Quick answers
- Which hospitals does Joseph R. Leventhal work at?
- Medicare's official clinician data lists Joseph R. Leventhal at 1 hospital: Northwestern Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Joseph R. Leventhal see patients?
- Medicare's clinician data lists 10 practice locations, including Chicago, IL, Lake Forest, IL and Wheaton, IL. Call before your visit to confirm the address.
- What is Joseph R. Leventhal's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Joseph R. Leventhal accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph R. Leventhal 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 Joseph R. Leventhal?
- (312) 926-6146, as listed in official Medicare / NPI Registry data.
- What is Joseph R. Leventhal's NPI number?
- 1124050406. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joseph R. Leventhal works
Medicare's Facility Affiliation Data lists Joseph R. Leventhal at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · CCN 140281
Practice locations
Addresses where Joseph R. Leventhal is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.
- 251 E HuronChicago, IL 60611
- 251 E Huron StChicago, IL 60611
- 4445 W Irving Park RdChicago, IL 60641
- 660 N Westmoreland Rd, 302 Lake Forest ObgynLake Forest, IL 60045 (312) 926‑6146
- 675 N Saint Clair StChicago, IL 60611
Group practices
Medicare enrollment lists Joseph R. Leventhal 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 Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124050406 |
| 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