Nephrology News & Issues has been ranking the 10 largest dialysis providers for 21 years. Here are the dialysis provider rankings from the last seven years.

2010: Provider rankings see minor adjustments, ready for bundle’s arrival

2011: Is the ESRD bundle leading to a tighter provider market?

2012: Will new mandates knock out the competition?

2013: Moderate growth for dialysis providers, but rebasing, ACO participation will impact long-term picture

2014: A look back, and getting positioned for the future

2015: What’s next for dialysis companies?