Orthoptist providers in the U.S.
40 NPPES records list orthoptist as their primary taxonomy; Michigan and Minnesota have the most per resident. A registry record is not proof of an active practice.
What taxonomy code 156FX1900X means
156FX1900X is the National Uniform Claim Committee code for Technician/Technologist, Orthoptist, in the grouping Eye and Vision Services Providers. 40 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
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.
Source: NUCC Health Care Provider Taxonomy code set, definition as NUCC publishes it (nucc.org); counts from CMS NPPES.
Most per resident: the 8 highest
Source: CMS NPPES, primary taxonomy 156FX1900X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Grand Rapids has the most, 5
Source: CMS NPPES, primary taxonomy 156FX1900X by practice city, file of Aug 9, 2026.
All 19 states and D.C. with records, by state
| State | Records | Per 100,000 |
|---|---|---|
| California | 3 | 0.0 |
| Colorado | 1 | 0.0 |
| Connecticut | 1 | 0.0 |
| District of Columbia | 1 | 0.1 |
| Florida | 4 | 0.0 |
| Georgia | 2 | 0.0 |
| Idaho | 2 | 0.1 |
| Illinois | 2 | 0.0 |
| Massachusetts | 2 | 0.0 |
| Michigan | 7 | 0.1 |
| State | Records | Per 100,000 |
|---|---|---|
| Minnesota | 3 | 0.1 |
| Mississippi | 1 | 0.0 |
| Missouri | 1 | 0.0 |
| Nebraska | 1 | 0.1 |
| New York | 2 | 0.0 |
| North Carolina | 1 | 0.0 |
| Oregon | 1 | 0.0 |
| Texas | 3 | 0.0 |
| Virginia | 2 | 0.0 |
In federal data
- NUCC code156FX1900X · Technician/Technologist
- Size rank587th of 688 specialties by records (0% of all)
- In its family9th of 10 Technician/Technologist codes, 0.3% of the family
- Concentration5 states hold half of all records
Source: CMS NPPES; Medicare Part D Prescriber PUF; CMS Open Payments 2024. Presence in these files is not a quality judgment.
A sample of orthoptist records
- Sabrina ParkLaguna Woods, CA1578021697
- Elizabeth VargasLaguna Woods, CA1699233569
- Amanda Yonkers, COPortola Valley, CA1619490547
- Felicia Korpi, CO, COMTFort Collins, CO1982447769
- Justyna Szczygiel, MS,CONewington, CT1104650100
- Renee Parker, CAREGIVERWashington, DC1831806462
- Randyn McMillan, CO, LDOCrestview, FL1124775168
- Eileen Cruz, LDOOrlando, FL1609635499
- Wanda Pfeifer, MME, CO, COMT, OC(C)Palm Beach Gardens, FL1841180726
- Clara BerrymanTampa, FL1497114680
- Jeffery White, MASTER BARBERMacon, GA1770183709
- Daniel Ostermann, BMEColumbus, GA1902605975
Registry order, not a ranking. Search by name to find one provider.
Common questions
Why is Orthoptist a thin NUCC code in NPPES?
Only 40 NPIs list Orthoptist as primary taxonomy across 19 states (peak Michigan, 7). That is 587th of 688 NUCC codes by headcount. Thin codes are still searchable by NPI; do not treat the low count as a quality signal.
Where can I still find an Orthoptist?
Orthoptist providers are listed in 19 states; Grand Rapids leads by raw city count. By national headcount this code sits just above Human Factors Occupational Therapist and just below Geropsychiatric Psychiatric/Mental Health Clinical Nurse Specialist. Browse by state or search by name.
What does NUCC code 156FX1900X mean?
Orthoptist is NUCC taxonomy 156FX1900X in the Technician/Technologist group. Counts are self-designated primary taxonomy at NPI enrollment, not board certification.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy (nucc.org); Medicare Part D Prescriber PUF; CMS Open Payments 2024. Counts are self-designated primary taxonomy, not board certification.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.