William Anthony Charini, M.D.
NPI 1265505499ActiveIndividual· Internal Medicine, Infectious Disease· Lawrence, MA
Internal Medicine, Infectious Disease (M.D.) in Lawrence, Massachusetts, trained at University of California, Irvine, California College of Medicine (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $339,450 for 252 claims, against $70,242 paid for services in 2024.
Overview
| NPI | 1265505499 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 16, 2006 |
| Last updated in NPPES | Dec 14, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 150270 | 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 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 - Infectious Disease (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 280 |
|---|---|
| Services billed | 760 across 11 procedure codes |
| Paid by Medicare | $70,242 |
Part D prescriptions in 2024
| Prescriptions (claims) | 252 · 304 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $339,450 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Mass General Brigham Medical Group Northern Massachusetts IncDanvers, MA · 827 clinicians
Hospital affiliations
- Massachusetts General HospitalBoston, MA
- North Shore Medical Center -Salem, 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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