The National Provider Identifier is a 10 digit numeric identifier that will be a requirement for all individual health care providers who meet the definition of a "covered entity" under the Health Insurance Portability and Accountability Act (HIPAA), beginning May 23, 2007. CMS has stated that use of the NPI will reduce costs and improve efficiency. If you work in a group practice, the group as well as individual physical therapists must apply for the NPI. If you are employed by a SNF or hospital, obtaining an NPI is not mandatory, but may be required by your employer. The APTA recommendes that ALL PT's and PTA's obtain the NPI regardless of your practice setting. The deadline to apply has been extended. To apply online (a 20-30 minute process) go to: http://NPPES.cms.hhs.gov. To request a paper application, call 1-800-465-3203. Information on the new claim forms for use after May 23, 2007, is available at: http://www.cms.hhs.gov/ElectronicBillingEDITrans/15_1450.asp#TopOfPage.