NUCC taxonomy code

364S00000X - Clinical Nurse Specialist

364S00000X is the NUCC provider taxonomy code for Clinical Nurse Specialist (individual providers). 1,911 providers in our latest NPPES snapshot list it as their primary taxonomy.

1,911 providers · primary taxonomy

Code breakdown

Taxonomy code 364S00000X

Display name Clinical Nurse Specialist

Grouping Physician Assistants & Advanced Practice Nursing Providers

Classification Clinical Nurse Specialist

Section Individual

Directory Clinical Nurse Specialist provider directory

Definition

A registered nurse who, through a graduate degree program in nursing, or through a formal post-basic education program or continuing education courses and clinical experience, is expert in a specialty area of nursing practice within one or more of the components of direct patient/client care, consultation, education, research and administration.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

Frequently asked questions

What does taxonomy code 364S00000X mean?

364S00000X is the NUCC Health Care Provider Taxonomy code for Clinical Nurse Specialist in the "Physician Assistants & Advanced Practice Nursing Providers" grouping. It classifies individual providers.

Where is the taxonomy code used?

Providers select a taxonomy code when applying for an NPI, and it appears on insurance claims (CMS-1500 box 33b / 837 electronic claims) to identify the provider's classification. Payers may require the taxonomy that matches your credential and license.

How do I find providers with taxonomy 364S00000X?

Browse the Clinical Nurse Specialist directory, or use the NPI search and filter by state.

Source: CMS NPPES (public data). Snapshot 2026-07-13.