Quick answers
- Does Clarence J. Vanderlei accept Medicare assignment?
- Yes. Medicare's clinician data says Clarence J. Vanderlei 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 Clarence J. Vanderlei see?
- In 2024, CMS data shows 396 Original Medicare patients and 985 services for Clarence J. Vanderlei. This counts Original Medicare only and measures volume, not quality.
- What is Clarence J. Vanderlei's NPI number?
- 1811347685. 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 Clarence J. Vanderlei, 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 | 396 |
|---|---|
| Services billed to Medicare | 985 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient complete exam of visual system (92014)193 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)140 services
- Imaging of retina (92134)109 services
- Established patient problem focused exam of visual system (92012)98 services
- Imaging of optic nerve (92133)90 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 cholesterol71%
- High blood pressure68%
- Arthritis37%
- Diabetes26%
- Chronic kidney disease20%
- Ischemic heart disease15%
Practice locations
Addresses where Clarence J. Vanderlei is enrolled with Medicare (CMS data updated October 2, 2026).
- 11 Shriner StVermillion, SD 57069 (605) 624‑2020
- 318 E 5th StStorm Lake, IA 50588 (712) 732‑7624
Group practices
Medicare enrollment lists Clarence J. Vanderlei as a member of these groups (CMS data updated October 2, 2026).
- Hawkeye Exact LLC3 clinicians in the group
- Hawkeye Exact SD 1 PLLC3 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Vermillion
Clinicians with the same Medicare primary specialty in Vermillion, SD — not a recommendation.
Other clinicians in Hawkeye Exact 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 | 2016 (10 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811347685 |
| 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