MetaMap maps terms occuring in text to UMLS Metathesaurus concepts. As part of this mapping process, MetaMap tokenizes text into sections, sentences, phrases, terms, and words. MetaMap maps the noun phrases of the text to the best matching UMLS concept or set of concepts that best cover each phrase. The MetaMap Java API provides java programs with programmatic access to MetaMap mapping engine. Additionally, this annotator encodes MetaMap named entities in a format utilizable by UIMA components. The annotator is based on the MetaMap UIMA Wrapper (http://sourceforge.net/projects/metamap-uima/) authored by Kai Schlamp.