Flavia Esteve Kostov, M.D.
NPI 1174545107ActiveIndividual· Internal Medicine, Hematology & Oncology· Newport News, VA
Internal Medicine, Hematology & Oncology (M.D.) with Peninsula Cancer Institute, LLC, practicing in Newport News, Virginia. Their prescriptions cost Medicare Part D more than their services did: $5,038,004 for 3,013 claims, against $82,636 paid for services in 2024. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $308.45 in all, mostly food and beverage. Lists Riverside Doctors' Hospital of Williamsburg and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1174545107 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 25, 2006 |
| Last updated in NPPES | Jan 20, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 0101251176 | VA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 392 |
|---|---|
| Services billed | 1,439 across 35 procedure codes |
| Paid by Medicare | $82,636 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,013 · 4,634 30-day fills |
|---|---|
| Patients | 336 |
| Total drug cost | $5,038,004 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Hematology/Oncology |
Medical group
- Peninsula Cancer Institute, LLCWilliamsburg, VA · 31 clinicians
Hospital affiliations
- Riverside Doctors' Hospital of WilliamsburgWilliamsburg, VA
- Riverside Regional Medical CenterNewport News, VA
- Riverside Walter Reed HospitalGloucester, VA
- Sentara Careplex HospitalHampton, VA
Other facilities
- Riverside Home HealthHome health agency · Gloucester, VA
Industry payments (Open Payments)
- 2025$308.45 · 13 payments from 10 companies
- 2024$88.35 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $54.46 | 2 |
| Janssen Biotech, Inc. | $52.87 | 2 |
| Array Biopharma Inc | $42.19 | 2 |
| Ipsen Biopharmaceuticals, Inc | $26.70 | 1 |
| Daiichi Sankyo Inc. | $24.50 | 1 |
What the 2025 payments were for
- Food and Beverage$308.45 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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