Vassilios James Bezzerides, M.D., PH.D.

Primary specialty

Clinical Cardiac Electrophysiology PhysicianTaxonomy code 207RC0001X

License

239833 Issued in MA

Practice address

300 Longwood Ave # Enders12
Boston, MA 02115-5724

Phone

(617) 919-4290

NPI assigned

May 12, 2008

Last updated

Jan 13, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in MA, NH2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Pediatric Medicine

Education

Harvard Medical School, 2006

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mary Hitchcock Memorial HospitalGroup PAC ID 4486561164, 1,269 clinicians

Boston Childrens Heart Foundation IncGroup PAC ID 8729071675, 102 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Boston Children's Hospital Hospital, Boston, MA, CCN 223302

Merit-based Incentive Payment System (MIPS)

Final score

79.66 of 100Reported as apm

Quality

53.51

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: vbezzerides168333@direct.dartmouth-hitchcock.org
• Direct secure messaging: vbezzerides26277@direct.bostonchildrens.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Boston Childrens Heart Foundation Inc

  • Pediatric Cardiology Physician
  • Boston, MA
  • NPI 1982680922

  Clinical Cardiac Electrophysiology

  Medicare reassignment Care Compare group NPD
• Mary Hitchcock Memorial Hospital

  • General Acute Care Hospital
  • Lebanon, NH
  • NPI 1023092053
  Medicare reassignment Care Compare group NPD
• Coastal Medical Associates

  • Anesthesiology Physician
  • Weymouth, MA
  • NPI 1932175684
  Medicare reassignment NPD
• Dartmouth-Hitchcock Clinic

  • Family Medicine Physician
  • Manchester, NH
  • NPI 1386697803

  Pediatrics

  Medicare reassignment NPD
• Dartmouth-Hitchcock Clinic

  • Internal Medicine Physician
  • Lebanon, NH
  • NPI 1548210198

  Pediatrics

  Medicare reassignment NPD
• Mary Hitchcock Memorial Hospital

  dba Hampstead Hospital

  • Psychiatric Hospital
  • Hampstead, NH
  • NPI 1699584219
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Children's Hospital Corporation

  dba Boston Children's Hospital

  • Children's Hospital
  • Boston, MA
  • NPI 1710087127
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1210550400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768262400000",
    "number": "1194992834",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 LONGWOOD AVE",
            "address_2": "CHILDREN'S HOSPITAL BOSTON, HOUSE STAFF LOUNGE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021155724",
            "telephone_number": "617-355-6363"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 LONGWOOD AVE # ENDERS12",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021155724",
            "telephone_number": "617-919-4290"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "100 Hitchcock Way",
            "address_purpose": "LOCATION",
            "city": "Manchester",
            "state": "NH",
            "postal_code": "031044125",
            "country_code": "US",
            "telephone_number": "603-695-2500",
            "fax_number": "603-640-1228",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BEZZERIDES",
        "first_name": "VASSILIOS",
        "middle_name": "JAMES",
        "name_prefix": "Dr.",
        "credential": "M.D., PH.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-05-12",
        "last_updated": "2026-01-13",
        "certification_date": "2026-01-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Clinical Cardiac Electrophysiology",
            "state": "MA",
            "license": "239833",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "229151",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Clinical Cardiac Electrophysiology Physician in Boston, MA
• Providers in Boston, MA by specialty
• Clinical Cardiac Electrophysiology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.