Prior to turning age 65, the County of San Bernardino (County) will send a letter explaining coverage options. Employees and/or dependents who will be turning age 65 or are disabled may choose either a County-sponsored medical plan or Medicare. If you and/or your dependents are eligible for Medicare, yet choose to stay in a County plan, the County-sponsored plan will pay claims first and Medicare will be the secondary payer. If you and/or your dependents choose to drop your County-sponsored medical plan, Medicare will be your primary coverage. To help you decide, call the Social Security office to discuss Medicare options and premiums.