Oregon insurance regulators are seeking the authority to require private insurers to have enough doctors and other health care providers to adequately serve all their customers. The move comes as a growing number of insurance companies seek to save money by shrinking the number of providers in their network. Regulators also say consumers need more transparency when shopping for insurance, including information about which doctors are covered and whether they are accepting new patients. The Oregon Insurance Division has created a task force that is working on a bill for the 2015 Legislature to consider. The group, which includes representatives from many of Oregon's insurance companies and from various sectors of the health care industry, will meet Thursday.