Final answer:
The medical assistant is typically in charge of completing and submitting necessary paperwork for insurance referrals in a medical office setting.
Step-by-step explanation:
The person responsible for completing the necessary paperwork for the insurance company on a referral is typically the medical assistant. In a medical office, a medical assistant often handles administrative duties, which include filling out and submitting paperwork to insurance companies for patient referrals to specialists, additional tests, or procedures that require pre-approval. This ensures that both the patients and medical office have completed the appropriate steps to secure any needed coverage and authorization for services.