Natalie V. Vilissova, MD
NPI 1831133289ActiveIndividual· Internal Medicine· Concord, MA
Internal Medicine (MD) with Lawrence General Hospital, practicing in Concord, Massachusetts. In 2024 Medicare paid $34,751 for 168 patients, and Part D covered 81 of their prescriptions, 85% of them generic. E.R. Squibb & Sons, L.L.C. was the largest of 5 companies reporting payments in 2025, $125.23 in all, mostly food and beverage. Lists Merrimack Health Lawrence Hospital as a hospital affiliation.
Overview
| NPI | 1831133289 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 16, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 213773 | 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 - Family Practice (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 168 |
|---|---|
| Services billed | 494 across 7 procedure codes |
| Paid by Medicare | $34,751 |
Part D prescriptions in 2024
| Prescriptions (claims) | 81 · 85 30-day fills |
|---|---|
| Patients | 57 |
| Total drug cost | $5,637 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Family Practice |
| Secondary specialties | Internal Medicine |
Medical group
- Lawrence General HospitalLawrence, MA · 123 clinicians
Hospital affiliation
- Merrimack Health Lawrence HospitalLawrence, MA
Industry payments (Open Payments)
- 2025$125.23 · 5 payments from 5 companies
- 2024$126.08 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $31.29 | 1 |
| Vertex Pharmaceuticals Incorporated | $26.00 | 1 |
| Abbvie Inc. | $24.15 | 1 |
| Pfizer Inc. | $21.95 | 1 |
| Novartis Pharmaceuticals Corporation | $21.84 | 1 |
What the 2025 payments were for
- Food and Beverage$125.23 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 52 internal medicine physicians in Concord · All internal medicine physicians in Massachusetts