For those looking to find strong Medical stocks, it is prudent to search for companies in the group that are outperforming their peers. AMN Healthcare Services (AMN) is a stock that can certainly grab the attention of many investors, but do its recent returns compare favorably to the sector as a whole? Let's take a closer look at the stock's year-to-date performance to find out.AMN Healthcare Services is one of 1184 individual stocks in the Medical sector. Collectively, these companies sit at #2 in the Zacks Sector Rank. The Zacks Sector Rank considers 16 different sector groups. The average Zacks Rank of the individual stocks within the groups is measured, and the sectors are listed from best to worst.The Zacks Rank is a successful stock-picking model that emphasizes earnings estimates and estimate revisions. The system highlights a number of different stocks that could be poised to outperform the broader market over the next one to three months. AMN Healthcare Services is currently sporting a Zacks Rank of #2 (Buy).Over the past three months, the Zacks Consensus Estimate for AMN's full-year earnings has moved 2.6% higher. This signals that analyst sentiment is improving and the stock's earnings outlook is more positive.Based on the most recent data, AMN has returned 1.8% so far this year. Meanwhile, stocks in the Medical group have lost about 18.2% on average. This means that AMN Healthcare Services is performing better than its sector in terms of year-to-date returns.Another Medical stock, which has outperformed the sector so far this year, is Biogen Inc. (BIIB). The stock has returned 27.8% year-to-date.In Biogen Inc.'s case, the consensus EPS estimate for the current year increased 4.1% over the past three months. The stock currently has a Zacks Rank #2 (Buy).To break things down more, AMN Healthcare Services belongs to the Medical Services industry, a group that includes 70 individual companies and currently sits at #97 in the Zacks Industry Rank. On average, this group has lost an average of 31.6% so far this year, meaning that AMN is performing better in terms of year-to-date returns.In contrast, Biogen Inc. falls under the Medical - Biomedical and Genetics industry. Currently, this industry has 560 stocks and is ranked #59. Since the beginning of the year, the industry has moved -17.9%.AMN Healthcare Services and Biogen Inc. could continue their solid performance, so investors interested in Medical stocks should continue to pay close attention to these stocks. Zacks Names "Single Best Pick to Double" From thousands of stocks, 5 Zacks experts each have chosen their favorite to skyrocket +100% or more in months to come. From those 5, Director of Research Sheraz Mian hand-picks one to have the most explosive upside of all. It’s a little-known chemical company that’s up 65% over last year, yet still dirt cheap. With unrelenting demand, soaring 2022 earnings estimates, and $1.5 billion for repurchasing shares, retail investors could jump in at any time. This company could rival or surpass other recent Zacks’ Stocks Set to Double like Boston Beer Company which shot up +143.0% in little more than 9 months and NVIDIA which boomed +175.9% in one year.Free: See Our Top Stock and 4 Runners Up >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report AMN Healthcare Services Inc (AMN): Free Stock Analysis Report Biogen Inc. (BIIB): Free Stock Analysis ReportTo read this article on Zacks.com click here.Zacks Investment Research