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Dr. Benjamin C. Chaon, MD

Ophthalmology (Ophthalmology Physician)

  • Medicare participating

At a glance

Years since graduation
13
In the NPI registry since
2013
Medicare patients seen, 2024
273

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2013Medical school: University of Iowa, Rj & L Carver College of Medicine
  • 2013Registered with an NPI (national billing number; not a license date)

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Ophthalmology Physician primary
    MD license D0085758

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Ophthalmology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
273
Services billed
774
Patients’ average age
69
Most frequent Medicare services, 2023
ServiceTimesPatients
Imaging of retina354242
Established patient complete exam of visual system284250
Established patient office or other outpatient visit, 30-39 minutes137116
Injection of drug into eye12157
Injection, aflibercept, 1 mg8219
Compounded drug, not otherwise classified6228
New patient complete exam of visual system5555
Established patient problem focused exam of visual system3128
Imaging of optic nerve2929
Established patient office or other outpatient visit, 20-29 minutes2621

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 6 companies reported 15 payments worth $537 in total to this clinician.

By company
Mallinckrodt Hospital Products Inc.$212
Biotissue Holdings Inc.$122
Genentech USA, Inc.$107
Dompe US, Inc.$61.14
Amgen Inc.$18.83
Merz Pharmaceuticals, LLC$16.27
By type
Food and Beverage$537

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Maryland →

Other Ophthalmology clinicians in Baltimore

Sources

NPI registry (CMS NPPES, November 2026; record last updated October 15, 2018), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1902245830. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.