Quick answers
- Does Terry G. Voirin accept Medicare assignment?
- Yes. Medicare's clinician data says Terry G. Voirin 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 Terry G. Voirin see?
- In 2024, CMS data shows 2,423 Original Medicare patients and 3,589 services for Terry G. Voirin. This counts Original Medicare only and measures volume, not quality.
- What is Terry G. Voirin's NPI number?
- 1912934670. 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 Terry G. Voirin, 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 | 2,423 |
|---|---|
| Services billed to Medicare | 3,589 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient complete exam of visual system (92014)2,280 services
- Established patient problem focused exam of visual system (92012)383 services
- Imaging of optic nerve (92133)318 services
- Exam of visual field with extended testing (92083)236 services
- Imaging of retina (92134)194 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 cholesterol75%
- High blood pressure71%
- Arthritis46%
- Diabetes28%
- Ischemic heart disease26%
- Chronic kidney disease22%
Practice locations
Addresses where Terry G. Voirin is enrolled with Medicare (CMS data updated October 2, 2026).
- 2015 N Main StWheaton, IL 60187 (630) 668‑8250
- 604 Raymond DrNaperville, IL 60563 (630) 668‑8250
Group practices
Medicare enrollment lists Terry G. Voirin as a member of this group (CMS data updated October 2, 2026).
- Wheaton Eye Clinic Ltd44 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Wheaton
Clinicians with the same Medicare primary specialty in Wheaton, IL — not a recommendation.
Other clinicians in Wheaton Eye Clinic Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Midwestern University, Chicago College Of Osteopathic Med |
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912934670 |
| 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