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Interventional Cardiology

Peyman Naji, MD

Works at hospitals in Lakewood, CA · Orange, CA · California

Summary

Dr. Peyman Naji, MD is an interventional cardiologist at 3650 E S St, Suite 310, Lakewood, CA 90712. Phone: (562) 531-1980. Accepts Medicare assignment. In 2024, Peyman Naji had 348 Original Medicare patients and 1,488 services. NPI 1720215429. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Interventional cardiologist (Medicare lists Interventional Cardiology)
  • Address: 3650 E S St, Suite 310, Lakewood, CA 90712 · Directions
  • Phone: (562) 531‑1980
  • Medicare: Accepts Medicare assignment
  • Hospitals: UCI Health-Lakewood, UCI Health-Orange
  • Group practice: Prohealth Partners, a Medical Group
  • Medical school: graduated 2006 (20 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Peyman Naji, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Peyman Naji accept Medicare assignment?
Yes. Medicare's clinician data says Peyman Naji 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 Peyman Naji see?
In 2024, CMS data shows 348 Original Medicare patients and 1,488 services for Peyman Naji. This counts Original Medicare only and measures volume, not quality.
What is Peyman Naji's NPI number?
1720215429. 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 Peyman Naji, 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 patients348
Services billed to Medicare1,488
Different services or procedures61
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)202 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)179 services
  3. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)142 services
  4. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)130 services
  5. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)124 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%
  • Diabetes71%
  • Chronic kidney disease54%
  • Heart failure51%
  • Arthritis50%

Hospitals where Peyman Naji works

Medicare's Facility Affiliation Data lists Peyman Naji 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.

  • UCI Health-LakewoodLakewood, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050581
  • UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

Addresses where Peyman Naji is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Peyman Naji as a member of this group (CMS data updated October 2, 2026).

  • Prohealth Partners, a Medical Group239 clinicians in the group

Specialties

Find other Interventional Cardiology doctors in California →

Other interventional cardiologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All interventional cardiologists in California →

Other clinicians in Prohealth Partners, a Medical Group

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2006 (20 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1720215429
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians