Gregory Ackert, M.D.
NPI 1417991803ActiveIndividual· Internal Medicine, Gastroenterology· New Hyde Park, NY
Internal Medicine, Gastroenterology (M.D.) in New Hyde Park, New York, trained at New York University School of Medicine (class of 1978). Their prescriptions cost Medicare Part D more than their services did: $432,792 for 3,899 claims, against $187,112 paid for services in 2024. Janssen Biotech, Inc. was the largest of 5 companies reporting payments in 2025, $164.60 in all, mostly food and beverage.
Overview
| NPI | 1417991803 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 15, 2006 |
| Last updated in NPPES | Jul 31, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 138398 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 528 |
|---|---|
| Services billed | 1,613 across 31 procedure codes |
| Paid by Medicare | $187,112 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,899 · 8,730 30-day fills |
|---|---|
| Patients | 532 |
| Total drug cost | $432,792 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Gastroenterology |
| Telehealth | Offers telehealth |
Medical groups
- Chs Physician Partners PCRoslyn, NY · 743 clinicians
- Long Island Cardiovascular Imaging Consultants, PCNew Hyde Park, NY · 4 clinicians
Hospital affiliations
- Chsli St Joseph HospitalBethpage, NY
- Good Samaritan Hospital Medical CenterWest Islip, NY
- Long Island Jewish Medical CenterNew Hyde Park, NY
- North Shore University HospitalManhasset, NY
- St Francis Hospital - the Heart CenterRoslyn, NY
Other facilities
- Catholic Home CareHome health agency · Farmingdale, NY
Industry payments (Open Payments)
- 2025$164.60 · 7 payments from 5 companies
- 2024$719.94 · 27 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $53.06 | 2 |
| Boston Scientific Corporation | $44.89 | 2 |
| Inspire Medical Systems, Inc. | $26.35 | 1 |
| Abbott Laboratories | $24.49 | 1 |
| Novo Nordisk Inc | $15.81 | 1 |
What the 2025 payments were for
- Food and Beverage$164.60 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 52 gastroenterologists in New Hyde Park · All gastroenterologists in New York