Research participants are partners in discovery at the Clinical Center, the nation’s clinical research hospital. Clinical research is medical research involving people.The Clinical Center’s mission is to rapidly translate scientific observations and laboratory discoveries into new ways to diagnose, treat and prevent disease. More than 500,000 individuals from around the world have participated in clinical research at the Clinical Center since the hospital opened in 1953. The Clinical Center does not charge patients for participation and treatment in clinical studies at NIH. In addition, in certain emergency circumstances, you may qualify for help with travel and other expenses. To learn about our clinical research studies, contact us at:1-800-411-1222 or Click here.

It is not the intention of NIH to provide specific medical advice, but rather to provide users with information to better understand their health and their diagnosed disorders. Specific medical advice will not be provided, and NIH urges you to consult with a qualified physician for diagnosis and for answers to your personal questions.

Email sent to the National Institutes of Health Clinical Center may be forwarded to appropriate NIH or outside experts for response. We do not collect your name and e-mail address for any purpose other than to respond to your query. Nevertheless, email is not necessarily secure against interception. This statement applies to NIH Clinical Center Studies website. For additional inquiries regarding studies at the National Institutes of Health, please call the Office of Patient Recruitment at 1-800-411-1222.

Contact Us

Requesting Information

Contact the Office of Patient Recruitment for:

  • Details on how to participate in a study
  • Details on how to refer a patient to a study

NIH Clinical Studies Information Request
Phone: 1-800-411-1222
TTY: 1-866-411-1010
10 Cloister Court
Building 61
Bethesda, MD 20892

Contact the Office of Communications for:

  • General information about the NIH Clinical Center
Phone: 301-496-2563
10 Center Drive
Bethesda, MD 20892

Contact the Department Clinical Research Informatics, (DCRI) for:

  • Technical questions about Adobe Acrobat and the PDF format
  • Technical questions about this web server