Quick answers
- Does Nicholas A. Chiaramonti accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas A. Chiaramonti 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 Nicholas A. Chiaramonti see?
- In 2024, CMS data shows 14 Original Medicare patients and 14 services for Nicholas A. Chiaramonti. This counts Original Medicare only and measures volume, not quality.
- What is Nicholas A. Chiaramonti's NPI number?
- 1841262540. 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 Nicholas A. Chiaramonti, 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 | 14 |
|---|---|
| Services billed to Medicare | 14 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
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 pressure75%
- High cholesterol75%
Practice locations
Addresses where Nicholas A. Chiaramonti is enrolled with Medicare (CMS data updated October 2, 2026).
- 145 Ogden AveDowners Grove, IL 60515 (630) 749‑2020
- 4196 Il Route 83Long Grove, IL 60047 (847) 955‑9999
- 698 Roosevelt RdGlen Ellyn, IL 60137 (630) 545‑2020
Group practices
Medicare enrollment lists Nicholas A. Chiaramonti as a member of this group (CMS data updated October 2, 2026).
- Rosin Optical Co Inc51 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Downers Grove
Clinicians with the same Medicare primary specialty in Downers Grove, IL — not a recommendation.
Other clinicians in Rosin Optical Co Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Illinois College Of Optometry At Chicago |
| Graduation year | 1992 (34 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841262540 |
| 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