Nealanjon P. Das, DO
NPI 1528163649ActiveIndividual· Internal Medicine, Nephrology· Newark, DE
Internal Medicine, Nephrology (DO) in Newark, Delaware, trained at At Still University of Health Sciences, College of Osteo Med, Kirksville (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $439,876 for 1,843 claims, against $265,990 paid for services in 2024. Amgen Inc. was the largest of 19 companies reporting payments in 2025, $1,174 in all, mostly food and beverage.
Overview
| NPI | 1528163649 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Sep 13, 2006 |
| Last updated in NPPES | Jun 24, 2021 |
| Certified by provider | Jun 24, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | C2-0011770 | DE |
| Internal Medicine | 207R00000X | C2-0011770 | DE |
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 - Nephrology (DE); Practitioner - Nephrology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 774 |
|---|---|
| Services billed | 4,022 across 27 procedure codes |
| Paid by Medicare | $265,990 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,843 · 4,813 30-day fills |
|---|---|
| Patients | 316 |
| Total drug cost | $439,876 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | At Still University of Health Sciences, College of Osteo Med, Kirksville |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Nephrology Associates PAWilmington, DE · 54 clinicians
Hospital affiliations
- Christiana HospitalNewark, DE
- Union Hospital of Cecil CountyElkton, MD
Other facilities
- Fkc Brandywine Home TherapiesDialysis facility · Newark, DE
- Fkc Main StreetDialysis facility · Newark, DE
- Fmc - ElktonDialysis facility · Elkton, MD
- Encompass Health Rehab Hospital of MiddletownInpatient rehabilitation facility · Middletown, DE
Industry payments (Open Payments)
- 2025$1,174 · 54 payments from 19 companies
- 2024$1,217 · 54 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $172.56 | 9 |
| Otsuka America Pharmaceutical, Inc. | $112.51 | 5 |
| Fresenius USA Marketing, Inc. | $107.09 | 4 |
| Ardelyx, Inc. | $89.97 | 5 |
| Novo Nordisk Inc | $83.45 | 5 |
What the 2025 payments were for
- Food and Beverage$1,174 · 54 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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