These stocks are crushing the market this year, and there is likely plenty of upside ahead.

One great thing about the healthcare sector is that the need for medical services never goes out of style, and in fact, is likely to be in even higher demand in the next decade.

That makes the industry a great place to look for stocks that can perform well over the long run, but not just any company can achieve this. Some are left behind as they fail to keep pace with the evolving sector requirements, while others know how to innovate and outperform their peers as a result.

HCA Healthcare ( HCA -1.83% ) and TransMedics Group ( TMDX -4.36% ) belong to the second group. Here's why these two healthcare companies could perform well in the next 10 years.

1. HCA Healthcare

HCA Healthca

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