HITECH/MIPS and MACRA

What is the purpose of HITECH and what are the core programs associated with HITECH?
The vast majority of Medicare providers are required to participate in one of two MACRA tracks, the Merit-based Incentive Payment System (MIPS) or an Advanced Alternative Payment Model (AAPM). Explain and compare the details of both tracks and discuss the advantages and disadvantages of both.

Explain which professionals are eligible to participate in MIPS and AAPM payment systems. Providers can participate as individuals or groups with the same Tax-ID Number (TIN), differentiate individual versus group participation.
What barriers do you foresee regarding healthcare reimbursement as healthcare continues to shift further towards paying for quality healthcare and not the quantity of healthcare?