Michael M. Mainero, M.D.
NPI 1720090079ActiveIndividual· Internal Medicine, Gastroenterology· West Paterson, NJ
Internal Medicine, Gastroenterology (M.D.) with Gastroenterology Associates of New Jersey LLC, practicing in West Paterson, New Jersey. 666 Medicare patients in 2024, $658,588 paid; nearly all of their 2,861 Part D prescriptions were generic (90%). Abbvie Inc. was the largest of 18 companies reporting payments in 2025, $949.93 in all, mostly food and beverage. Lists St Joseph's University Medical Center Inc as a hospital affiliation.
Overview
| NPI | 1720090079 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 13, 2006 |
| Last updated in NPPES | Dec 15, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | NJ55027 | 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 - Gastroenterology (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 666 |
|---|---|
| Services billed | 35,838 across 45 procedure codes |
| Paid by Medicare | $658,588 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,861 · 6,241 30-day fills |
|---|---|
| Patients | 504 |
| Total drug cost | $528,481 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Gastroenterology Associates of New Jersey LLCRidgewood, NJ · 80 clinicians
Hospital affiliation
- St Joseph's University Medical Center IncPaterson, NJ
Industry payments (Open Payments)
- 2025$949.93 · 56 payments from 18 companies
- 2024$987.29 · 57 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $323.56 | 21 |
| Madrigal Pharmaceuticals | $114.29 | 7 |
| Phathom Pharmaceuticals, Inc. | $71.82 | 5 |
| Qol Medical, LLC | $59.46 | 3 |
| Aimmune Therapeutics, Inc. | $54.75 | 3 |
What the 2025 payments were for
- Food and Beverage$949.93 · 56 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in West Paterson
- 1194976019
- 1447299623
- 1710045273