Gregory Aaron Wallman, DO
NPI 1043324643ActiveIndividual· Internal Medicine· Glenview, IL
Internal Medicine (DO) in Glenview, Illinois, trained at Midwestern University, Chicago College of Osteopathic Med (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $888,097 for 11,003 claims, against $322,045 paid for services in 2024. Axsome Therapeutics, Inc. was the largest of 4 companies reporting payments in 2025, $148.60 in all, mostly food and beverage.
Overview
| NPI | 1043324643 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Aug 19, 2006 |
| Last updated in NPPES | Mar 23, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036107048 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 971 |
|---|---|
| Services billed | 3,774 across 22 procedure codes |
| Paid by Medicare | $322,045 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,003 · 20,111 30-day fills |
|---|---|
| Patients | 777 |
| Total drug cost | $888,097 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Midwestern University, Chicago College of Osteopathic Med |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Covenant Medical Group, LLCGlenview, IL · 8 clinicians
Hospital affiliations
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Northwestern Lake Forest HospitalLake Forest, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Other facilities
- Guardian Home Health Care, LLCHome health agency · Northfield, IL
- Residential Home HealthHome health agency · Northbrook, IL
- Residential Home HealthHome health agency · Schaumburg, IL
- Guardian Healthcare & Hospice, LLCHospice · Northfield, IL
- Heartland Hospice (Northbrook)Hospice · Buffalo Grove, IL
- Journeycare - DeerfieldHospice · Deerfield, IL
- Suncrest Hospice Illinois LLCHospice · Northbrook, IL
- Alden Estates of EvanstonNursing home · Evanston, IL
- Glenview TerraceNursing home · Glenview, IL
- Whitehall of DeerfieldNursing home · Deerfield, IL
Industry payments (Open Payments)
- 2025$148.60 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axsome Therapeutics, Inc. | $61.96 | 2 |
| Sanofi Pasteur Inc. | $45.40 | 2 |
| Pfizer Inc. | $23.44 | 1 |
| Glaxosmithkline, LLC. | $17.80 | 1 |
What the 2025 payments were for
- Food and Beverage$148.60 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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