Puneet Dhillon Grewal, M.D.
NPI 1003048745ActiveIndividual· Internal Medicine, Cardiovascular Disease· Chicago, IL
Internal Medicine, Cardiovascular Disease (M.D.) with Mount Sinai Community Foundation, practicing in Chicago, Illinois. Medicare paid $72,277 for services to 609 patients in 2024, and Part D covered 249 of their prescriptions (88% generic). Bayer Healthcare Pharmaceuticals Inc. was the largest of 9 companies reporting payments in 2025, $546.14 in all, mostly food and beverage. Lists Holy Cross Hospital and 1 other hospital as a hospital affiliation.
Overview
| NPI | 1003048745 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 13, 2009 |
| Last updated in NPPES | Apr 16, 2026 |
| Certified by provider | Apr 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 036131243 | IL |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | A151270 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 609 |
|---|---|
| Services billed | 1,342 across 21 procedure codes |
| Paid by Medicare | $72,277 |
Part D prescriptions in 2024
| Prescriptions (claims) | 249 · 571 30-day fills |
|---|---|
| Patients | 72 |
| Total drug cost | $31,446 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Mount Sinai Community FoundationChicago, IL · 248 clinicians
Hospital affiliations
- Holy Cross HospitalChicago, IL
- Mt Sinai Hospital Medical CenterChicago, IL
Industry payments (Open Payments)
- 2025$546.14 · 26 payments from 9 companies
- 2024$577.01 · 27 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $102.71 | 4 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $96.01 | 4 |
| Merck Sharp & Dohme LLC | $95.57 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $87.36 | 5 |
| E.R. Squibb & Sons, L.L.C. | $63.78 | 3 |
What the 2025 payments were for
- Food and Beverage$525.92 · 25 payments
- Education$20.22 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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