People enrolled in individual and family health plans are able to switch or upgrade plans during Open Enrollment (generally Nov. 1 - Dec. 15) of every year.
It is usually not possible to change or upgrade health insurance plans outside of Open Enrollment Period. Only those who qualify for Special Enrollment can switch plans mid-year. However, in order to be eligible for Special Enrollment you must have experienced a “Qualifying Event” within the past 60 days.
Note: This is related to healthcare coverage only. Dental and Vision insurance can be obtained at anytime throughout the year.
Here is a quick video explaining the different between Open Enrollment Period (OEP) and Special Enrollment Period (SEP).