The shifting health insurance climate and escalating medical costs have created an opportunity for a new Waltham company that helps people deal with their medical debts. CoPatient, which launched in October, provides free audits of patients' medical bills to identify billing errors and overcharges and to determine if costs can be appealed. The company differentiates itself from similar services by crowd-sourcing medical bills, according to co-founder Katie Vahle. "We aggregate the experiences of all the people who we help, and we learn from those experiences and then apply them to the next individual who comes to us with their medical bills," Vahle said.
