Siamak Rassadi, M.D.
NPI 1457500613ActiveIndividual· Internal Medicine, Clinical Cardiac Electrophysiology· Phoenix, AZ
Internal Medicine, Clinical Cardiac Electrophysiology (M.D.) with Unomed LLC and 1 other group, practicing in Phoenix, Arizona. In 2024 Medicare paid $343,761 for 457 patients, and Part D covered 2,061 of their prescriptions, 87% of them generic. Abbott Laboratories was the largest of 9 companies reporting payments in 2025, $1,096 in all, mostly food and beverage. Lists Cobre Valley Regional Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1457500613 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 12, 2008 |
| Last updated in NPPES | Oct 16, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Clinical Cardiac Electrophysiology Primary | 207RC0001X | 46507 | AZ |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 46507 | AZ |
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 - Cardiovascular Disease (Cardiology) (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 457 |
|---|---|
| Services billed | 4,400 across 66 procedure codes |
| Paid by Medicare | $343,761 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,061 · 4,942 30-day fills |
|---|---|
| Patients | 360 |
| Total drug cost | $260,744 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical groups
- Unomed LLCPhoenix, AZ · 12 clinicians
- American Family Medicine LLCTolleson, AZ · 9 clinicians
Hospital affiliations
- Cobre Valley Regional Medical CenterGlobe, AZ
- Honor Health John C. Lincoln Medical CenterPhoenix, AZ
- St Josephs Hospital and Medical CenterPhoenix, AZ
Industry payments (Open Payments)
- 2025$1,096 · 41 payments from 9 companies
- 2024$2,557 · 43 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $685.38 | 11 |
| Boston Scientific Corporation | $212.70 | 22 |
| Becton, Dickinson and Company | $46.15 | 1 |
| Actelion Pharmaceuticals US, Inc. | $34.86 | 2 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $34.17 | 1 |
What the 2025 payments were for
- Food and Beverage$1,096 · 41 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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