Neal A. Fischbach, MD
NPI 1588758718ActiveIndividual· Internal Medicine, Hematology & Oncology· Trumbull, CT
Internal Medicine, Hematology & Oncology (MD) in Trumbull, Connecticut, trained at Harvard Medical School (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $3,235,676 for 1,900 claims, against $49,661 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 2 companies reporting payments in 2025, $154.99 in all, mostly food and beverage.
Overview
| NPI | 1588758718 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 3, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 042999 | CT |
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 - Medical Oncology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 299 |
|---|---|
| Services billed | 634 across 13 procedure codes |
| Paid by Medicare | $49,661 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,900 · 3,557 30-day fills |
|---|---|
| Patients | 330 |
| Total drug cost | $3,235,676 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Harvard Medical School |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Yale UniversityNew Haven, CT · 2,645 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Greenwich Hospital Association -Greenwich, CT
- Yale-New Haven HospitalNew Haven, CT
Other facilities
- Home Care Plus, IncHospice · Guilford, CT
Industry payments (Open Payments)
- 2025$154.99 · 2 payments from 2 companies
- 2024$27.19 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $124.99 | 1 |
| Lilly USA, LLC | $30.00 | 1 |
What the 2025 payments were for
- Food and Beverage$154.99 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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