Gregory Aaron Breuer, MD, PHD
NPI 1629652417ActiveIndividual· Internal Medicine, Hematology & Oncology· New Haven, CT
Internal Medicine, Hematology & Oncology (MD, PHD) in New Haven, Connecticut, licensed in CT, with an NPI issued in May 2021. Part D covered 15 prescriptions written in 2024, 73% of them generic.
Overview
| NPI | 1629652417 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | May 8, 2021 |
| Last updated in NPPES | Sep 16, 2024 |
| Certified by provider | Sep 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 1.076379 | CT |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Order and Referring Only - Internal Medicine (CT) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 15 · 23 30-day fills |
|---|---|
| Total drug cost | $443.46 |
| Generic share | 73% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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