Quick answers
- Which hospitals does Mark J. Piotrowski work at?
- Medicare's official clinician data lists Mark J. Piotrowski at 2 hospitals: Alexian Brothers Medical Center 1 and St Alexius Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark J. Piotrowski see patients?
- Medicare's clinician data lists 2 practice locations, including Arlington Hts, IL and Hoffman Est, IL. Call before your visit to confirm the address.
- What is Mark J. Piotrowski's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Mark J. Piotrowski accept Medicare assignment?
- Yes. Medicare's clinician data says Mark J. Piotrowski accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Mark J. Piotrowski?
- (847) 253-4040, as listed in official Medicare / NPI Registry data.
- What is Mark J. Piotrowski's NPI number?
- 1417059114. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark J. Piotrowski works
Medicare's Facility Affiliation Data lists Mark J. Piotrowski at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alexian Brothers Medical Center 1Elk Grove Village, IL · Acute Care Hospital · CCN 140258
- St Alexius Medical CenterHoffman Estates, IL · Acute Care Hospital · CCN 140290
Practice locations
Addresses where Mark J. Piotrowski is enrolled with Medicare (CMS data updated 2026-10-02).
- 1100 W Central Rd, Suite 205Arlington Hts, IL 60005 (847) 253‑4040
- 1555 Barrington Rd, Suite 3150Hoffman Est, IL 60194 (847) 885‑4040
Group practices
Medicare enrollment lists Mark J. Piotrowski as a member of this group (CMS data updated 2026-10-02).
- Suburban Associates in Ophthalmology LLC9 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Arlington Hts
Clinicians with the same Medicare primary specialty in Arlington Hts, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417059114 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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