Quick answers
- Which hospitals does Gregory A. Wallman work at?
- Medicare's official clinician data lists Gregory A. Wallman at 3 hospitals: Northshore University Healthsystem - Evanston Hospital, Northwestern Lake Forest Hospital and Northwestern Medicine Central Dupage Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory A. Wallman see patients?
- Medicare's clinician data lists 1 practice location in Glenview, IL. Call before your visit to confirm the address.
- What is Gregory A. Wallman's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Gregory A. Wallman accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. Wallman 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 Gregory A. Wallman offer telehealth?
- Medicare's clinician data says Gregory A. Wallman offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory A. Wallman?
- (847) 901-5200, as listed in official Medicare / NPI Registry data.
- What is Gregory A. Wallman's NPI number?
- 1043324643. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory A. Wallman works
Medicare's Facility Affiliation Data lists Gregory A. Wallman 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 Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
Practice locations
Addresses where Gregory A. Wallman is enrolled with Medicare (CMS data updated 2026-10-02).
- 2501 Compass Rd, Suite 100Glenview, IL 60026 (847) 901‑5200
Group practices
Medicare enrollment lists Gregory A. Wallman as a member of this group (CMS data updated 2026-10-02).
- Covenant Medical Group, LLC8 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Glenview
Clinicians with the same Medicare primary specialty in Glenview, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Midwestern University, Chicago College Of Osteopathic Med |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1043324643 |
| 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