Gregory Salvatore Rihacek, MD
NPI 1114992773ActiveIndividual· Internal Medicine, Rheumatology· Somerset, NJ
Internal Medicine, Rheumatology (MD) in Somerset, New Jersey, trained at Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc) (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $5,911,759 for 5,200 claims, against $121,524 paid for services in 2024. Ani Pharmaceuticals, Inc. was the largest of 21 companies reporting payments in 2025, $21,864 in all, mostly honoraria.
Overview
| NPI | 1114992773 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 17, 2006 |
| Last updated in NPPES | May 13, 2026 |
| Certified by provider | May 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 25MA06373000 | 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 - Internal Medicine (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 318 |
|---|---|
| Services billed | 3,651 across 24 procedure codes |
| Paid by Medicare | $121,524 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,200 · 8,016 30-day fills |
|---|---|
| Patients | 388 |
| Total drug cost | $5,911,759 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc) |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Rheumatology |
Medical group
- Cmc Department of Medicine Group PACamden, NJ · 478 clinicians
Hospital affiliations
- Cooper University HospitalCamden, NJ
- Saint Peter's University HospitalNew Brunswick, NJ
Industry payments (Open Payments)
- 2025$21,864 · 275 payments from 21 companies
- 2024$14,750 · 235 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ani Pharmaceuticals, Inc. | $7,031 | 14 |
| E.R. Squibb & Sons, L.L.C. | $5,833 | 19 |
| Amgen Inc. | $3,703 | 36 |
| Janssen Biotech, Inc. | $1,734 | 57 |
| Abbvie Inc. | $1,002 | 45 |
What the 2025 payments were for
- Honoraria$6,663 · 3 payments
- Food and Beverage$6,401 · 261 payments
- Consulting Fee$4,793 · 1 payment
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$2,835 · 2 payments
- Travel and Lodging$896.62 · 5 payments
- Education$276.98 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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