Johan Hendrik Leonard Boneschansker, MD
NPI 1124474028ActiveIndividual· Internal Medicine, Gastroenterology· Worcester, MA
Internal Medicine, Gastroenterology (MD) with Umass Memorial Medical Group Inc, practicing in Worcester, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $757,782 for 436 claims, against $56,884 paid for services in 2024. Abbvie Inc. reported $83.60 in payments in 2025, mostly food and beverage. Lists Marlborough Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1124474028 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 10, 2016 |
| Last updated in NPPES | Dec 8, 2023 |
| Certified by provider | Jul 26, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 282680 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 315 |
|---|---|
| Services billed | 579 across 35 procedure codes |
| Paid by Medicare | $56,884 |
Part D prescriptions in 2024
| Prescriptions (claims) | 436 · 583 30-day fills |
|---|---|
| Patients | 268 |
| Total drug cost | $757,782 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Umass Memorial Medical Group IncWorcester, MA · 2,516 clinicians
Hospital affiliations
- Marlborough HospitalMarlborough, MA
- Umass Memorial Healthalliance HospitalsLeominster, MA
- Umass Memorial Medical Center/University CampusWorcester, MA
Industry payments (Open Payments)
- 2025$83.60 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $83.60 | 1 |
What the 2025 payments were for
- Food and Beverage$83.60 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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