Torts — Automobile accident — Discovery — Non-parties — Trade secrets or proprietary information — Internal cost structure — Trial court properly declined to impose confidentiality restrictions on information regarding amounts paid to non-party medical provider for services rendered to plaintiff injured in automobile accident on two different dates and the approximate percentage of provider’s practice devoted to treating patients who were involved in a pre-suit claim or personal injury litigation over a three-year period — Trial court erred in failing to grant provider’s request for confidentiality protection for trade secret or proprietary information regarding two examples of contracted reimbursement rates provider received from insurance carriers for surgery received by plaintiff — Remand for trial court to stay discovery until parties have opportunity to negotiate confidentiality agreement as to that information