Charlotte Louise Barker, DO
NPI 1689202988ActiveIndividual· Internal Medicine· Worcester, MA
Internal Medicine (DO) in Worcester, Massachusetts, licensed in MA, with an NPI issued in March 2020. Mostly services rather than prescriptions: Medicare paid $15,834 for 130 patients in 2024, with only 13 Part D claims.
Overview
| NPI | 1689202988 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 31, 2020 |
| Last updated in NPPES | Jun 28, 2023 |
| Certified by provider | Jun 28, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 295462 | 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 Order and Referring Only - Internal Medicine (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 130 |
|---|---|
| Services billed | 138 across 6 procedure codes |
| Paid by Medicare | $15,834 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13 · 25 30-day fills |
|---|---|
| Total drug cost | $1,110 |
| Generic share | 85% 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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All 471 internal medicine physicians in Worcester · All internal medicine physicians in Massachusetts