CORE Endorsers
The list of organizations below endorse (or are committed to endorse) CORE and the Phase I and/or Phase II rules. Entities that do not use, create, or transmit eligibility and/or claim status data can demonstrate their support for CORE’s mission and its rules by signing the CORE Pledge, and applying for and using the CORE Endorser Seal.
View pending and current CORE certifications by visiting the CORE Certification page. Only entities that use, create, or transmit eligibility or claim status data are eligible for CORE certification.
| Organizations | Rule Phase | |
| Accenture | Phase I | |
| American Academy of Family Physicians | Phase I & II | |
| American Association of Preferred Provider Organizations | ![]() |
Phase I (Phase II Committed) |
| American College of Physicians | Phase I (Phase II Committed) | |
| American Health Information Management Association | Phase I (Phase II Committed) | |
| American Medical Association | Phase II | |
| CalRHIO | Phase I | |
| Center for Health Transformation | Phase I & II | |
| Claredi | Phase I | |
| Cognizant | Phase I & II | |
| Edifecs, Inc. | Phase I (Phase II Committed) | |
| eHealth Initiative | Phase I (Phase II Committed) | |
| EHNAC | ![]() |
Phase I (Phase II Committed) |
| eMids | Phase I & II | |
| Enclarity, Inc. | Phase I (Phase II Committed) | |
| FISGlobal | Phase I & II | |
| Foresight Corporation | Phase I & II | |
| Greater New York Hospital Association | ![]() |
Phase I (Phase II Committed) |
| Healthcare Financial Management Association | Phase I (Phase II Committed) | |
| Healthcare Information and Management Systems Society | Phase I (Phase II Committed) | |
| HIPAA QA, Inc. | Phase I & II | |
| Methodical | ![]() |
Phase I & II |
| Medical Group Management Association | Phase I & II | |
| Michigan Public Health Institute | Phase I (Phase II Committed) | |
| Microsoft | Phase I (Phase II Committed) | |
| MultiPlan | Phase I (Phase II Committed) | |
| Musculoskeletal Imaging Consultants LLC | Phase I & II | |
| NACHA | Phase I & II | |
| National eHealth Collaborative | (Phase I & II Committed) | |
| Pillsbury Winthrop Shaw Pittman, LLP | Phase I | |
| Qualedix | ![]() |
Phase I & II |
| Smart Card Alliance | Phase I & II | |
| TIBCO Sorftware, Inc. | Phase I & II | |
| URAC | Phase I | |
| Virginia Health Exchange Network | (Phase I & II Committed) | |
| WEDI | Phase I (Phase II Committed) |













