Quick answers
- Does Helen Sagal-Marshalkovich accept Medicare assignment?
- Medicare's clinician data says Helen Sagal-Marshalkovich may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Helen Sagal-Marshalkovich's NPI number?
- 1700996592. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Helen Sagal-Marshalkovich is enrolled with Medicare (CMS data updated October 2, 2026).
- 840 Willow Rd, Suite NNorthbrook, IL 60062 (847) 412‑1521
Group practices
Medicare enrollment lists Helen Sagal-Marshalkovich as a member of this group (CMS data updated October 2, 2026).
- Luxottica of America Inc13 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Northbrook
Clinicians with the same Medicare primary specialty in Northbrook, IL — not a recommendation.
Other clinicians in Luxottica of America 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 | 1990 (36 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1700996592 |
| 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
- 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