Andrew L. Himelstein, MD
NPI 1841269966ActiveIndividual· Internal Medicine, Hematology & Oncology· Newark, DE
Internal Medicine, Hematology & Oncology (MD) in Newark, Delaware, licensed in DE, with an NPI issued in March 2006. Their prescriptions cost Medicare Part D more than their services did: $3,805,068 for 1,499 claims, against $2,526,509 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 4 companies reporting payments in 2025, $92.80 in all, mostly food and beverage.
Overview
| NPI | 1841269966 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 14, 2006 |
| Last updated in NPPES | Feb 28, 2020 |
| Certified by provider | Feb 28, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | CI0003651 | DE |
| Family Medicine, Hospice and Palliative Medicine | 207QH0002X | CI0003651 | DE |
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 Practitioner - Hematology/Oncology (DE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 494 |
|---|---|
| Services billed | 84,355 across 112 procedure codes |
| Paid by Medicare | $2,526,509 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,499 · 2,622 30-day fills |
|---|---|
| Patients | 262 |
| Total drug cost | $3,805,068 |
| Generic share | 72% of claims |
Industry payments (Open Payments)
- 2025$92.80 · 4 payments from 4 companies
- 2024$40.65 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $32.97 | 1 |
| Glaxosmithkline, LLC. | $22.84 | 1 |
| Pfizer Inc. | $19.71 | 1 |
| Gilead Sciences, Inc. | $17.28 | 1 |
What the 2025 payments were for
- Food and Beverage$92.80 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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