Is ONS Congress still being held in San Antonio? Lacey Pope March 23, 2020 22:50 Updated Follow ONS is closely monitoring the coronavirus outbreak. We will post updates to the Congress Blog and continue to evaluate as the situation evolves and adjust plans as necessary. Related articles What is the cancellation and transfer policy for ONS courses? Licensing of the ONS Oncology Policies and Procedures How do I verify an applicant's provider card status? Chapter Leaders Community Tutorials How do I purchase vouchers? Comments 0 comments Article is closed for comments.