage HealthcareSTJOE
- Saint Louis CountyJ1658
- Salt Lake City CorporationJ1730
- Salvasen HealthCB122
- Samaritan AdvantageSAMAD
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- Samaritan GivenSM325
- Samaritan Health PlansSAMCP
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- SAMBA37259
- Samera Health U8053
- San Bernardino City Unified School DistrictJ1741
- San Diego Community College District CaliforniaJ1638
- San Diego County (Ryan White Care Act)MSO33
- San Diego County Medical Services (County Medical Services)MSO11
- San Diego County Physician Emergency ServicesMSO22
- San Diego PACE96400
- San Diego Physicians Medical GroupSCP01
- San Francisco Health PlanSFHP1
- San Francisco Municipal Transportation AgencyJ1886
- Sana Benefits50114
- Sandhills Center14816
- Sanford Health Plan91184
- Sanford Health Plan Medicare AdvantageRP035
- Sansum Clinic IPASAN01
- Santa Barbara SelectSBIPA
- Santa Clara County Independent Practice Association Health Maintenance Organization10378
- Santa Clara County IPA PPOSCACO
- Santa Clara Family Health Plan10876
- Santa Clara Valley Transportation AuthorityJ1518
- Santa Monica Unite Here Health Benefit PlanDBA02
- Sante Community Medical CentersSNTCC
- Sante HealthSANTE
- Sante Health SystemSNTMC
- Sante Health System and Affiliates77038
- Saudi Health MissionSHM01
- Savannah Business Group68423
- SBMASBMCO
- SCAN Health PlanSPSCN
- SCAN Health Plan Arizona73172
- Schaller Anderson Aetna Medicaid Texas and CHIPTMDSA
- Schaller Anderson Mercy CareAEMED
- Schaller Anderson Texas ChristusTXCSA
- Schlumberger TechnologyJ1104
- Schnuck Market IncorporatedJ1560
- SCHS Alta Global Medical Care GroupMPM54
- Scippa - VHP Covered CAREVHPCA
- Scotts Miracle-Gro CompanyJ1049
- Scripps Health PlanSHPM1
- Scripps Health Plan ServicesSHPS1
- SeaBrightJ1499
- Seaview IPASVIPA
- SECUR Health PlanSECUR
- Secure Health Plans of Georgia10883
- SecureOne86242
- Security Administrative Services35202
- Security Health Plan39045
- Security Life Insurance Company of AmericaTLX77
- Sedgwick11001T
- SedgwickWX867
- Sedgwick Cargill IncorporatedJ1661
- Sedgwick Claims Management ServicesTP097
- SEIU Local 1 Cleveland Welfare Fund20618
- Select Administrative Services64088
- Select Energy ServicesJ1937
- Select HealthSX107
- Select Staffing KoosharemJ1446
- SelectCare Texas (Houston)10930
- Selective12572
- Selective Insurance (Work Comp)WB653
- Selective Insurance Company of AmericaC1077
- Self Fund HealthSFH48
- Self Funded Plans34131
- Self Insured Benefit Administrators59111
- Self-Insured Schools of CaliforniaJ1520
- SelmanCo52214
- SelmanCo12274
- Sempra Energy Employee Care ServicesJ1915
- Sendero Health PlansMV440
- Senior Care Action Network Health Plan ArizonaSCAN2
- Senior Care Partners PACER3496
- Senior CommUnity Care PACEVNSPC
- Senior Network Health15682
- Senior Whole HealthSWHMA
- Senior Whole Health of New YorkSWHNY
- Sentara Health Plans54154
- Sentara PACESENT1
- Sentinel Security Life87020
- Sentry Asset Management64068
- Sentry AutoC1033
- Sentry InsuranceJ1417
- Seoul Medical GroupAMM07
- Sequoia Health IPAAGL01
- Sequoia Health Plan (Tulare-Kings County)IP085
- Service Lloyds Insurance CompanyJ1593
- Seton Health Plan (Children's Health Insurance Program)SHPCH
- Seton StarSTAR1
- Seven Corners25404
- SFM Mutual Insurance CompanyJ1553
- SGIC11789
- SGRX29094
- Share HealthCare52876
- Shared Health MississippiSHMS1
- Sharp Health Plan10967
- Sharp Health PlanSCMG1
- Sharp Rees-Stealy Medical GroupSRS83
- Shasta Administrative Services75280
- Shaw's Star MarketJ1468
- Sheet Metal Workers81778
- Shenandoah Life Insurance10752
- Show Me Health Administrators98578
- Sidecar HealthSDCAR
- Sieba03699
- SIHO Insurance Services77153
- SIHRTE77871
- Silver Cross Managed Care OrganizationNASCR
- Silver Eel TechSETMBR
- Silver Star97691
- SilverSummit HealthPlan11229
- SimplePay Health27905
- Simplified Benefits Administrators89789
- Simply Healthcare
