NPI taxonomy code lookup
A taxonomy code is the 10-character NUCC code that tells CMS and payers your profession. You list at least one on the NPI application. Type a profession, specialty or code to search all 698 individual-provider codes in version 26.1.
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Codes SimpleNPI files most
| Profession | Code | NUCC name |
|---|---|---|
| Massage therapists | 225700000X | Massage Therapist |
| Counselors | 101YM0800X | Mental Health Counselor |
| Marriage and family therapists | 106H00000X | Marriage & Family Therapist |
| Social workers | 1041C0700X | Clinical Social Worker |
| Psychologists | 103T00000X | Psychologist |
| Nurse practitioners | 363L00000X | Nurse Practitioner |
| Registered nurses | 163W00000X | Registered Nurse |
| Chiropractors | 111N00000X | Chiropractor |
| Acupuncturists | 171100000X | Acupuncturist |
| Physical therapists | 225100000X | Physical Therapist |
| Occupational therapists | 225X00000X | Occupational Therapist |
| Dietitians and nutritionists | 133V00000X | Registered Dietitian |
| Speech-language pathologists | 235Z00000X | Speech-Language Pathologist |
| Physician assistants | 363A00000X | Physician Assistant |
| Dentists | 1223G0001X | General Practice Dentistry |
| Physicians | 207Q00000X | Family Medicine Physician |
How to pick
Choose the code that matches the license you hold, and prefer a specialization that fits (Counselor, Mental Health rather than Counselor; Nurse Practitioner, Family rather than Nurse Practitioner) because payers read it during credentialing. Students use 390200000X until licensed. You can list more than one and change them free in NPPES at any time. More in What is a taxonomy code?
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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.
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