Tobby Mathew, M.D.
NPI 1962701342ActiveIndividual· Internal Medicine· Naperville, IL
Internal Medicine (M.D.) with Dupage Medical Group Ltd, practicing in Naperville, Illinois. Their prescriptions cost Medicare Part D more than their services did: $735,352 for 6,598 claims, against $183,256 paid for services in 2024. Lilly USA, LLC was the largest of 10 companies reporting payments in 2025, $529.03 in all, mostly food and beverage. Lists Edward Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1962701342 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 24, 2011 |
| Last updated in NPPES | Aug 16, 2023 |
| Certified by provider | Aug 16, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-134706 | 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 | 420 |
|---|---|
| Services billed | 8,268 across 92 procedure codes |
| Paid by Medicare | $183,256 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,598 · 17,337 30-day fills |
|---|---|
| Patients | 632 |
| Total drug cost | $735,352 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
Hospital affiliations
- Edward HospitalNaperville, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Other facilities
- Residential Home HealthHome health agency · Lisle, IL
Industry payments (Open Payments)
- 2025$529.03 · 26 payments from 10 companies
- 2024$720.10 · 35 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $117.12 | 5 |
| Astrazeneca Pharmaceuticals LP | $99.70 | 5 |
| Amgen Inc. | $77.86 | 4 |
| Novo Nordisk Inc | $67.94 | 3 |
| Abbvie Inc. | $59.48 | 3 |
What the 2025 payments were for
- Food and Beverage$529.03 · 26 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 114 internal medicine physicians in Naperville · All internal medicine physicians in Illinois