Who needs an NPI number? By profession

The NPI is the same 10-digit number for every profession, but who asks for it, which taxonomy code goes on the application, and what to do before licensure differ. Pick your profession.

Massage therapistsLMT · taxonomy 225700000X CounselorsLPC / LMHC / LCPC · taxonomy 101YM0800X Marriage and family therapistsLMFT · taxonomy 106H00000X Social workersLCSW · taxonomy 1041C0700X PsychologistsPhD / PsyD · taxonomy 103T00000X Nurse practitionersNP / APRN · taxonomy 363L00000X Registered nursesRN · taxonomy 163W00000X ChiropractorsDC · taxonomy 111N00000X AcupuncturistsL.Ac. · taxonomy 171100000X Physical therapistsPT / DPT · taxonomy 225100000X Occupational therapistsOT / OTR · taxonomy 225X00000X Dietitians and nutritionistsRD / RDN · taxonomy 133V00000X Speech-language pathologistsSLP / CCC-SLP · taxonomy 235Z00000X Physician assistantsPA-C · taxonomy 363A00000X DentistsDDS / DMD · taxonomy 1223G0001X PhysiciansMD / DO · taxonomy 207Q00000X

Not on the list?

Every licensed health care profession can get an NPI. Search every taxonomy code at the taxonomy code finder, or start the free application and choose Other as the license type; a person reviews it before filing.

Written by Ammon Hardin, LMT, who grew a massage practice to ten locations, built a veteran therapy network, and credentialed a large number of providers along the way. Updated Tue Oct 27, 2026. Free to read, free to use; SimpleNPI files NPI applications for free.