Quick answers
- Which hospitals does Ronald S. Weiss work at?
- Medicare's official clinician data lists Ronald S. Weiss at 2 hospitals: MacNeal Hospital and Rush University Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ronald S. Weiss see patients?
- Medicare's clinician data lists 2 practice locations, including Chicago, IL and Stickney, IL. Call before your visit to confirm the address.
- What is Ronald S. Weiss's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Ronald S. Weiss accept Medicare assignment?
- Yes. Medicare's clinician data says Ronald S. Weiss 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 Ronald S. Weiss?
- (312) 942-5315, as listed in official Medicare / NPI Registry data.
- What is Ronald S. Weiss's NPI number?
- 1912910019. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ronald S. Weiss works
Medicare's Facility Affiliation Data lists Ronald S. Weiss at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MacNeal HospitalBerwyn, IL · Acute Care Hospital · CCN 140054
- Rush University Medical CenterChicago, IL · Acute Care Hospital · CCN 140119
Practice locations
Addresses where Ronald S. Weiss is enrolled with Medicare (CMS data updated 2026-10-02).
- 1725 W Harrison St, Suite 906Chicago, IL 60612 (312) 942‑5315
- 4401 S Harlem AveStickney, IL 60402 (708) 788‑3400
Group practices
Medicare enrollment lists Ronald S. Weiss as a member of these groups (CMS data updated 2026-10-02).
- Eye Center Physicians, Ltd.39 clinicians in the group
- Ronald S Weiss MD SC6 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912910019 |
| 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