Gin Den William Chang, DO
NPI 1689179582ActiveIndividual· Internal Medicine· Roslyn, NY
Internal Medicine (DO) in Roslyn, New York, licensed in NY, with an NPI issued in March 2018. Part D covered 211 prescriptions written in 2024, 85% of them generic. Abbott Laboratories was the largest of 11 companies reporting payments in 2025, $10,775 in all, mostly food and beverage.
Overview
| NPI | 1689179582 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 24, 2018 |
| Last updated in NPPES | Jul 7, 2021 |
| Certified by provider | Jul 7, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 310324 | NY |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 (NY) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 211 · 498 30-day fills |
|---|---|
| Patients | 58 |
| Total drug cost | $29,806 |
| Generic share | 85% of claims |
Industry payments (Open Payments)
- 2025$10,775 · 49 payments from 11 companies
- 2024$1,075 · 11 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $5,480 | 20 |
| Boston Scientific Corporation | $4,090 | 12 |
| Shockwave Medical, Inc | $325.97 | 2 |
| Biotronik Inc. | $149.24 | 2 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $131.64 | 3 |
What the 2025 payments were for
- Food and Beverage$3,873 · 34 payments
- Travel and Lodging$3,550 · 12 payments
- Grant$3,000 · 1 payment
- Education$351.82 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Roslyn
- 1124287958
- 1215013990
- 1265599773
- 1669911301
- 1730686296
- 1831458108
- 1922087188
- 1225759863
- 1043599947
- 1184200289
- 1356564348
- 1861661043
All 27 internal medicine physicians in Roslyn · All internal medicine physicians in New York