Mark D. Barsamian, DO
Retina Specialist (Ophthalmology) Physician · Hopedale, MA
Mark D. Barsamian, DO is a retina specialist (ophthalmology) physician with a practice address in Hopedale, Massachusetts, and NPI 1821204207, issued on May 15, 2007. Check the license (Massachusetts 243559, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark D. Barsamian
- Credential
- DO
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License numbers
- 243559 MA
DO00851 RI
Self-reported in NPPES; status is on the state search - Practice location
- 54 Hopedale St Ste 1, Hopedale, MA 01747
- Phone
- (774) 396-6905
- Enumerated
- May 15, 2007
- Record last updated
- Jan 29, 2026
- Fax
- (810) 202-7533
- Medicare enrollment
- Enrolled (PECOS I20170310000448); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 32 in Massachusetts → Look up another NPI →
Verify Mark D. Barsamian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 243559Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
34 Medicare Part D claims for 11 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $180.97
5 payments; by number, the most common kind was food and beverage; the largest payer was Biogen, Inc. The 1,253 providers of this specialty with any payment received $7,667.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Koch Eye Associates LLPWarwick, RI
- Milford-Franklin Eye Center, LLCFranklin, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark D. Barsamian among 32 retina specialist (ophthalmology) physician records in Massachusetts
Mark D. Barsamian, DO is one of 32 retina specialist (ophthalmology) physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 28% of them.
- NPI issued2007 · 28% of these records are older, 66% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2003 · median 2004 among the 22 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 retina specialist (ophthalmology) physician record lists a practice address in Hopedale
They are 1 of the 51 NPPES records with a practice address in Hopedale, and 32 retina specialist (ophthalmology) physician records in Massachusetts.
All 32 in Massachusetts → Every provider in Hopedale → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Brad Baker, MDWorcester, MA 016051508853821
- Melvyn Defrin, MDWorcester, MA 016051679539217
- Bryan Hong, M.D.Worcester, MA 016051306166756
- Frank McCabe, M.D.Worcester, MA 016051003870973
- Shahrokh Khani, MD PHDBeverly, MA 019151710953690
- Fina Barouch, MDPeabody, MA 019601386628501
- Elite Bor-Shavit, MDLancaster, MA 015231104303858
- Andre Witkin, M.D.Boston, MA 021111285811216
Common questions
What is Mark D. Barsamian, DO's NPI number?
Mark D. Barsamian, DO's National Provider Identifier (NPI) is 1821204207, issued on May 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark D. Barsamian, DO located?
The NPPES record lists a practice address at 54 Hopedale St Ste 1, Hopedale, MA, 01747. Phone: (774) 396-6905. Providers update this record themselves, so call before visiting.
How can I verify Mark D. Barsamian, DO's license?
NPPES lists Massachusetts license number 243559, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark D. Barsamian, DO prescribe under Medicare Part D?
In 2024, Mark D. Barsamian, DO had 34 Medicare Part D claims for 11 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.