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DR. VASSILIOS JAMES BEZZERIDES M.D., PH.D.
NPI 1194992834
Internal Medicine - Clinical Cardiac Electrophysiology in Boston, MA

Active since May 12, 2008PECOS EnrolledAccepts Medicare Assignment
76.01/100
CMS Quality Rating
300 LONGWOOD AVE # ENDERS12, BOSTON, MA 02115(617) 919-4290 Get Directions Write a Review

NPPES record last updated: January 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 13, 2026, Oct 3, 2020 (2 updates tracked since 2020).

About Dr. Vassilios James Bezzerides M.d., Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. VASSILIOS JAMES BEZZERIDES M.D., PH.D. (NPI 1194992834) is an individual clinical cardiac electrophysiology provider in Boston, Massachusetts, licensed in Massachusetts (239833) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS, is affiliated with Boston Children's Hospital, and maintains a secondary practice location in Manchester.

NPPES Registry Identity

NPI1194992834
Entity TypeIndividualMale
Primary Taxonomy207RC0001X
Provider Legal NameDR. VASSILIOS JAMES BEZZERIDESCredential: M.D., PH.D.
Location Address300 LONGWOOD AVE # ENDERS12Boston, MA 02115-5724
Mailing Address300 Longwood Ave, Children's Hospital Boston, House Staff LoungeBoston, MA 02115-5724 · (617) 355-6363
Phone(617) 919-4290
Sole ProprietorNo
Medical School CMSHarvard Medical SchoolGraduated 2006
Enumeration DateMay 12, 2008
Last NPPES UpdateJanuary 13, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 13, 2026
✔ NPI 1194992834 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians
Taxonomy Code207RC0001X
License✔ Licensed in MA · 239833
Definition
A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.
Also ListedPediatricsTaxonomy 208000000X · License 229151 (MA)
300 LONGWOOD AVE # ENDERS12, Boston, MA 02115
Open in Google Maps ↗

Secondary Practice Location 1

Location 1100 Hitchcock WayManchester, NH 03104-4125 · Phone (603) 695-2500 · Fax (603) 640-1228

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Vassilios James Bezzerides M.d., Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID547497737
PECOS Enrollment IDI20131213001264, I20150527001530
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
28 services22 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Boston Children's Hospital

Childrens · Boston, MA
OwnershipVoluntary non-profit - Private
CMS Certification Number223302
Location300 Longwood AvenueBoston, MA 02115 · Suffolk County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.01/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality65.31
Promoting Interoperability100
Improvement Activities40
Cost54.74

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Vassilios Bezzerides's NPI number?

The NPI number for Vassilios Bezzerides is 1194992834. It was assigned to this individual provider in the NPPES registry on May 12, 2008.

Where is Vassilios Bezzerides located?

Vassilios Bezzerides practices at 300 Longwood Ave # Enders12, Boston, MA 02115. The listed phone number is (617) 919-4290.

What is Vassilios Bezzerides's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Is Vassilios Bezzerides enrolled in Medicare?

Yes. Vassilios Bezzerides is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Vassilios Bezzerides accept?

Health plans from Anthem Blue Cross and Blue Sheld and Anthem Blue Cross and Blue Shield list Vassilios Bezzerides as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Vassilios Bezzerides affiliated with any hospitals?

According to CMS data, Vassilios Bezzerides is affiliated with Boston Children's Hospital.

When was this NPI record last updated?

The NPPES record for Vassilios Bezzerides was last updated on January 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.