NUCC taxonomy code
156FX1900X - Orthoptist
156FX1900X is the NUCC provider taxonomy code for Orthoptist, a specialization within Technician/Technologist (individual providers). 44 providers in our latest NPPES snapshot list it as their primary taxonomy.
44
providers · primary taxonomy
Code breakdown
Taxonomy code 156FX1900X
Display name Orthoptist
Grouping Eye and Vision Services Providers
Classification Technician/Technologist
Specialization Orthoptist
Section Individual
Definition
An orthoptist is an allied health professional skilled in evaluation and treatment of children and adults with eye movement difficulties. Their specialty is strabismus, amblyopia, and double vision.
Definition from the NUCC Health Care Provider Taxonomy code set.
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Related taxonomy codes
156F00000X Technician/Technologist 156FC0800X Contact Lens Technician/Technologist (Technician/Technologist) 156FC0801X Contact Lens Fitter (Technician/Technologist) 156FX1700X Ocularist (Technician/Technologist) 156FX1100X Ophthalmic Technician/Technologist (Technician/Technologist) 156FX1101X Ophthalmic Assistant (Technician/Technologist) 156FX1800X Optician (Technician/Technologist) 156FX1201X Optometric Assistant Technician (Technician/Technologist)
Frequently asked questions
What does taxonomy code 156FX1900X mean?
156FX1900X is the NUCC Health Care Provider Taxonomy code for Orthoptist, a specialization of Technician/Technologist in the "Eye and Vision Services 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 156FX1900X?
Browse the Technician/Technologist directory, or use the NPI search and filter by state.
Source: CMS NPPES (public data). Snapshot 2026-07-13.