Withdrawal from Medicare advantage networks. Provides that a hospital, physician, or physician group: (1) may not withdraw from a Medicare advantage network for any part of a calendar year after the calendar year has begun; (2) may withdraw from a Medicare advantage network only for an entire calendar year; and (3) may withdraw for an entire calendar year only by giving notice of the withdrawal to the insurer that operates the Medicare advantage plan not later than September 1 immediately preceding the calendar year. Provides that an insurer operating a Medicare advantage plan: (1) may not remove a hospital, physician, or physician group from the Medicare advantage plan’s Medicare advantage network for any part of a calendar year after the calendar year has begun; (2) may remove a hospital, physician, or physician group from the Medicare advantage network only for an entire calendar year; and (2) may remove a hospital, physician, or physician group from the Medicare advantage network for a calendar year only by giving notice of the removal to the hospital, physician, or physician group not later than September 1 immediately preceding the calendar year. Makes certain exceptions. Provides that notice of the withdrawal or removal of a hospital, physician, or physician group from a Medicare advantage network must be given by letter, telephone message, or electronic mail message at least 60 days before the withdrawal or removal to each individual who is covered by the Medicare advantage plan and who, not more than two years before the date of the withdrawal or removal, was seen or treated by the physician or a physician of the physician group or was an inpatient in or received medical treatment in the hospital. Empowers the insurance commissioner to impose penalties for violations and authorizes the insurance commissioner to adopt administrative rules.