Namyi Yu, M.D.
NPI 1831117399ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Syosset, NY
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Syosset, New York, trained at State University of Ny Upstate Medical University (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $1,626,135 for 3,194 claims, against $212,053 paid for services in 2024. Lilly USA, LLC was the largest of 12 companies reporting payments in 2025, $643.31 in all, mostly food and beverage.
Overview
| NPI | 1831117399 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 17, 2006 |
| Last updated in NPPES | Jan 31, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 222570-1 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 405 |
|---|---|
| Services billed | 2,158 across 15 procedure codes |
| Paid by Medicare | $212,053 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,194 · 8,097 30-day fills |
|---|---|
| Patients | 361 |
| Total drug cost | $1,626,135 |
| Generic share | 54% of claims |
Education and affiliations
| Medical school | State University of Ny Upstate Medical University |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Industry payments (Open Payments)
- 2025$643.31 · 22 payments from 12 companies
- 2024$106.36 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $178.62 | 4 |
| Mannkind Corporation | $105.86 | 3 |
| Beta Bionics, Inc. | $85.51 | 1 |
| Amgen Inc. | $62.88 | 3 |
| Novo Nordisk Inc | $49.63 | 3 |
What the 2025 payments were for
- Food and Beverage$558.31 · 20 payments
- Education$85.00 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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