Nathaniel Fastenberg, MD
NPI 1417942905ActiveIndividual· Internal Medicine, Medical Oncology· Mesa, AZ
Internal Medicine, Medical Oncology (MD) in Mesa, Arizona, licensed in AZ, with an NPI issued in September 2005. Glaxosmithkline, LLC. reported $25.43 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1417942905 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 12, 2005 |
| Last updated in NPPES | Jun 4, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 11622 | AZ |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Industry payments (Open Payments)
- 2025$25.43 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $25.43 | 1 |
What the 2025 payments were for
- Food and Beverage$25.43 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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