Gregory Charles Mallo, M.D.
NPI 1245412295ActiveIndividual· Orthopaedic Surgery· East Setauket, NY
Orthopaedic Surgery (M.D.) in East Setauket, New York, trained at Jefferson Medical College of Thomas Jefferson University (class of 2005). 659 Medicare patients in 2024, $452,152 paid; all of their 410 Part D prescriptions were generic. Medical Device Business Services, Inc. was the largest of 4 companies reporting payments in 2025, $17,739 in all, mostly consulting fees.
Overview
| NPI | 1245412295 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 1, 2007 |
| Last updated in NPPES | Nov 18, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 280603 | 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 - Orthopedic Surgery (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 659 |
|---|---|
| Services billed | 4,068 across 45 procedure codes |
| Paid by Medicare | $452,152 |
Part D prescriptions in 2024
| Prescriptions (claims) | 410 · 414 30-day fills |
|---|---|
| Patients | 236 |
| Total drug cost | $2,999 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- True North Medical Group PCCedarhurst, NY · 188 clinicians
Hospital affiliations
- John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY
- St Charles HospitalPort Jefferson, NY
- Suny/Stony Brook University HospitalStony Brook, NY
Other facilities
- Peconic Bay Homehealth ServicesHome health agency · Riverhead, NY
Industry payments (Open Payments)
- 2025$17,739 · 24 payments from 4 companies
- 2024$344.27 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medical Device Business Services, Inc. | $16,767 | 13 |
| Depuy Synthes Sales Inc. | $713.89 | 9 |
| Polaris Technology Solutions LLC | $243.13 | 1 |
| Zimmer Biomet Holdings, Inc. | $14.66 | 1 |
What the 2025 payments were for
- Consulting Fee$15,926 · 3 payments
- Travel and Lodging$979.26 · 4 payments
- Food and Beverage$833.77 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 19 orthopedic surgeons in East Setauket · All orthopedic surgeons in New York