Vassilios James Bezzerides, M.D., PH.D.
Clinical Cardiac Electrophysiology Physician · Boston, MA
Vassilios James Bezzerides, M.D., PH.D. is a clinical cardiac electrophysiology physician with a practice address in Boston, Massachusetts, and NPI 1194992834, issued on May 12, 2008. Check the license (Massachusetts 239833, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Vassilios James Bezzerides
- Credential
- M.D., PH.D.
- Primary taxonomy
- Clinical Cardiac Electrophysiology Physician 207RC0001X
- License numbers
- 239833 MA
229151 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Longwood Ave # Enders12, Boston, MA 02115
- Phone
- (617) 919-4290
- Enumerated
- May 12, 2008
- Record last updated
- Jan 13, 2026
- Medicare enrollment
- Enrolled (PECOS I20150527001530); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2006
- Entity
- Type 1 · individual
8 nearest clinical cardiac electrophysiology physician records → All 116 in Massachusetts → Look up another NPI →
Verify Vassilios James Bezzerides in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 239833Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average clinical cardiac electrophysiology physician in 2024
38 Medicare Part D claims, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D.
Most prescribed
- Propranolol Hcl17 claims
- Enalapril Maleate13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 76 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $44.74
1 payment: food and beverage; the largest payer was Boston Scientific Corporation. The 3,167 providers of this specialty with any payment received $10,651.37 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.
2 hospitals and group practices
- Mary Hitchcock Memorial HospitalManchester, NH · Acute Care Hospitals3 of 5 stars
- Boston Childrens Heart Foundation IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Vassilios James Bezzerides among 116 clinical cardiac electrophysiology physician records in Massachusetts
Vassilios James Bezzerides, M.D., PH.D. is one of 116 clinical cardiac electrophysiology physician records with a practice address in Massachusetts. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 39% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2006 · median 2002 among the 93 with a school on file
- Record last updated2026 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0001X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Cardiac Electrophysiology Physician providers in Massachusetts
There are 116 clinical cardiac electrophysiology physician records in Massachusetts.
All 116 in Massachusetts → Every provider in Boston → Clinical Cardiac Electrophysiology Physician nationwide →
The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes
- Elad Anter, M.D.Boston, MA 021151891832499
- Laura Bevilacqua, MDBoston, MA 021151700875507
- Elizabeth Dewitt, M.D.Boston, MA 021151851527402
- Laurence Epstein, MDBoston, MA 021151457318859
- Pipin Kojodjojo, M,D., PH.D.Boston, MA 021151033440474
- Bruce Koplan, MDBoston, MA 021151083663298
- Douglas Mah, MDBoston, MA 021151912062324
- Melanie Maytin, M.D.Boston, MA 021151619909132
Common questions
What is Vassilios James Bezzerides, M.D., PH.D.'s NPI number?
Vassilios James Bezzerides, M.D., PH.D.'s National Provider Identifier (NPI) is 1194992834, issued on May 12, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Vassilios James Bezzerides, M.D., PH.D. located?
The NPPES record lists a practice address at 300 Longwood Ave # Enders12, Boston, MA, 02115. Phone: (617) 919-4290. Providers update this record themselves, so call before visiting.
How can I verify Vassilios James Bezzerides, M.D., PH.D.'s license?
NPPES lists Massachusetts license number 239833, 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 Vassilios James Bezzerides, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Vassilios James Bezzerides, M.D., PH.D. had 38 Medicare Part D claims; the average among clinical cardiac electrophysiology physician prescribers was 1,710. Part D covers Medicare prescriptions only.
What is Vassilios James Bezzerides, M.D., PH.D.'s MIPS final score?
The 2023 MIPS final score is 76 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.