SIAMAK DARDASHTI (MD) – Diagnostic Radiology Physician, NPI 1013942713
Diagnostic Radiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,800 DIAGNOSTIC RADIOLOGY in CA
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Provider Addresses for SIAMAK DARDASHTI (MD)
1516, Cotner Avenue, West Los Angeles, Sawtelle, Los Angeles, Los Angeles County, California, 90025, United States
LOS ANGELES, CA 900253303
Phone: (310) 445-2951
Fax: (310) 479-1459
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2021-08-22
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20031107000564 | I | Diagnostic Radiology | CA | TBD |
| I20210822000014 | I | Diagnostic Radiology | AZ | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| A9575 | Injection, gadoterate meglumine, 0.1 ml | 8,200 | 50 | $0 |
| 73721 | Mri scan of leg joint without contrast | 652 | 434 | $0 |
| 73221 | Mri scan of arm joint without contrast | 465 | 325 | $0 |
| 72148 | Mri scan of lower spinal canal without contrast | 276 | 200 | $0 |
| 73718 | Mri scan of leg without contrast | 153 | 104 | $0 |
Insurance plans in this area (ZIP 90025)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | NH | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology | CO | |
| Diagnostic Radiology | PR | |
| - | CA | |
| Diagnostic Radiology | AZ | |
| Diagnostic Radiology | AZ | |
| Diagnostic Radiology | WI | |
| Diagnostic Radiology | NV | |
| Diagnostic Radiology | AZ |
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