Currently, every transplant hospital program, organ procurement organization, and transplant histocompatibility laboratory in the United States is an OPTN member. Membership means that their institution meets OPTN requirements and that they play an active role in forming the policies that govern the transplant community.
Other OPTN members include: voluntary health organizations, such as the National Kidney Foundation; general public members, such as ethicists and donor family members; and medical professional/scientific organizations, such as the American Society for Transplantation.
Individuals from member organizations participate in the decision-making process through representation on committees and on the board of directors.
Who to contact for membership changes
- If you are an OPTN member transplant hospital, organ procurement organization, or histocompatibility lab, please use the Member Community Portal to submit membership-related requests. For technical assistance related to the Member Community Portal, please contact the UNet Help Desk at 800-978-4334.
- If you are a business or individual user, please submit any applications to MembershipRequests@unos.org.
- Routine account (add/remove/modify) requests should be processed in about 2 business days. If more information is needed, someone will follow up with you.
- Inquiries related to membership application questions, membership application status, safety, and/or compliance with membership policy should email OPTNmembercompliance@hrsa.gov.
- Prospective members should continue to contact membershiprequests@unos.org to obtain and submit completed membership application forms.
Unlike new membership applications and key personnel changes, administrative and routine account requests do not go through MPSC review and therefore have a faster turnaround time of just a few business days. The following is a list of administrative actions, which should be submitted through the Member Community Portal:
- Changes for existing OPTN representatives, and OPTN alternate representatives
- OPO key personnel
- Primary program administrator
- Primary data coordinator
- Additional surgeon or physician
- Site access administrator
- HOPE act variance request, renewals & withdrawals
- Program Director
- KPD Job Change
Membership applications and forms
- Application for Transplant Hospitals and Programs (PDF - 506 KB)*
- Application for Kidney Transplant Programs (PDF - 1 MB)*
- Application for Liver Transplant Programs (PDF - 1 MB)*
- Application for Pancreas Transplant Programs (PDF - 825 KB)*
- Application for Heart Transplant Programs (PDF - 1 MB)*
- Application for Lung Transplant Programs (PDF - 873 KB)*
- Application for Islet Transplant Programs (PDF - 773 KB)*
- Application for Vascularized Composite Allograft (VCA) Transplant Programs (PDF - 950 KB)*
- Application for Intestine Transplant Programs (PDF - 995 KB)*
- Application for Histocompatibility Laboratories (PDF - 393 KB)*
- Application for Organ Procurement Organizations (OPOs) (PDF - 316 KB)*
- Application for OPTN Medical/Scientific* (PDF - 253 KB)
- Application for OPTN Public Organization (PDF - 239 KB)*
- Application for OPTN Business (PDF - 188 KB)*
- Application for OPTN Individual (PDF - 241 KB)*
- OPTN Representative Form (PDF - 173 KB)*
- Primary Data Coordinator Form (PDF - 246 KB)*
- Primary Program Administrator Form (PDF - 246 KB)*
- Additional Surgeons and Physicians Form (PDF - 886 KB)*
- HOPE Act Variance Request Form (PDF - 283 KB)*
- Kidney Paired Donation Pilot Program (KPDPP) Contact Update Form (PDF - 179 KB)*
- OPTN Membership Application Surgeon or Physician Log (PDF - 505 KB)*
- Information Security Contact Form (PDF - 125 KB)*
Member actions
Learn more about member actions:
- Members Not in Good Standing (MNIGS)
- Probation
OPTN membership database
View the latest list of OPTN members:
- OPTN membership database (XLSX - 83 KB) (March 19, 2026)
OPTN membership
As of March 19, 2026, OPTN membership included the following:
| Type of OPTN Member | Number |
|---|---|
| Transplant Hospitals | 250 |
| Organ Procurement Organizations** | 55 |
| Independent | 48 |
| Hospital Based | 7 |
| Histocompatibility Laboratories** | 138 |
| Independent | 49 |
| Hospital Based | 89 |
| Public Organizations | 10 |
| Individual Members | 16 |
| Medical Scientific Organizations | 11 |
| Business Members | 56 |
| Total | 440 |
**Note: There are seven OPTN members that operate both transplant hospitals and in-house OPOs and 89 that operate both transplant hospitals and in-house histocompatibility laboratories. These members are included in the count of transplant hospitals, operating OPOs, and/or laboratories. For this reason, the total number of members is less than the sum of the different categories.
*Note: If you use assistive technology, you may not be able to access information in this file. For help, contact us at 800-221-9393.