ALEXANDER BYUN
NPI 1437683414
Thoracic Surgery (Cardiothoracic Vascular Surgery) in New Brunswick, NJ

Q: What is Alexander Byun's NPI number?

The NPI number for Alexander Byun is 1437683414. It was assigned to this individual provider in the NPPES registry on April 17, 2017.

Q: What is Alexander Byun's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Q: When was this NPI record last updated?

The NPPES record for Alexander Byun was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since April 17, 2017PECOS Enrolled

1 ROBERT WOOD JOHNSON PL, NEW BRUNSWICK, NJ 08901(973) 972-4417 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 9, 2026, Apr 17, 2017 (2 updates tracked since 2017).

On this page

About Alexander Byun NPPES

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

ALEXANDER BYUN (NPI 1437683414) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in New Brunswick, New Jersey, licensed in New Jersey (B96960197110891) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS and is a graduate of Other (2017).

NPPES Registry Identity

NPI1437683414

Entity TypeIndividualMale

Primary Taxonomy208G00000X

Provider Legal NameALEXANDER BYUN

Location Address1 ROBERT WOOD JOHNSON PLNew Brunswick, NJ 08901-1928

Mailing Address10 Provost St Unit 2608Jersey City, NJ 07302-5657 · (201) 543-9082

Phone(973) 972-4417

Sole ProprietorNo

Medical School CMSOtherGraduated 2017

Enumeration DateApril 17, 2017

Last NPPES UpdateJuly 9, 20262 updates tracked since enumeration

NPPES CertifiedJuly 9, 2026

✔ NPI 1437683414 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians

Taxonomy Code208G00000X

License✔ Licensed in NJ · B96960197110891

Definition

A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.

1 ROBERT WOOD JOHNSON PL, New Brunswick, NJ 08901

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alexander Byun is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9032677547

PECOS Enrollment IDI20260814003817

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 Reassignment

Medicare enrollment records show Alexander Byun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Barnabas Health Medical Group PC

15 mi

Specialist

225 WILLIAMSON ST
Elizabeth, NJ 07202

Reassigned Medicare billing, New Jersey enrollment
1,894 clinicians in this Medicare group

NPI 1841557246 (888) 724-7123

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 08901 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

$190.92 typical visit price

range $63.84 – $190.92

Typical copayment $47.73 (range $15.96 – $47.73)

Most-billed visit code 99205

Established Patient

$79.09 typical visit price

range $20.97 – $155.92

Typical copayment $19.77 (range $5.24 – $38.98)

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.

Other Providers at the Same Location NPPES 20

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

LOKESH LAHOTI

Internal Medicine

1 ROBERT WOOD JOHNSON PL
NEW BRUNSWICK, NJ 08901

Middlesex County (732) 823-3000

BILLIE S FYFE KIRSCHNER MD

Pathology (Anatomic Pathology)

1 ROBERT WOOD JOHNSON PL, ROBERT WOOD JOHNSON UNIVERSITY HOSPITAL NEW BRUNSWICK
NEW BRUNSWICK, NJ 08901

Middlesex County (732) 937-8651

LISANNE HAUCK

Pediatrics (Pediatric Critical Care Medicine)

1 ROBERT WOOD JOHNSON PL, ROBERT WOOD JOHNSON UNIVERSITY HOSPITAL - NEW BRUNSWICK
NEW BRUNSWICK, NJ 08901

Middlesex County (732) 235-7900

DANIEL NOTTERMAN

Pediatrics (Pediatric Critical Care Medicine)

1 ROBERT WOOD JOHNSON PL, ROBERT WOOD JOHNSON UNIVERSITY HOSPITAL - NEW BRUNSWICK
NEW BRUNSWICK, NJ 08901

Middlesex County (732) 235-7900

SHAUL COHEN MD

Anesthesiology

1 ROBERT WOOD JOHNSON PL
NEW BRUNSWICK, NJ 08901

Middlesex County (732) 937-8841

AMANDA BORHAM M.D.

Internal Medicine

1 ROBERT WOOD JOHNSON PL
NEW BRUNSWICK, NJ 08901

Middlesex County (732) 235-7794

DEVON AMANDA ORZANO APN

Nurse Practitioner (Acute Care)

1 ROBERT WOOD JOHNSON PL, 2 CORE - RM. 257
NEW BRUNSWICK, NJ 08901

Middlesex County (732) 828-3000

GAMAL MOHAMED MD

Emergency Medicine

1 ROBERT WOOD JOHNSON PL
NEW BRUNSWICK, NJ 08901

Middlesex County (732) 828-3000

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 Alexander Byun's NPI number?

The NPI number for Alexander Byun is 1437683414. It was assigned to this individual provider in the NPPES registry on April 17, 2017.

Where is Alexander Byun located?

Alexander Byun practices at 1 Robert Wood Johnson Pl, New Brunswick, NJ 08901. The listed phone number is (973) 972-4417.

What is Alexander Byun's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Alexander Byun enrolled in Medicare?

Yes. Alexander Byun is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Alexander Byun's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Byun reassigns Medicare benefits to Barnabas Health Medical Group PC (Elizabeth, NJ). The 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 Alexander Byun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alexander Byun accept?

Health plans from Oscar Health list Alexander Byun 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.

When was this NPI record last updated?

The NPPES record for Alexander Byun was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.