Alfred W. Heinser, MD
NPI 1871570218ActiveIndividual· Internal Medicine· Groton, MA
Internal Medicine (MD) in Groton, Massachusetts, licensed in MA, with an NPI issued in December 2005. 362 Medicare patients in 2024, $72,635 paid; nearly all of their 1,387 Part D prescriptions were generic (92%). Janssen Biotech, Inc. was the largest of 13 companies reporting payments in 2025, $779.00 in all, mostly food and beverage.
Overview
| NPI | 1871570218 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 28, 2005 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 208727 | MA |
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 (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 362 |
|---|---|
| Services billed | 812 across 20 procedure codes |
| Paid by Medicare | $72,635 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,387 · 3,651 30-day fills |
|---|---|
| Patients | 288 |
| Total drug cost | $72,667 |
| Generic share | 92% of claims |
Industry payments (Open Payments)
- 2025$779.00 · 29 payments from 13 companies
- 2024$2,879 · 123 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $173.11 | 4 |
| Ucb, Inc. | $150.14 | 5 |
| Astrazeneca Pharmaceuticals LP | $98.83 | 4 |
| Glaxosmithkline, LLC. | $90.44 | 4 |
| Amgen Inc. | $73.62 | 4 |
What the 2025 payments were for
- Food and Beverage$710.01 · 28 payments
- Education$68.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Groton
- 1144362740
- 1689716813
- 1285682450
- 1881683068
- 1326037508
- 1235368242