Margarita Symonian Silver, M.D.
NPI 1528140696ActiveIndividual· Internal Medicine, Nephrology· Los Angeles, CA
Internal Medicine, Nephrology (M.D.) in Los Angeles, California, licensed in CA, with an NPI issued in October 2006. Their prescriptions cost Medicare Part D more than their services did: $219,715 for 1,757 claims, against $135,623 paid for services in 2024. Akebia Therapeutics Inc was the largest of 6 companies reporting payments in 2025, $306.94 in all, mostly food and beverage. Lists Glendale Adventist Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1528140696 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 19, 2006 |
| Last updated in NPPES | Jun 6, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A70249 | 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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 80 |
|---|---|
| Services billed | 719 across 19 procedure codes |
| Paid by Medicare | $135,623 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,757 · 2,430 30-day fills |
|---|---|
| Patients | 95 |
| Total drug cost | $219,715 |
| Generic share | 74% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Nephrology |
Hospital affiliations
- Glendale Adventist Medical CenterGlendale, CA
- Northridge Hospital Medical CenterNorthridge, CA
- Pih Health Good Samaritan HospitalLos Angeles, CA
Other facilities
- Usrc Downtown Los Angeles DialysisDialysis facility · Los Angeles, CA
- Professional Nursing IncHome health agency · Valley Village, CA
Industry payments (Open Payments)
- 2025$306.94 · 14 payments from 6 companies
- 2024$561.87 · 24 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Akebia Therapeutics Inc | $159.19 | 7 |
| Ardelyx, Inc. | $45.86 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $44.13 | 2 |
| Otsuka America Pharmaceutical, Inc. | $24.67 | 1 |
| Astrazeneca Pharmaceuticals LP | $19.41 | 1 |
What the 2025 payments were for
- Food and Beverage$306.94 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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