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Ophthalmology

Farnaz Memarzadeh, MD

Sees patients in Ontario, CA · Fontana, CA · California

Summary

Dr. Farnaz Memarzadeh, MD is an ophthalmologist at 2295 S Vineyard Ave, Ontario, CA 91761. Phone: (909) 724-5000. Accepts Medicare assignment. In 2024, Farnaz Memarzadeh had 23 Original Medicare patients and 31 services. NPI 1093934200. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Ophthalmologist (Medicare lists Ophthalmology)
  • Address: 2295 S Vineyard Ave, Ontario, CA 91761 · Directions (1 more location)
  • Phone: (909) 724‑5000
  • Medicare: Accepts Medicare assignment
  • Group practice: Southern California Permanente Medical Group
  • Medical school: University Of Pittsburgh School Of Medicine · graduated 2001 (25 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Farnaz Memarzadeh, 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 Farnaz Memarzadeh accept Medicare assignment?
Yes. Medicare's clinician data says Farnaz Memarzadeh 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 Farnaz Memarzadeh see?
In 2024, CMS data shows 23 Original Medicare patients and 31 services for Farnaz Memarzadeh. This counts Original Medicare only and measures volume, not quality.
What is Farnaz Memarzadeh's NPI number?
1093934200. 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 Farnaz Memarzadeh, 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 patients23
Services billed to Medicare31
Different services or procedures6
Participating Medicare providerYes
Average age of these patients66

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)16 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).

  • Diabetes65%
  • High blood pressure52%

Practice locations

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

Group practices

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

  • Southern California Permanente Medical Group11,293 clinicians in the group

Specialties

Find other Ophthalmology doctors in California →

Other ophthalmologists in Ontario

Clinicians with the same Medicare primary specialty in Ontario, CA — not a recommendation.

All ophthalmologists in Ontario →

Other clinicians in Southern California Permanente Medical Group

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

Clinician information

CredentialMD
Medical schoolUniversity Of Pittsburgh School Of Medicine
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1093934200
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians