Outpatient Billing Software Development

I need a specialized hospital billing software focused on outpatient billing. The software should primarily handle patient billing and invoicing.

Key functionalities required:
- Generating invoices
- Processing advance payments
- Managing discharge summaries

Ideal Skills and Experience:
- Experience in developing billing software, especially for healthcare
- Strong understanding of outpatient billing processes
- Proficiency in invoicing and payment processing systems
- Ability to create user-friendly interfaces for easy navigation

Please provide examples of similar work done and your approach to ensure accuracy and compliance with healthcare regulations.