Amgen has many growth opportunities ahead, and it also pays a fairly high dividend.If you're looking for a top healthcare company to invest in, you may want to consider looking at one that has multiple fast-growing products in its portfolio. By seeking out diversified growth stocks, you can minimize your risk and reduce significant volatility. If a company has a diverse product mix, it has many ways to grow its operations without being too dependent on a single asset.Amgen (AMGN -0.53%) is coming off a stro ...