See Search Degrees for the list of deadlines.
If you have an in-progress application, use that account and proceed. If you are having any issues, submit a ServiceNow ticket.
To be eligible for admission to graduate programs at Stanford, applicants must meet one of the following conditions:
Applicants must hold, or expect to hold before enrollment at Stanford, a bachelor’s degree from a U.S. college or university accredited by a regional accrediting association.
Applicants from institutions outside the U.S. must hold the equivalent of a U.S. bachelor’s degree from a college or university of recognized standing. See minimum level of study required of International applicants.
You may apply to only one degree program per academic year, with these exceptions: within the Biosciences, you may apply to up to two Ph.D. programs within your one application; or you may apply concurrently to one departmental program and to a professional school program, i.e., Law, Medicine (M.D. program), or Business. For instance, it is feasible to apply to a degree program in one department and to the PhD program at the Graduate School of Business simultaneously.