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- Simpra AdvantageSIM02
- SISCO00540
- SISCO42150
- SISCO (Worker's Compensation)J1898
- Skai Blue Cross Blue ShieldBSKAI
- SkygenSCION
- SkygenSDCOM
- Smart and FinalJ1824
- Snap-on IncorporatedJ1105
- Snedeker Risk ManagementA7637
- SolarteHealthSLRT1
- Solidarity HealthShare77721
- Solis Health PlansSOLIS
- Solstice76578
- Solvay America IncorporatedJ1106
- SOMOS Innovation (Emblem Health)81336
- SOMOS Innovation (Empire BCBS)81508
- Sonder Health PlansA0339
- Sonic Automotive IncorporatedJ1381
- South Atlantic Medical GroupSAMG1
- South Coast Area Transit (California)J1731
- South Country Health Alliance81600
- South Dakota All Women CountSDAWC
- South Dakota Medicaid - STARSSTARS
- South Florida Musculoskeletal Care06294
- South Point Hotel & Casino35227
- South Tahoe Refuse28580
- Southeast Leasing (Packard Claims Administration)J1865
- Southern California EdisonJ1817
- Southern Illinois Healthcare AssociationSIH99
- Southern Textile Recycling Incorporated (California)J1648
- Southland Advantage Medical GroupPHM11
- Southland Benefit Solutions LLC (Canopy Vision)V47936
- Southwest Airlines (Southwest Airlines)J1233
- Southwest Michigan Behavioral Health Mental HealthA3268
- Southwest Michigan Behavioral Health Substance Use DisorderA4585
- Southwest Physicians GroupSWPG1
- Southwest Service AdministratorsCX100
- Southwest Service Life37266
- Specialty Care ProgramIHS17
- Spectrum Health10936
- Spencer Stuart (Advanced RISC Machines Ltd)38416
- SPJSTSPJMS
- Springfield Insurance CompanyJ1922
- Sprouts Farmers Market IncorporatedJ1850
- St Luke Health Plan Inc92170
- St Pauls PACESPPCA
- St. Francis - Allcare by MedPointMPM31
- St. Francis - HCLA by MedPointMPM30
- St. Paul InsuranceJ1926
- St. Therese Physician Association37116
- Standard Life and Accident Insurance Company100928
- Stanley Steemer International IncorporatedJ1939
- Stanley Works IncorporatedJ1385
- Stant CorporationJ1107
- StarLife HoldingsSTARH
- StarMed AdministratorsIHS08
- State Accident Insurance Fund (SAIF) CorporationJ1720
- State Compensation Insurance Fund ArizonaJ1538
- State Farm Insurance (Property and Casualty/Auto)31059
- State Farm Insurance Companies31053
- State Farm Medicare Supplement10645
- State Fund35076
- State Mutual10750
- State of Idaho Department of Health and Welfare12113
- State of Idaho Women's Health CheckIDWH01
- State of Minnesota Department of Employee RelationsJ1555
- State of North CarolinaJ1659
- State Of Texas Dental Plan57254
- State Office of Risk ManagementJ1418
- StayWell GuamISLAH
- Stewart C. Miller and Company10937
- Stewart Medical GroupSMG10
- Stonebridge Life Insurance Company (Cedar Rapids)SLIC2
- Stonebridge Life Insurance Company (Valley For)SLIC1
- Stones River Regional IPA AmerivantageRP010
- Stones River Regional IPA- WellcareRP011
- Stork Club Fertility, Inc.STORK
- Streamline Imaging - Streamline PTJ4606
- Streamline Imaging - Streamline PTJ4481
- Student Insurance10183
- Student Resources (UnitedHealthcare)74227
- SummaCare Health Plan95202
- Summit Administration Services86083
- Summit Community CarePASSE
- Summit Health LtdJ1108
- Summit HoldingsJ1437
- Sun Life70408
- Sun Mar HealthcareJ1610
- Sunflower State Health Plan10758
- Sunrise PACER3498
- Sunz Insurance CompanyJ1584
- Superior Insurance Services97802
- Superior Vision13305
- Supreme Court of CaliforniaJ1804
- Surego Administrative Services89207
- Surest25463
- Surgery One IPASOIPA
- Sutter Connect - Central Valley Med Group77035
- Sutter Connect - Sutter Gould Medical Foundation (SGMF)SC003
- Sutter Connect East Bay Region HospitalsSC052
- Sutter Connect Independent Physicians (SIP)SC004
- Sutter East Bay Medical Foundation94269
- Sutter HealthJ1512
- Sutter Health Aetna60624
- Sutter Health Plan13287
- Sutter Select10941
- Sutter Senior CareSC028
- Swedish Covenant Hospital36411
- Swift TransportationJ1109
- Symetra37282
- Syntriq Health SolutionsSNTRQ