Barrett L. Chapin, MD
NPI 1629009493ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Springfield, MA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Springfield, Massachusetts, licensed in MA and NH, with an NPI issued in July 2006. Part D covered 43 prescriptions written in 2024, 37% of them generic.
Overview
| NPI | 1629009493 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 6, 2006 |
| Last updated in NPPES | Dec 2, 2022 |
| Certified by provider | Dec 2, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 73474 | MA |
| Internal Medicine | 207R00000X | 10323 | NH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (NH) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 43 · 90 30-day fills |
|---|---|
| Patients | 27 |
| Total drug cost | $9,889 |
| Generic share | 37% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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