Michael Naarendorp, M.D.
NPI 1740256908ActiveIndividual· Internal Medicine, Rheumatology· New York, NY
Internal Medicine, Rheumatology (M.D.) in New York, New York, licensed in NY, with an NPI issued in February 2006. Their prescriptions cost Medicare Part D more than their services did: $4,734,934 for 4,650 claims, against $45,768 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 21 companies reporting payments in 2025, $6,186 in all, mostly food and beverage.
Overview
| NPI | 1740256908 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 27, 2006 |
| Last updated in NPPES | Mar 13, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 229836 | 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 - Rheumatology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 2,331 across 19 procedure codes |
| Paid by Medicare | $45,768 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,650 · 5,355 30-day fills |
|---|---|
| Patients | 426 |
| Total drug cost | $4,734,934 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Rheumatology |
| Secondary specialties | Internal Medicine |
Industry payments (Open Payments)
- 2025$6,186 · 216 payments from 21 companies
- 2024$4,489 · 171 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $1,056 | 37 |
| Amgen Inc. | $932.90 | 21 |
| Pfizer Inc. | $607.15 | 40 |
| Ucb, Inc. | $599.11 | 16 |
| Abbvie Inc. | $584.87 | 19 |
What the 2025 payments were for
- Food and Beverage$6,186 · 216 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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