Yes. Luckily the charging port is a modular component on the Galaxy S4, and can be replaced independently without the need to break out a soldering iron (like on the S3).
A simple eBay search for "Galaxy S4 Charging Port" on eBay will bring up a slew of reliable sellers/suppliers: [http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0.H0.Xgalaxy+s4+charging+por&_nkw=galaxy+s4+charging+port&_sacat=0&_from=R40|Here you go.]