Simplified Health Insurance Billing App

I'm looking for an iOS app developer to create a user-friendly, simplified health insurance billing app focused on speech, occupational, and physical therapy in Illinois. The app's primary function will be billing management, with access for patients, therapists, and administrators.

Key Features:
- Simplified billing management interface
- User roles: Patients, Therapists, and Administrators
- iOS platform compliance

Ideal Skills:
- iOS app development
- Experience in health insurance billing apps
- UI/UX design knowledge for user-friendly interface
- Understanding of therapy billing processes

Please provide examples of previous similar projects you've worked on.

Also app needs to include billing the state of Illinois for early childhood intervention