Taxonomy code 235Z00000X: Speech-Language Pathologist

235Z00000X is the NUCC Health Care Provider Taxonomy code for Speech-Language Pathologist, in the group Speech, Language and Hearing Service Providers. It is one of the codes a provider lists on the NPI application to tell CMS and payers what they do.

Code

235Z00000X

Grouping

Speech, Language and Hearing Service Providers

Classification

Speech-Language Pathologist

Section

Individual

NUCC version

26.1

Definition

The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.

NUCC notes: "Scope of Practice in Speech-Language Pathology", American Speech-Language-Hearing Association, 2013.

Who uses this code

Speech-language pathologists (the usual code)

Get an NPI with this taxonomy

Two free ways. SimpleNPI files the application for you with 235Z00000X entered from your license type; the NPI usually arrives by email and text, with all the documentation, within 10 minutes. Or apply yourself at nppes.cms.hhs.gov and type the code into the taxonomy field. First, check the free registry in case you already have an NPI.

Option 1 · Free · Easiest

SimpleNPI files it for you

One short form: name, license, contact, address, identity and an e-signed authorization. About 3 minutes, no CMS account to create.
A person checks your license and address, then files the application with CMS under your signed authorization.
Your NPI arrives by email and text, with all the documentation, usually within 10 minutes. Filed after midnight Eastern? It issues around 6 am Eastern.

Usually within 10 minutes after the form is complete.

Start the free application

Option 2 · Free

Apply yourself at NPPES

Create an Identity & Access account at nppes.cms.hhs.gov.
Choose Apply for an NPI for myself, Individual (Type 1).
Enter identity, addresses, taxonomy code and license number, then certify and submit.

Usually a few business days; often minutes when the Social Security match passes.

Go to NPPES

Questions

Is 235Z00000X the right taxonomy code for a speech-language pathologist?

Yes. 235Z00000X, Speech-Language Pathologist, is the code SimpleNPI files for speech-language pathologists.

Can I change my taxonomy code later?

Yes, for free, in your NPPES account. Add the new code with its license, make it primary, and remove the old one if it no longer applies. The NPI itself never changes.

Does 235Z00000X have to match my license?

It should describe the profession your license covers. Payers compare the taxonomy with the license during credentialing, and a mismatch slows that down.

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.