Anna Leszczynski
NPI 1942566732ActiveIndividual· Internal Medicine, Gastroenterology· Burlington, MA
Internal Medicine, Gastroenterology in Burlington, Massachusetts, trained at New York University School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $123,756 for 351 claims, against $40,424 paid for services in 2024. Boston Scientific Corporation reported $30.34 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1942566732 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 5, 2012 |
| Last updated in NPPES | Oct 2, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 274071 | 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 - Gastroenterology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 271 |
|---|---|
| Services billed | 400 across 32 procedure codes |
| Paid by Medicare | $40,424 |
Part D prescriptions in 2024
| Prescriptions (claims) | 351 · 657 30-day fills |
|---|---|
| Patients | 98 |
| Total drug cost | $123,756 |
| Generic share | 74% of claims |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Lahey Clinic IncBurlington, MA · 1,381 clinicians
Hospital affiliations
- Beth Israel Deaconess Medical CenterBoston, MA
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA
- Northeast Hospital CorporationBeverly, MA
- Winchester HospitalWinchester, MA
Industry payments (Open Payments)
- 2025$30.34 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $30.34 | 1 |
What the 2025 payments were for
- Food and Beverage$30.34 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 30 gastroenterologists in Burlington · All gastroenterologists in Massachusetts