Most directories rank. The firm at the top paid, or the directory graded firms it cannot actually audit. We do neither, so the list stays alphabetical.
The problem with rankings we cannot support
We verify what is public. We cannot audit a billing firm's internal error rates, its staff turnover, or how it treats a practice after month six. A 1-to-5 score built on that would be invented precision.
How to choose without a ranking
The guides give you the questions instead: specialty fit, service scope, systems, contract terms, and references. Ask every firm the same questions and the differences between them become visible on their own.
Where paid placement would fit
If sponsorship ever appears here, it will be labeled as sponsorship, separate from the list. The list itself stays alphabetical.