Speech, Language and Hearing Service Providers / 235Z00000X
Individual · classification · Medicare specialty 15
235Z00000X Speech-Language Pathologist
235Z00000X is the taxonomy code for Speech-Language Pathologist, in the NUCC group “Speech, Language and Hearing Service Providers”. It is a code for individual providers — the kind used on a Type 1 NPI. Medicare maps it to specialty 15, Speech Language Pathologist, under which 14,333 practitioners are enrolled.
- 1Taxonomy code 235Z00000X
- 2Level Classification
- 3Medicare specialty 15 Speech Language Pathologist
- 4Codes in this group 9
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 Health Care Provider Taxonomy, version 26.1
Where 235Z00000X sits
- Group: Speech, Language and Hearing Service Providers — code 9 of 9 in the group
- Classification: Speech-Language Pathologist 235Z00000X
Speech-Language Pathologist has no specializations, so 235Z00000X is the only code for it. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
CMS's taxonomy crosswalk links 235Z00000X to Medicare specialty 15 (Speech Language Pathologist). That specialty — not the taxonomy code itself — is what Medicare enrollment records and uses for payment. 14,333 practitioners are enrolled under it nationally.
Related codes
No other codes share the classification Speech-Language Pathologist. The rest of Speech, Language and Hearing Service Providers is on the group page.
History of 235Z00000X
NUCC's notes record no dated changes for 235Z00000X. The code set is republished every January and July, when codes are added, retitled or marked inactive; this page reflects version 26.1, so check the NUCC site if you are reading it after the next release.
Similar codes in other groups
If 235Z00000X is not quite right, these codes in other groups share a word with it — often the same field practised by a different kind of provider:
- 261QH0700X Hearing and Speech Clinic/Center (Ambulatory Health Care Facilities)
Find providers with 235Z00000X
Using 235Z00000X
The code goes in the taxonomy field of the NPI application in NPPES, and on claims where a payer asks for it — box 24J (shaded) or 33b on the CMS-1500 with the ZZ qualifier, or the PRV segment of an 837 electronic claim. Payers match it against the taxonomy on the NPI record and, for Medicare, against the specialty on the enrollment, so all three should agree. To see which code a provider uses, search their NPI in the lookup.
Sources: NUCC Health Care Provider Taxonomy code set, version 26.1 (CSV); CMS Medicare Provider and Supplier Taxonomy Crosswalk, August 2026; CMS Medicare Fee-For-Service Public Provider Enrollment, extract of 2026-09-29. Checked 2026-10-24. Methodology.