Larry K. Siu, MD
NPI 1972765675ActiveIndividual· Internal Medicine, Gastroenterology· West Orange, NJ
Internal Medicine, Gastroenterology (MD) with Barnabas Health Multispecialty, practicing in West Orange, New Jersey. Their prescriptions cost Medicare Part D more than their services did: $1,749,866 for 1,212 claims, against $217,911 paid for services in 2024. Abbvie Inc. was the largest of 23 companies reporting payments in 2025, $2,390 in all, mostly food and beverage. Lists Ahs Hospital Corp and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1972765675 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 25, 2008 |
| Last updated in NPPES | Oct 12, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 25MA09639900 | NJ |
| Internal Medicine | 207R00000X | LP01440 | RI |
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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 925 |
|---|---|
| Services billed | 1,974 across 67 procedure codes |
| Paid by Medicare | $217,911 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,212 · 2,068 30-day fills |
|---|---|
| Patients | 368 |
| Total drug cost | $1,749,866 |
| Generic share | 59% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Barnabas Health MultispecialtyMorristown, NJ · 23 clinicians
Hospital affiliations
- Ahs Hospital CorpHackettstown, NJ
- Cooperman Barnabas Medical CenterLivingston, NJ
- Morristown Medical CenterMorristown, NJ
- Newton Medical CenterNewton, NJ
- Overlook Medical CenterSummit, NJ
Industry payments (Open Payments)
- 2025$2,390 · 131 payments from 23 companies
- 2024$1,814 · 116 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $530.05 | 32 |
| Pfizer Inc. | $315.45 | 19 |
| Takeda Pharmaceuticals U.S.A., Inc. | $179.01 | 9 |
| Intercept Pharmaceuticals, Inc. | $164.01 | 8 |
| Janssen Biotech, Inc. | $160.88 | 10 |
What the 2025 payments were for
- Food and Beverage$2,390 · 131 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 25 gastroenterologists in West Orange · All gastroenterologists in New Jersey