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BRENDAN GONTARZ MD
NPI 1023471273
Surgery - Vascular Surgery in North Haven, CT

Active since April 04, 2016PECOS Enrolled
92.22/100
CMS Quality Rating
280 STATE ST, NORTH HAVEN, CT 06473(203) 288-2886(203) 288-2576 Get Directions Write a Review

NPPES record last updated: July 27, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 27, 2026, Jun 22, 2023 (2 updates tracked since 2023).

About Brendan Gontarz Md NPPES

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

BRENDAN GONTARZ MD (NPI 1023471273) is an individual vascular surgery provider in North Haven, Connecticut, licensed in Connecticut (75034) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1023471273
Entity TypeIndividualMale
Primary Taxonomy2086S0129X
Provider Legal NameBRENDAN GONTARZCredential: MD
Location Address280 STATE STNorth Haven, CT 06473-6103
Mailing Address280 State StNorth Haven, CT 06473-6103 · (203) 288-2886 · Fax (203) 288-2576
Phone(203) 288-2886
Fax(203) 288-2576
Sole ProprietorNo
Enumeration DateApril 4, 2016
Last NPPES UpdateJuly 27, 20262 updates tracked since enumeration
NPPES CertifiedJuly 27, 2026
✔ NPI 1023471273 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Vascular SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0129X
License✔ Licensed in CT · 75034
Definition
A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.
280 STATE ST, North Haven, CT 06473
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Brendan Gontarz Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignments

2

Medicare enrollment records show Brendan Gontarz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Connecticut Vascular Center P.C.
Same address
Vascular Surgery
280 STATE ST
North Haven, CT 06473
  • Reassigned Medicare billing, Connecticut enrollment
  • Medicare enrollment name: Connecticut Vascular Center PC
  • 5 clinicians in this Medicare group
NPI 1558494575 (203) 288-2886
Hartford Healthcare Medical Group Specialists, PLLC
28 mi
Surgery
85 SEYMOUR ST STE 415
Hartford, CT 06106
  • Reassigned Medicare billing, Connecticut enrollment
  • 1,921 clinicians in this Medicare group
NPI 1023584216 (860) 246-2071

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06473 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
$93.86 typical visit price
range $60.82 – $183.10
Typical copayment $23.46 (range $15.20 – $45.77)
Most-billed visit code 99203
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
Most-billed visit code 99213
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.

92.22/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality92.15
Promoting Interoperability100
Improvement Activities40
Cost58.82

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. BRIAN W COYLE MD
Surgery (Vascular Surgery)
280 STATE ST
NORTH HAVEN, CT 06473
South Central Connecticut Planning Region (203) 288-2886
DR. ANTOINE M FERNEINI M.D.
Surgery (Vascular Surgery)
280 STATE ST
NORTH HAVEN, CT 06473
South Central Connecticut Planning Region (203) 288-2886
DR. RALPH WAYNE DENATALE M.D.
Surgery (Vascular Surgery)
280 STATE ST
NORTH HAVEN, CT 06473
South Central Connecticut Planning Region (203) 288-2886
CONNECTICUT VASCULAR CENTER P.C.
Surgery (Vascular Surgery)
280 STATE ST
NORTH HAVEN, CT 06473
South Central Connecticut Planning Region (203) 288-2886
MS. NANCY CHIN PA-C
Physician Assistant (Surgical)
280 STATE ST
NORTH HAVEN, CT 06473
South Central Connecticut Planning Region (203) 288-2886

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 Brendan Gontarz's NPI number?

The NPI number for Brendan Gontarz is 1023471273. It was assigned to this individual provider in the NPPES registry on April 4, 2016.

Where is Brendan Gontarz located?

Brendan Gontarz practices at 280 State St, North Haven, CT 06473. The listed phone number is (203) 288-2886.

What is Brendan Gontarz's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Is Brendan Gontarz enrolled in Medicare?

Yes. Brendan Gontarz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Brendan Gontarz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brendan Gontarz reassigns Medicare benefits to 2 organizations: Connecticut Vascular Center P.C. (North Haven, CT) and Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Brendan Gontarz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Brendan Gontarz was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.