KOJI MIWA MD
NPI 1457226599
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Boston, MA

Q: What is Koji Miwa's NPI number?

The NPI number for Koji Miwa is 1457226599. It was assigned to this individual provider in the NPPES registry on October 8, 2025.

Q: What is Koji Miwa'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 Koji Miwa was last updated on July 14, 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 October 08, 2025PECOS Enrolled

300 LONGWOOD AVE, BOSTON, MA 02115(617) 355-6000 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 14, 2026, Oct 8, 2025 (2 updates tracked since 2025).

On this page

About Koji Miwa Md NPPES

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

KOJI MIWA MD (NPI 1457226599) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Boston, Massachusetts, licensed in New York (345050) and active in the NPI registry since October 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2014).

NPPES Registry Identity

NPI1457226599

Entity TypeIndividualMale

Primary Taxonomy208G00000X

Provider Legal NameKOJI MIWACredential: MD

Location Address300 LONGWOOD AVEBoston, MA 02115-5724

Mailing Address300 Longwood AveBoston, MA 02115-5724 · (617) 355-6000

Phone(617) 355-6000

Sole ProprietorNo

Medical School CMSOtherGraduated 2014

Enumeration DateOctober 8, 2025

Last NPPES UpdateJuly 14, 20262 updates tracked since enumeration

NPPES CertifiedJuly 14, 2026

✔ NPI 1457226599 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 NY · 345050

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.

300 LONGWOOD AVE, Boston, MA 02115

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)

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

PECOS PAC ID8123582186

PECOS Enrollment IDI20260710000382

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 Koji Miwa reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Trustees Of Columbia University In The City Of New York

180 mi

Surgery

622 W 168TH ST
New York, NY 10032

Reassigned Medicare billing, New York enrollment
3,922 clinicians in this Medicare group

NPI 1508266347 (646) 317-7111

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 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

$189.86 typical visit price

range $63.72 – $189.86

Typical copayment $47.46 (range $15.93 – $47.46)

Most-billed visit code 99205

Established Patient

$78.84 typical visit price

range $21.07 – $155.29

Typical copayment $19.71 (range $5.26 – $38.82)

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.

JULIE ANN HANSEN LCSW

Social Worker (Clinical)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (857) 218-4309

MS. ANNA ROGLIERI

Nurse Practitioner (Psychiatric/Mental Health)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

STEPHEN G. FLYNN M.D.

Anesthesiology (Pediatric Anesthesiology)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

MRS. LAUREN ASHLEY SHARIS P.T., D.P.T

Physical Therapist

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-7216

MS. SOYUN KWAN LICSW

Social Worker (Clinical)

300 LONGWOOD AVE, CHILDREN'S HOSPITAL BOSTON
BOSTON, MA 02115

Suffolk County (617) 355-0567

PUJA BANKA M.D.

Pediatrics

300 LONGWOOD AVE, BADER 203
BOSTON, MA 02115

Suffolk County (617) 355-6363

MR. COURTNEY SULLIVAN FRATTO CPNP

Nurse Practitioner (Pediatrics)

300 LONGWOOD AVE, HUNNEWELL BUILDING 322
BOSTON, MA 02115

Suffolk County (857) 218-4085

DR. ELIZABETH S TAGLAUER M.D., PH.D.

Pediatrics (Neonatal-Perinatal Medicine)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

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 Koji Miwa's NPI number?

The NPI number for Koji Miwa is 1457226599. It was assigned to this individual provider in the NPPES registry on October 8, 2025.

Where is Koji Miwa located?

Koji Miwa practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.

What is Koji Miwa's specialty?

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

Is Koji Miwa enrolled in Medicare?

Yes. Koji Miwa is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Koji Miwa's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Koji Miwa reassigns Medicare benefits to Trustees Of Columbia University In The City Of New York (New York, NY). 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 Koji Miwa'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 Koji Miwa was last updated on July 14, 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.