Robert I. Greenblatt, M.D.
NPI 1861580433ActiveIndividual· Internal Medicine, Gastroenterology· Union, NJ
Internal Medicine, Gastroenterology (M.D.) in Union, New Jersey, trained at University of Southern California Keck School of Medicine (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $359,580 for 1,405 claims, against $63,871 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 4 companies reporting payments in 2025, $87.36 in all, mostly food and beverage.
Overview
| NPI | 1861580433 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Oct 10, 2006 |
| Last updated in NPPES | Dec 13, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 25MA04478800 | 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 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 | 222 |
|---|---|
| Services billed | 635 across 22 procedure codes |
| Paid by Medicare | $63,871 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,405 · 3,027 30-day fills |
|---|---|
| Patients | 348 |
| Total drug cost | $359,580 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Gastroenterology |
Medical group
- Rf Ledon MD PCUnion, NJ · 18 clinicians
Industry payments (Open Payments)
- 2025$87.36 · 5 payments from 4 companies
- 2024$32.08 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $34.23 | 2 |
| Novo Nordisk Inc | $18.60 | 1 |
| Pfizer Inc. | $17.89 | 1 |
| Intercept Pharmaceuticals, Inc. | $16.64 | 1 |
What the 2025 payments were for
- Food and Beverage$87.36 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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