James W. O'Brien, MD
NPI 1841275252ActiveIndividual· Internal Medicine, Gastroenterology· Manchester, CT
Internal Medicine, Gastroenterology (MD) in Manchester, Connecticut, trained at Duke University School of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $107,445 for 333 claims, against $43,167 paid for services in 2024. Boston Scientific Corporation reported $1,299 in payments in 2025, mostly travel and lodging.
Overview
| NPI | 1841275252 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 8, 2005 |
| Last updated in NPPES | May 1, 2025 |
| Certified by provider | May 1, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 035189 | CT |
| Internal Medicine, Gastroenterology | 207RG0100X | MD-19477 | HI |
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 (HI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 172 |
|---|---|
| Services billed | 405 across 48 procedure codes |
| Paid by Medicare | $43,167 |
Part D prescriptions in 2024
| Prescriptions (claims) | 333 · 578 30-day fills |
|---|---|
| Patients | 165 |
| Total drug cost | $107,445 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Duke University School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical groups
- Straub Clinic and HospitalHonolulu, HI · 419 clinicians
- Hilo Benioff Medical CenterHilo, HI · 129 clinicians
Hospital affiliations
- Adventist Health CastleKailua, HI
- Pali Momi Medical CenterAiea, HI
- Straub Clinic and HospitalHonolulu, HI
- Wilcox Memorial HospitalLihue, HI
Industry payments (Open Payments)
- 2025$1,299 · 5 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $1,299 | 5 |
What the 2025 payments were for
- Travel and Lodging$1,187 · 3 payments
- Food and Beverage$111.12 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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