Margarita Symonian Silver, M.D.
NPI 1528140696 · Nephrology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margarita Symonian Silver, M.D. is a Nephrology Physician provider in Los Angeles, CA (NPI 1528140696).
Provider details
- NPI number
- 1528140696
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A70249 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
585 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 328 | $369 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 126 | $123 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 75 | $138 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 38 | $179 |
| Hemodialysis Procedure Requiring Repeated Evaluation90937 | 18 | $105 |
Typical Medicare-allowed amounts for these services range $105–$369 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 66 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 79 | 19 |
| Amlodipine Besylate | 66 | 17 |
| Atorvastatin Calcium | 45 | — |
| Levothyroxine Sodium | 44 | — |
| Azithromycin | 43 | 24 |
| Carvedilol | 42 | — |
| Febuxostat | 41 | — |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$562 across 24 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-19
- Last updated
- 2014-06-06
Frequently asked questions
- What is Margarita Symonian Silver's NPI number?
- Margarita Symonian Silver's National Provider Identifier (NPI) is 1528140696, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margarita Symonian Silver's specialty?
- Margarita Symonian Silver is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Margarita Symonian Silver located?
- Margarita Symonian Silver's practice location on file with NPPES is 201 S Alvarado St, Los Angeles, CA 90057-2320.
- What is Margarita Symonian Silver's phone number?
- The practice phone number listed in the NPPES registry for Margarita Symonian Silver is (213) 413-2929.
- Does Margarita Symonian Silver accept Medicare?
- Margarita Symonian Silver is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margarita Symonian Silver's NPI active?
- Yes — Margarita Symonian Silver's NPI (1528140696) is active in the NPPES registry as of the last update on 2014-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.