Charles P. Chalko, D.O.
NPI 1548218126ActiveIndividual· Internal Medicine· South Weymouth, MA
Internal Medicine (D.O.) with Coastal Medical Associates, practicing in South Weymouth, Massachusetts. 479 Medicare patients in 2024, $88,293 paid; nearly all of their 298 Part D prescriptions were generic (90%). Lists South Shore Hospital as a hospital affiliation.
Overview
| NPI | 1548218126 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | May 5, 2006 |
| Last updated in NPPES | Mar 13, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 76091 | 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 | 479 |
|---|---|
| Services billed | 1,123 across 12 procedure codes |
| Paid by Medicare | $88,293 |
Part D prescriptions in 2024
| Prescriptions (claims) | 298 · 305 30-day fills |
|---|---|
| Patients | 152 |
| Total drug cost | $24,190 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Nephrology |
Medical group
- Coastal Medical AssociatesWeymouth, MA · 443 clinicians
Hospital affiliation
- South Shore HospitalSouth Weymouth, MA
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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