Sebastian G. Sepulveda, MD
NPI 1558343129ActiveIndividual· Internal Medicine, Nephrology· Chelmsford, MA
Internal Medicine, Nephrology (MD) with Lowell General Inpatient Specialists PLLC and 1 other group, practicing in Chelmsford, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $596,278 for 5,543 claims, against $361,144 paid for services in 2024. Lists Emerson Hospital - and 1 other hospital as hospital affiliations.
Overview
| NPI | 1558343129 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Nov 18, 2005 |
| Last updated in NPPES | Feb 9, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 204365 | MA |
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 (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 534 |
|---|---|
| Services billed | 3,451 across 22 procedure codes |
| Paid by Medicare | $361,144 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,543 · 11,509 30-day fills |
|---|---|
| Patients | 615 |
| Total drug cost | $596,278 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1988 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Nephrology |
Medical groups
- Lowell General Inpatient Specialists PLLCLowell, MA · 67 clinicians
- Commonwealth Medical Practice LLCDracut, MA · 2 clinicians
Hospital affiliations
- Emerson Hospital -W Concord, MA
- Lowell General HospitalLowell, MA
Other facilities
- Fresenius Medical Care ChelmsfordDialysis facility · Chelmsford, MA
- Fresenius Medical Care of LowellDialysis facility · Lowell, MA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other nephrologists in Chelmsford
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