What are Taxonomy Codes?
Taxonomy codes are a 10-digit federally established number which health care professionals use to identify their unique specialty areas. They are a combination of Provider Type and Provider Specialty that are self-declared by health care providers during the National Provider Identifier (NPI) enrollment process. The Health Care Provider Taxonomy code set is developed by CMS and is published twice a year in July and January. The July publication is effective for use on October 1 and the January publication is effective for use on April 1. The taxonomy code set is available at www.wpc-edi.com/taxonomy.
