Do concession stands have to be inspected by a health inspector?

Yes, concession stands are subject to inspection by the health department if they are collecting money for profit. The local department will usually have a "schedule" of periodic inspections of different types, or may respond directly to complaints of unsanitary conditions. In some statutes, anyone selling food or beverages to the public is subject to health regulation and inspection, including any concession stands, caterer, church kitchen, farmers' market, grocery store or restaurant. Even a beverage or food vending machine may be inspected for health and safety compliance.