Steven Nalonnil Mathews, M.D.
NPI 1437680832ActiveIndividual· Internal Medicine, Gastroenterology· Flemington, NJ
Internal Medicine, Gastroenterology (M.D.) with Hunterdon Gastroenterology Associates, PA, practicing in Flemington, New Jersey. In 2024 Medicare paid $152,405 for 357 patients, and Part D covered 546 of their prescriptions, 85% of them generic. Abbvie Inc. reported $20.60 in payments in 2025, mostly food and beverage. Lists Hunterdon Medical Center as a hospital affiliation.
Overview
| NPI | 1437680832 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 27, 2017 |
| Last updated in NPPES | Nov 2, 2023 |
| Certified by provider | Nov 2, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 25MA11698500 | NJ |
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 - Gastroenterology (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 357 |
|---|---|
| Services billed | 5,201 across 34 procedure codes |
| Paid by Medicare | $152,405 |
Part D prescriptions in 2024
| Prescriptions (claims) | 546 · 749 30-day fills |
|---|---|
| Patients | 295 |
| Total drug cost | $35,548 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Hunterdon Gastroenterology Associates, PAFlemington, NJ · 11 clinicians
Hospital affiliation
- Hunterdon Medical CenterFlemington, NJ
Industry payments (Open Payments)
- 2025$20.60 · 1 payment from 1 company
- 2024$15.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $20.60 | 1 |
What the 2025 payments were for
- Food and Beverage$20.60 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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