Siamak Rassadi, M.D.
NPI 1457500613 · Clinical Cardiac Electrophysiology Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siamak Rassadi, M.D. is a Clinical Cardiac Electrophysiology Physician provider in Phoenix, AZ (NPI 1457500613).
Provider details
- NPI number
- 1457500613
- Entity type
- Individual
- Primary specialty
- Clinical Cardiac Electrophysiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 46507 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,956 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,092 | $103 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 700 | $124 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 274 | $113 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System, Remote Up to 90 Days93294 | 266 | $28 |
| Evaluation of Implantable Heart and Blood Vessel Monitoring System, Remote Up to 30 Days93297 | 264 | $25 |
| Evaluation of Cardiac Rhythm Monitor System, Remote Up to 30 Days93298 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 181 | 73 |
| Atorvastatin Calcium | 154 | 60 |
| Losartan Potassium | 122 | 47 |
| Furosemide | 121 | 49 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 102 | 33 |
| Metoprolol Succinate | 98 | 40 |
| Amiodarone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,557 across 43 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
Additional practice locations (1)
- 1331 N 7th StSuite 400Phoenix, AZ 85006-2754Phone: (602) 277-6181Fax: (602) 277-5354
Registry dates
- Enumerated
- 2008-09-12
- Last updated
- 2019-10-16
Frequently asked questions
- What is Siamak Rassadi's NPI number?
- Siamak Rassadi's National Provider Identifier (NPI) is 1457500613, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siamak Rassadi's specialty?
- Siamak Rassadi is listed in the NPPES registry with a primary specialty of Clinical Cardiac Electrophysiology Physician (Allopathic & Osteopathic Physicians).
- Where is Siamak Rassadi located?
- Siamak Rassadi's practice location on file with NPPES is 5251 W Campbell Ave Ste 105, Phoenix, AZ 85031-1718.
- What is Siamak Rassadi's phone number?
- The practice phone number listed in the NPPES registry for Siamak Rassadi is (623) 547-5235.
- Does Siamak Rassadi accept Medicare?
- Siamak Rassadi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siamak Rassadi's NPI active?
- Yes — Siamak Rassadi's NPI (1457500613) is active in the NPPES registry as of the last update on 2019-10-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.