Eugenia Toneva-Merdjanova, PA-C
NPI 1578656997ActiveIndividual· Physician Assistant· Laguna Niguel, CA
Physician Assistant (PA-C) with Healthcare Partners Affiliates Medical Group, practicing in Laguna Niguel, California. Their prescriptions cost Medicare Part D more than their services did: $121,960 for 2,160 claims, against $12,742 paid for services in 2024. Exact Sciences Corporation reported $30.09 in payments in 2025, mostly food and beverage. Lists Providence Mission Hospital as a hospital affiliation.
Overview
| NPI | 1578656997 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Sep 30, 2006 |
| Last updated in NPPES | Feb 23, 2026 |
| Certified by provider | Feb 23, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA18193 | CA |
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 - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 84 |
|---|---|
| Services billed | 207 across 14 procedure codes |
| Paid by Medicare | $12,742 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,160 · 4,133 30-day fills |
|---|---|
| Patients | 330 |
| Total drug cost | $121,960 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Healthcare Partners Affiliates Medical GroupAnaheim, CA · 754 clinicians
Hospital affiliation
- Providence Mission HospitalMission Viejo, CA
Industry payments (Open Payments)
- 2025$30.09 · 1 payment from 1 company
- 2024$64.55 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $30.09 | 1 |
What the 2025 payments were for
- Food and Beverage$30.09 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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