US Healthcare/RCM Consultant/Auditor

We want to benchmark our performance of medical billing against the industry. I need to do this to 1. identify any gaps in our performance and 2. to use this benchmarking for marketing purposes. For this I am looking for a medical billing (or revenue cycle management) consultant/auditor who can audit our medical billing performance and compare to the industry. Please find consultants or auditors who can help me do the same.