How do you write a letter when a patient owes a bill?

When writing a letter to a patient who owes a bill, start with a polite greeting and clearly state the purpose of the letter. Include specific details about the outstanding balance, the services rendered, and any relevant payment terms or deadlines. Maintain a professional and empathetic tone, offering assistance or options for payment if possible. Conclude with a reminder of the importance of addressing the bill promptly and provide contact information for further inquiries.