Earl Frederick Nielsen, MD
NPI 1770550030ActiveIndividual· Internal Medicine, Nephrology· Morristown, NJ
Internal Medicine, Nephrology (MD) in Morristown, New Jersey, trained at University of Vermont College of Medicine (class of 1966). Their prescriptions cost Medicare Part D more than their services did: $289,633 for 1,792 claims, against $34,606 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 11 companies reporting payments in 2025, $389.40 in all, mostly food and beverage.
Overview
| NPI | 1770550030 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 7, 2006 |
| Last updated in NPPES | Sep 27, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | MA026976 | NJ |
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 - Internal Medicine (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 154 |
|---|---|
| Services billed | 393 across 26 procedure codes |
| Paid by Medicare | $34,606 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,792 · 4,145 30-day fills |
|---|---|
| Patients | 182 |
| Total drug cost | $289,633 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Vermont College of Medicine |
|---|---|
| Graduation year | 1966 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Nephrology |
Medical group
- Practice Associates Medical GroupSummit, NJ · 1,408 clinicians
Hospital affiliation
- Morristown Medical CenterMorristown, NJ
Other facilities
- Fmc Dialysis Associates North JerseyDialysis facility · Parsippany, NJ
- Fmc East MorrisDialysis facility · Morristown, NJ
- Atlantic Visiting NurseHome health agency · Morristown, NJ
Industry payments (Open Payments)
- 2025$389.40 · 16 payments from 11 companies
- 2024$877.38 · 39 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $126.63 | 1 |
| Otsuka America Pharmaceutical, Inc. | $49.48 | 3 |
| Abbott Laboratories | $35.66 | 2 |
| Lilly USA, LLC | $31.80 | 2 |
| Astrazeneca Pharmaceuticals LP | $30.30 | 2 |
What the 2025 payments were for
- Food and Beverage$389.40 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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