Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Ophthalmology

Mark D. Barsamian, DO

Sees patients in Warwick, RI · Hopedale, MA · Franklin, MA · Rhode Island, Massachusetts

Summary

Mark D. Barsamian, DO (Ophthalmology) is enrolled with Medicare at 5 practice locations in Warwick, RI, Hopedale, MA and Franklin, MA. NPI 1821204207. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Mark D. Barsamian, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

OphthalmologyPrimary specialty
YesAccepts Medicare assignment
23Years since medical school (graduated 2003)
MaleGender (as listed)
Koch Eye Associates LLPGroup practice (+1 more)

Quick answers

Where does Mark D. Barsamian see patients?
Medicare's clinician data lists 5 practice locations, including Warwick, RI, Hopedale, MA and Franklin, MA. Call before your visit to confirm the address.
What is Mark D. Barsamian's specialty?
Medicare lists Ophthalmology as the primary specialty.
Does Mark D. Barsamian accept Medicare assignment?
Yes. Medicare's clinician data says Mark D. Barsamian accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Mark D. Barsamian?
(401) 463-3500, as listed in official Medicare / NPI Registry data.
What is Mark D. Barsamian's NPI number?
1821204207. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Mark D. Barsamian is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Mark D. Barsamian as a member of these groups (CMS data updated 2026-10-02).

  • Koch Eye Associates LLP28 clinicians in the group
  • Milford-Franklin Eye Center, LLC9 clinicians in the group

Specialties

Find other Ophthalmology doctors in Rhode Island →

Other ophthalmologists in Warwick

Clinicians with the same Medicare primary specialty in Warwick, RI — not a recommendation.

All ophthalmologists in Warwick →

Clinician information

CredentialDO
Graduation year2003
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1821204207
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 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians