An insurance card is a small card issued by an insurance company that provides proof of health coverage. It typically includes important information such as the policyholder's name, policy number, and the type of coverage. This card is essential for accessing medical services and helps healthcare providers verify a patient's insurance benefits. When visiting a doctor or hospital, patients present their insurance card to ensure that their medical expenses are covered. The card may also list contact information for the insurance company and any co-payment details, making it easier for patients to understand their financial responsibilities during medical visits.