About
The Organ Procurement and Transplantation Network (OPTN) is a unique public-private partnership that links all professionals involved in the U.S. donation and transplantation system. Also crucial to the system are individuals who sign organ donor cards, people who comment on policy proposals and countless volunteers who support donation and transplantation, among many others.
A driving force of the OPTN is to improve the U.S. system so that more life-saving organs are available for 
transplant. Patient safety is at the forefront of activities at transplant hospitals, organ procurement organizations (OPOs) and labs.
The OPTN acts through its Board of Directors and committees, who bring a wealth of commitment and technical knowledge to guide us. Committees address issues of concern in the transplant community. The board establishes and maintains transplant policies (operational rules), bylaws (governance structure and roles) and management and membership policies (membership requirements) that govern the OPTN.
Learn more about:
OPTN membership
As of October 31, 2025, OPTN membership included the following:
| Type of OPTN Member | Number | 
|---|---|
| Transplant Hospitals | 252 | 
| Organ Procurement Organizations  | 55 | 
| Independent | 48 | 
| Hospital Based | 7 | 
| Histocompatibility Laboratories  | 137 | 
| Independent | 48 | 
| Hospital Based | 89 | 
| Public Organizations | 10 | 
| Individual Members | 15 | 
| Medical Scientific Organizations | 11 | 
| Business Members | 54 | 
| Total | 438 | 
 NOTE: There are 7  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: There are 7  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.
OPTN contractor
United Network for Organ Sharing (UNOS) was awarded the initial OPTN contract on September 30, 1986, and continues to administer the OPTN today.
