Quick answers
- Which hospitals does Stephen W. Ganshirt work at?
- Medicare's official clinician data lists Stephen W. Ganshirt at 2 hospitals: Northwestern Lake Forest Hospital and Northwestern Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen W. Ganshirt see patients?
- Medicare's clinician data lists 10 practice locations, including Lake Forest, IL, Grayslake, IL and Chicago, IL. Call before your visit to confirm the address.
- What is Stephen W. Ganshirt's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Stephen W. Ganshirt accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen W. Ganshirt 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 Stephen W. Ganshirt?
- (847) 535-8500, as listed in official Medicare / NPI Registry data.
- What is Stephen W. Ganshirt's NPI number?
- 1245200757. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen W. Ganshirt works
Medicare's Facility Affiliation Data lists Stephen W. Ganshirt at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · CCN 140130
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · CCN 140281
Practice locations
Addresses where Stephen W. Ganshirt is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.
- 1000 N Westmoreland Rd, Pavillion B 3rd FlLake Forest, IL 60045 (847) 535‑8500
- 1000 Westmoreland RdLake Forest, IL 60045 (847) 234‑5600
- 1475 E Belvidere RdGrayslake, IL 60030
- 600 N Westmoreland Rd, Suite 1100Lake Forest, IL 60045 (847) 535‑9510
- 660 N Westmoreland RdLake Forest, IL 60045 (847) 234‑5600
Group practices
Medicare enrollment lists Stephen W. Ganshirt as a member of this group (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Lake Forest
Clinicians with the same Medicare primary specialty in Lake Forest, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245200757 |
| 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