Walter Reid Glaws, D O
NPI 1104828532ActiveIndividual· Internal Medicine, Gastroenterology· Gurnee, IL
Internal Medicine, Gastroenterology (D O) in Gurnee, Illinois, trained at New York College of Osteo Medicine of New York Institute of Technology (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $870,767 for 2,092 claims, against $370,913 paid for services in 2024. Janssen Biotech, Inc. was the largest of 19 companies reporting payments in 2025, $3,864 in all, mostly food and beverage.
Overview
| NPI | 1104828532 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D O |
| Sole proprietor | No |
| NPI issued | Aug 15, 2005 |
| Last updated in NPPES | Dec 28, 2021 |
| Certified by provider | Dec 28, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036-084001 | 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 - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 505 |
|---|---|
| Services billed | 16,917 across 52 procedure codes |
| Paid by Medicare | $370,913 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,092 · 3,513 30-day fills |
|---|---|
| Patients | 620 |
| Total drug cost | $870,767 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | New York College of Osteo Medicine of New York Institute of Technology |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Illinois Gastroenterology Group LLCArlington Heights, IL · 115 clinicians
Hospital affiliations
- Advocate Condell Medical CenterLibertyville, IL
- Advocate Good Shepherd HospitalBarrington, IL
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Northwestern Lake Forest HospitalLake Forest, IL
- Vista Medical Center EastWaukegan, IL
Industry payments (Open Payments)
- 2025$3,864 · 230 payments from 19 companies
- 2024$2,789 · 201 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $964.88 | 69 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $587.73 | 32 |
| Abbvie Inc. | $485.10 | 30 |
| Takeda Pharmaceuticals U.S.A., Inc. | $459.73 | 26 |
| Pfizer Inc. | $298.37 | 22 |
What the 2025 payments were for
- Food and Beverage$3,780 · 229 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Gastroenterology providers in Illinois →