Quick answers
- Does Mary Ann Rosanova-Kaper accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Ann Rosanova-Kaper 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 Mary Ann Rosanova-Kaper see?
- In 2024, CMS data shows 113 Original Medicare patients and 264 services for Mary Ann Rosanova-Kaper. This counts Original Medicare only and measures volume, not quality.
- What is Mary Ann Rosanova-Kaper's NPI number?
- 1548255474. 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 Mary Ann Rosanova-Kaper, 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 | 113 |
|---|---|
| Services billed to Medicare | 264 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Established patient problem focused exam of visual system (92012)99 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)91 services
- Imaging of optic nerve (92133)19 services
- Exam of visual field with extended testing (92083)14 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 pressure74%
- Arthritis51%
- Ischemic heart disease31%
- Chronic kidney disease23%
- Diabetes22%
Practice locations
Addresses where Mary Ann Rosanova-Kaper is enrolled with Medicare (CMS data updated October 2, 2026).
- 101 Lions Dr, Suite 120Barrington, IL 60010 (847) 381‑4300
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 1966 (60 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548255474 |
| 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