Quick answers
- Does Trey M. Thomsen accept Medicare assignment?
- Yes. Medicare's clinician data says Trey M. Thomsen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Trey M. Thomsen see?
- In 2024, CMS data shows 431 Original Medicare patients and 667 services for Trey M. Thomsen. This counts Original Medicare only and measures volume, not quality.
- What is Trey M. Thomsen's NPI number?
- 1285203190. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Trey M. Thomsen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 431 |
|---|---|
| Services billed to Medicare | 667 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient complete exam of visual system (92014)240 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)133 services
- Imaging of retina (92134)57 services
- New patient complete exam of visual system (92004)51 services
- Removal of cataract with insertion of prosthetic lens (66984)36 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure72%
- High cholesterol65%
- Arthritis40%
- Diabetes26%
- Chronic kidney disease25%
- Ischemic heart disease18%
Practice locations
Addresses where Trey M. Thomsen is enrolled with Medicare (CMS data updated October 2, 2026).
- 514 N 4th StRed Oak, IA 51566 (712) 623‑9433
- 807 N Sumner AveCreston, IA 50801 (641) 782‑2111
Group practices
Medicare enrollment lists Trey M. Thomsen as a member of this group (CMS data updated October 2, 2026).
- Eye Care Associates of Co LLC66 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Other clinicians in Eye Care Associates of Co LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | University Of Houston - College Of Optometry |
| Graduation year | 2021 (5 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285203190 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians