Dr Mark D Barsamian, DO - Medicare Ophthalmology in Hopedale, MA

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Dr Mark D Barsamian, DO is a medicare enrolled "Ophthalmology - Retina Specialist" physician in Hopedale, Massachusetts. He graduated from medical school in 2003 and has 23 years of diverse experience with area of expertise as Ophthalmology. He is a member of the group practice Koch Eye Associates Llp, Milford-franklin Eye Center, Llc and his current practice location is 54 Hopedale St Ste 1, Hopedale, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (774) 396-6905.

Dr Mark D Barsamian is licensed to practice in Massachusetts (license number 243559) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1821204207.

Contact Information

Dr Mark D Barsamian, DO
54 Hopedale St Ste 1,
Hopedale, MA 01747-1732
(774) 396-6905
(810) 202-7533

Map and Direction




Physician's Profile

Full NameDr Mark D Barsamian
GenderMale
SpecialityOphthalmology
Experience23 Years
Location54 Hopedale St Ste 1, Hopedale, Massachusetts
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Mark D Barsamian graduated from medical school in 2003
  NPI Data:
  • NPI Number: 1821204207
  • Provider Enumeration Date: 05/15/2007
  • Last Update Date: 01/29/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 3375638265
  • Enrollment ID: I20170310000448

Medical Identifiers

Medical identifiers for Dr Mark D Barsamian such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1821204207NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207WX0107XOphthalmology - Retina Specialist 243559 (Massachusetts)Primary
207WX0107XOphthalmology - Retina Specialist DO00851 (Rhode Island)Secondary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Mark D Barsamian allows following entities to bill medicare on his behalf.
Entity NameKoch Eye Associates LLP
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194881961
PECOS PAC ID: 1153213921
Enrollment ID: O20070416000584
Entity NameCandescent Eye Surgicenter LLC
Entity TypePart B Supplier - Ambulatory Surgical Center
Entity IdentifiersNPI Number: 1023399318
PECOS PAC ID: 2062687031
Enrollment ID: O20111202000753
Entity NameLifespan Physician Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407116643
PECOS PAC ID: 2567455082
Enrollment ID: O20121029000368
Entity NameEye Health Associates of Rhode Island Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124370176
PECOS PAC ID: 7618129263
Enrollment ID: O20121206000381
Entity NameRetina Physicians and Surgeons of New England, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1558987701
PECOS PAC ID: 7012382179
Enrollment ID: O20230404001129

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Mark D Barsamian is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Mark D Barsamian, DO
8 Nottingham Rd,
Westborough, MA 01581-2408

Ph: (248) 805-1013		Dr Mark D Barsamian, DO
54 Hopedale St Ste 1,
Hopedale, MA 01747-1732

Ph: (774) 396-6905

Reviews and Comments



Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.