| Organization name | Address | First registered nodes | Current registered nodes |
|---|---|---|---|
| Woo Lee Nam | --- | 1 | 0 |
| Bob Dolin | SDWG Health Level Seven International 3300 Washtenaw Avenue, Suite 227 Ann Arbor, MI 48104 |
3 | 0 |
| Ian Maddison | --- | 1 | 0 |
| Mark Adams | --- | 1 | 0 |
| Wallraff Dean | --- | 1 | 0 |
| Zapfel Robert | --- | 1 | 0 |
| Internet Administrator | --- | 1 | 0 |
| Jozef Bombiak | --- | 1 | 0 |
| Donovan John | --- | 2 | 0 |
| Torhan Michael | --- | 1 | 0 |
| Kuhn Gregory | --- | 1 | 0 |
| Yucha Matthew W. | --- | 1 | 0 |
| Xiu Yu Yin | --- | 0 | 1 |
| Wheaton Franciscan Healthcare The Wisconsin Heart Hospital | 10000 W. Bluemound Road Wauwatosa, WI 53226 United States (the) |
1 | 0 |
| Andrew Galewsky | --- | 1 | 0 |
| Triantafellos Hatziantoniou | --- | 1 | 0 |
| Aurelien Duarte | --- | 2 | 0 |
| Palmer Steven | --- | 1 | 0 |
| Edy Javier Milla Reyes | --- | 0 | 1 |
| Border Clinic PLC | 702 E Calton Rd, Ste 102 Laredo, Texas 78041 United States (the) |
1 | 0 |
| Florian Wagner | --- | 1 | 0 |
| Hydro Medical Clinic | 579 North Broadway Ave. Hydro, Oklahoma 73048 United States (the) |
1 | 0 |
| Michael Kolb | --- | 1 | 0 |
| Menendez Miguel Angel Moreno | --- | 2 | 0 |
| Ginther Andreas | --- | 2 | 0 |
| Snow Adrian | --- | 1 | 0 |
| Lori Havener | North American Association of Central Cancer Registries (NAACCR) 2121 West White Oaks Drive Suite B Springfield, IL 62704-7412 |
12 | 0 |
| Jean-Claude CHRISTOPHE | --- | 1 | 0 |
| Helmut Manck | --- | 1 | 0 |
| Gowdy Anne | --- | 1 | 0 |
| Meer Andre van der | --- | 1 | 0 |
| Mathias Globig | --- | 1 | 0 |
| Joshua Marsh | --- | 1 | 0 |
| Charle Demers | --- | 3 | 0 |
| STS SoftWare Co, Ltd | HuangPu Sports Center ,HuangPU district GuangZhou City, GuangDong Province China |
1 | 0 |
| Chung Anthony | --- | 1 | 0 |
| Marco Poet | --- | 1 | 0 |
| Eric Lindahl | --- | 1 | 0 |
| kirby zhou | --- | 1 | 0 |
| Hornbaker Richard | --- | 3 | 0 |
| Carlos Marimón | --- | 1 | 0 |
| Gallo Paulo | --- | 1 | 0 |
| Andy Collier | --- | 1 | 0 |
| James Waite | --- | 5 | 0 |
| Doug Schaapveld | --- | 1 | 0 |
| Kingsley Bill | --- | 1 | 0 |
| Héjjas Gábor | --- | 1 | 0 |
| InfoLite AG | Bern Switzerland |
1 | 0 |
| Yousuke SASAKI | --- | 1 | 0 |
| Harry Sheppard | --- | 2 | 0 |