Final answer:
Business correspondence is the type of correspondence that relates to the management of the office and may concern insurance companies, lawyers, supply houses, and bills to patients.
Step-by-step explanation:
The type of correspondence that relates to the management of the office and may concern insurance companies, lawyers, supply houses, and bills to patients is Business correspondence. This type of correspondence is professional in nature and is commonly used in various industries to communicate important information between organizations and individuals.