Matthew Aaron Grossman, M.D.
NPI 1063618908ActiveIndividual· Internal Medicine, Gastroenterology· Morristown, NJ
Internal Medicine, Gastroenterology (M.D.) in Morristown, New Jersey, trained at Rutgers New Jersey Medical School (class of 2004). In 2024 Medicare paid $96,107 for 294 patients, and Part D covered 171 of their prescriptions, 70% of them generic. 3-D Matrix, Inc. was the largest of 19 companies reporting payments in 2025, $1,758 in all, mostly food and beverage.
Overview
| NPI | 1063618908 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 26, 2007 |
| Last updated in NPPES | Jan 4, 2023 |
| Certified by provider | Jan 4, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 25MA08998700 | NJ |
| Internal Medicine, Gastroenterology | 207RG0100X | 241241 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 294 |
|---|---|
| Services billed | 741 across 79 procedure codes |
| Paid by Medicare | $96,107 |
Part D prescriptions in 2024
| Prescriptions (claims) | 171 · 304 30-day fills |
|---|---|
| Patients | 84 |
| Total drug cost | $115,409 |
| Generic share | 70% of claims |
Education and affiliations
| Medical school | Rutgers New Jersey Medical School |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Practice Associates Medical GroupSummit, NJ · 1,408 clinicians
Hospital affiliations
- Chilton Medical CenterPompton Plains, NJ
- Morristown Medical CenterMorristown, NJ
- Newton Medical CenterNewton, NJ
Industry payments (Open Payments)
- 2025$1,758 · 35 payments from 19 companies
- 2024$1,269 · 45 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| 3-D Matrix, Inc. | $284.12 | 1 |
| Genzyme Corporation | $211.53 | 3 |
| Merit Medical Systems Inc | $198.75 | 1 |
| Amgen Inc. | $176.37 | 3 |
| Pfizer Inc. | $152.14 | 5 |
What the 2025 payments were for
- Food and Beverage$1,758 · 35 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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