Resident Taxonomy Code Finder
Find the NUCC taxonomy code for your NPI application — residents, fellows, and attendings
Look up the health care provider taxonomy code for your NPI application. Trainees without a full license may use 390200000X per CMS-10114. Licensed attendings should use NUCC specialty codes. Verify with your GME and billing office — state payer rules may differ.
Reference information only. Not medical, legal, or immigration advice. Not official CMS guidance. Full disclaimer
Last reviewed 2026-05-20