Vignesh Chidambaram, MD, MPH
NPI 1003496449ActiveIndividual· Internal Medicine, Cardiovascular Disease· Chicago, IL
Internal Medicine, Cardiovascular Disease (MD, MPH) in Chicago, Illinois, licensed in IL, with an NPI issued in April 2021. Part D covered 573 prescriptions written in 2024, 86% of them generic. Medtronic, Inc. was the largest of 4 companies reporting payments in 2025, $212.86 in all, mostly food and beverage.
Overview
| NPI | 1003496449 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MPH |
| Sole proprietor | Yes |
| NPI issued | Apr 9, 2021 |
| Last updated in NPPES | Aug 5, 2024 |
| Certified by provider | Aug 5, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 036.170506 | IL |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 Order and Referring Only - Internal Medicine (AR) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 573 · 1,001 30-day fills |
|---|---|
| Patients | 105 |
| Total drug cost | $50,094 |
| Generic share | 86% of claims |
Industry payments (Open Payments)
- 2025$212.86 · 9 payments from 4 companies
- 2024$185.66 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $67.21 | 3 |
| Boston Scientific Corporation | $59.08 | 2 |
| Abbott Laboratories | $49.05 | 2 |
| Daxor Corporation | $37.52 | 2 |
What the 2025 payments were for
- Food and Beverage$212.86 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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