Yunseok Namn, M.D
NPI 1881005395ActiveIndividual· Internal Medicine, Gastroenterology· West Orange, NJ
Internal Medicine, Gastroenterology (M.D) in West Orange, New Jersey, trained at Rutgers New Jersey Medical School (class of 2014). Mostly services rather than prescriptions: Medicare paid $135,913 for 443 patients in 2024, with only 16 Part D claims. Olympus Corporation of the Americas was the largest of 10 companies reporting payments in 2025, $1,044 in all, mostly travel and lodging.
Overview
| NPI | 1881005395 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | Yes |
| NPI issued | May 19, 2014 |
| Last updated in NPPES | Jun 27, 2023 |
| Certified by provider | Jun 27, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 25MA11585200 | NJ |
| Internal Medicine, Gastroenterology | 207RG0100X | 290592 | 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 - Gastroenterology (NJ); Practitioner - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 443 |
|---|---|
| Services billed | 1,214 across 60 procedure codes |
| Paid by Medicare | $135,913 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16 · 19 30-day fills |
|---|---|
| Total drug cost | $707.66 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Rutgers New Jersey Medical School |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Gastroenterology |
Medical group
- Barnabas Health MultispecialtyMorristown, NJ · 23 clinicians
Hospital affiliations
- Cooperman Barnabas Medical CenterLivingston, NJ
- Morristown Medical CenterMorristown, NJ
Industry payments (Open Payments)
- 2025$1,044 · 18 payments from 10 companies
- 2024$922.76 · 27 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Olympus Corporation of the Americas | $749.60 | 3 |
| Abbvie Inc. | $74.14 | 4 |
| Evoke Pharma, Inc. | $49.84 | 3 |
| Boston Scientific Corporation | $44.17 | 1 |
| Novo Nordisk Inc | $36.70 | 2 |
What the 2025 payments were for
- Travel and Lodging$749.60 · 3 payments
- Food and Beverage$294.42 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in West Orange
- 1245283563
- 1306107792
- 1407920408
- 1447571096
- 1689774713
- 1710399985
- 1811061807
- 1871023192
- 1871780528
- 1912430653
- 1922012335
- 1942359021
All 25 gastroenterologists in West Orange · All gastroenterologists in New Jersey