Delia Mihaela Stefan, MD
NPI 1003019613ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Fishkill, NY
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with North Shore-Lij Medical PC, practicing in Fishkill, New York. Their prescriptions cost Medicare Part D more than their services did: $2,279,249 for 3,658 claims, against $124,915 paid for services in 2024. Lists Northern Westchester Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1003019613 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 10, 2007 |
| Last updated in NPPES | Jan 16, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 257202 | 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 - Endocrinology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 302 |
|---|---|
| Services billed | 1,573 across 28 procedure codes |
| Paid by Medicare | $124,915 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,658 · 8,740 30-day fills |
|---|---|
| Patients | 414 |
| Total drug cost | $2,279,249 |
| Generic share | 42% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- North Shore-Lij Medical PCStaten Island, NY · 6,440 clinicians
Hospital affiliations
- Northern Westchester HospitalMount Kisco, NY
- Phelps HospitalSleepy Hollow, NY
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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