; (xii) have oxygen or oxygen related equipment or supplies delivered by the supplier and to be contacted consistent with the requirements of section 410.38 of title 42, Code of Federal Regulations; (xiii) be informed by the supplier of any potential changes to the equipment, supplies, or services of the individual and the right to consult with the prescribing practitioner of the individual regarding such changes to ensure they are appropriate and necessary and to be informed of the exceptions, as specified by the Secretary, when a supplemental oxygen services supplier may change the oxygen equipment of the individual; (xiv) be informed by the supplier of the internal and external grievance processes of the supplier (as well as how to contact Medicare through a hotline or beneficiary ombudsman), which shall include the right of an individual to file, personally or through a representative of the individual's choosing, an internal or external grievance without retaliation or denial of services; (xv) in the case of a supplier involuntary discharging an individual— (I) receive from such supplier a written notice that is provided to the individual no later than 30 days in advance of the involuntary discharge of the individual; and (II) have such supplier— (aa) follow established involuntary discharge procedures; or (bb) in the case of an immediate threat to the health and safety of others, follow an abbreviated involuntary discharge procedure; (xvi) be assisted by the supplier in obtaining the oxygen equipment and supplies prescribed by the treating physician of the individual when the individual is traveling; (xvii) receive from the supplier oxygen supplies, refills, and emergency back-up equipment, as appropriate; and (xviii) be informed of a plan by the supplier in case of a power outage or other natural emergency, so that the individual will continue to receive the necessary oxygen supplies and equipment. .