Please at least try to get started with an application, even if you don’t have all the info they usually let you finish after the deadline.
https://www.healthcare.gov/quick-guide/dates-and-deadlines/
The 2020 Open Enrollment Period runs from Friday, November 1, 2019, to Sunday, December 15, 2019. If you don’t act by December 15, you can’t get 2020 coverage unless you qualify for a special enrollment period. Plans sold during Open Enrollment start January 1, 2020.
A quick reminder for folks in the US: if you haven’t seen anything about ACA open enrollment this year, that is by design. Secretary Azar wants to lower enrollment numbers to justify pulling funds from medicare/medicaid. Here are your dates:
And the link.