Ivanka A. Vassileva, MD
NPI 1295729929ActiveIndividual· Family Medicine· Lawton, OK
Family Medicine (MD) in Lawton, Oklahoma, licensed in OK, with an NPI issued in September 2005. Their prescriptions cost Medicare Part D more than their services did: $378,845 for 4,047 claims, against $168,138 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 7 companies reporting payments in 2025, $194.78 in all, mostly food and beverage. Lists Memorial Health and 1 other hospital as hospital affiliations.
Overview
| NPI | 1295729929 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Sep 8, 2005 |
| Last updated in NPPES | Feb 9, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 22970 | OK |
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 (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 282 |
|---|---|
| Services billed | 3,592 across 36 procedure codes |
| Paid by Medicare | $168,138 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,047 · 10,137 30-day fills |
|---|---|
| Patients | 292 |
| Total drug cost | $378,845 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Family Practice |
Hospital affiliations
- Memorial HealthLawton, OK
- Southwestern Medical CenterLawton, OK
Other facilities
- Carter Healthcare of Southwest Oklahoma, LLCHome health agency · Lawton, OK
- Elara Caring XxivHome health agency · Lawton, OK
- Enhabit Home Health of Western OklahomaHome health agency · Lawton, OK
- Memorial Home HealthHome health agency · Lawton, OK
Industry payments (Open Payments)
- 2025$194.78 · 10 payments from 7 companies
- 2024$205.00 · 9 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $45.36 | 2 |
| Lilly USA, LLC | $40.68 | 2 |
| Glaxosmithkline, LLC. | $32.30 | 2 |
| Ars Pharmaceuticals Operations, Inc. | $21.43 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $20.02 | 1 |
What the 2025 payments were for
- Food and Beverage$194.78 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 110 family medicine physicians in Lawton · All family medicine physicians in Oklahoma