Quick answers
- Which hospitals does Mark A. Greenberger work at?
- Medicare's official clinician data lists Mark A. Greenberger at 3 hospitals: Northshore University Healthsystem - Evanston Hospital, Northwestern Lake Forest Hospital and Northwestern Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark A. Greenberger see patients?
- Medicare's clinician data lists 2 practice locations, including Highland Park, IL and Lake Forest, IL. Call before your visit to confirm the address.
- What is Mark A. Greenberger's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mark A. Greenberger accept Medicare assignment?
- Yes. Medicare's clinician data says Mark A. Greenberger 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.
- Does Mark A. Greenberger offer telehealth?
- Medicare's clinician data says Mark A. Greenberger offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark A. Greenberger?
- (847) 433-0404, as listed in official Medicare / NPI Registry data.
- What is Mark A. Greenberger's NPI number?
- 1174555742. 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 A. Greenberger works
Medicare's Facility Affiliation Data lists Mark A. Greenberger at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · CCN 140010
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · CCN 140130
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · CCN 140281
Practice locations
Addresses where Mark A. Greenberger is enrolled with Medicare (CMS data updated 2026-10-02).
- 480 Elm Pl, Suite 203Highland Park, IL 60035 (847) 433‑0404
- 900 N Westmoreland Rd, Suite 104Lake Forest, IL 60045 (847) 234‑2488
Group practices
Medicare enrollment lists Mark A. Greenberger as a member of this group (CMS data updated 2026-10-02).
- Mark a Greenberger MD SC2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Highland Park
Clinicians with the same Medicare primary specialty in Highland Park, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1174555742 |
| 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