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Dr. Marcus T. Altman

Retina Specialist (Retina Specialist (Ophthalmology) Physician)

  • Medicare participating

At a glance

Years since graduation
8
In the NPI registry since
2018
Medicare patients seen, 2024
130

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

  • 2018Medical school: Yale University School of Medicine
  • 2018Registered 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

  • Retina Specialist (Ophthalmology) Physician primary
    OR license MD225318
  • Ophthalmology Physician
    OR license MD225318 · UT license 12733169-1205

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

Map: Retina Specialist 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
130
Services billed
232
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Imaging of retina5952
Injection of drug into eye4744
Established patient office or other outpatient visit, 30-39 minutes2016
Removal of eye fluid (vitreous) between lens and retina1212

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, 1 companies reported 1 payments worth $19.27 in total to this clinician.

By company
Genentech USA, Inc.$19.27
By type
Food and Beverage$19.27

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 Oregon →

Other Retina Specialist clinicians in Portland

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 7, 2025), 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 1699265744. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.