Nauman A. Diwan, MD
NPI 1609802057ActiveIndividual· Internal Medicine· Hamilton, NJ
Internal Medicine (MD) with Capital Health Medical Group, practicing in Hamilton, New Jersey. Their prescriptions cost Medicare Part D more than their services did: $841,360 for 6,620 claims, against $53,478 paid for services in 2024. Lilly USA, LLC was the largest of 6 companies reporting payments in 2025, $311.09 in all, mostly food and beverage. Lists Capital Health Medical Center - Hopewell and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1609802057 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 25, 2006 |
| Last updated in NPPES | Apr 30, 2021 |
| Certified by provider | Apr 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 25MA06535300 | NJ |
| Legal Medicine | 173000000X | 25MA06535300 | NJ |
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 (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 174 |
|---|---|
| Services billed | 784 across 27 procedure codes |
| Paid by Medicare | $53,478 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,620 · 13,897 30-day fills |
|---|---|
| Patients | 402 |
| Total drug cost | $841,360 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Capital Health Medical GroupPennington, NJ · 440 clinicians
Hospital affiliations
- Capital Health Medical Center - HopewellPennington, NJ
- Robert Wood Johnson University Hospital at HamiltonHamilton, NJ
- University Medical Center of Princeton at PlainsboroPlainsboro, NJ
Other facilities
- Mercer CareHome health agency · Bordentown, NJ
Industry payments (Open Payments)
- 2025$311.09 · 12 payments from 6 companies
- 2024$261.95 · 16 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $135.68 | 2 |
| Astrazeneca Pharmaceuticals LP | $62.12 | 4 |
| Novo Nordisk Inc | $56.53 | 3 |
| Exact Sciences Corporation | $26.50 | 1 |
| Glaxosmithkline, LLC. | $16.52 | 1 |
What the 2025 payments were for
- Food and Beverage$311.09 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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