Quick answers
- Does Mehdi Zargarian accept Medicare assignment?
- Yes. Medicare's clinician data says Mehdi Zargarian accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mehdi Zargarian see?
- In 2024, CMS data shows 475 Original Medicare patients and 2,699 services for Mehdi Zargarian. This counts Original Medicare only and measures volume, not quality.
- What is Mehdi Zargarian's NPI number?
- 1760429575. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mehdi Zargarian, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 475 |
|---|---|
| Services billed to Medicare | 2,699 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)951 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)644 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)305 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)205 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)107 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes63%
- Heart failure56%
- Chronic kidney disease47%
- Arthritis43%
Hospitals where Mehdi Zargarian works
Medicare's Facility Affiliation Data lists Mehdi Zargarian at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- PIH Health Downey HospitalDowney, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050393
Practice locations
Addresses where Mehdi Zargarian is enrolled with Medicare (CMS data updated October 2, 2026).
- 8423 Florence Ave, Suite CDowney, CA 90240 (562) 861‑6371
Specialties
Find other Cardiac Electrophysiology doctors in California →
Other cardiac electrophysiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Alabama College Of Medicine |
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1760429575 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians