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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. EUNICE L KWAK MD, PHD
NPI 1184605479
Internal Medicine - Medical Oncology in Boston, MA

Active since November 14, 2005
55 FRUIT ST YAW 7, HEMATOLOGY/ONCOLOGY, BOSTON, MA 02114(617) 726-6254(617) 724-6919 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About Dr. Eunice L Kwak Md, Phd NPPES

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

DR. EUNICE L KWAK MD, PHD (NPI 1184605479) is an individual medical oncology provider in Boston, Massachusetts, licensed in Massachusetts (205757) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1184605479
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameDR. EUNICE L KWAKCredential: MD, PHD
Location Address55 FRUIT ST YAW 7, HEMATOLOGY/ONCOLOGYBoston, MA 02114-2621
Mailing AddressPo Box 9142, Mass. General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894
Phone(617) 726-6254
Fax(617) 724-6919
Sole ProprietorNo
Enumeration DateNovember 14, 2005
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1184605479 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in MA · 205757
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
Also ListedInternal MedicineTaxonomy 207R00000X · License 205757 (MA)
55 FRUIT ST YAW 7, Boston, MA 02114
Open in Google Maps ↗

Other Identifiers 3

OtherJ26132MA · Bcbs Of Ma
Other205757MA · Tufts Health Plan
Medicaid2009170MA

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. NOOPUR SURESH RAJE MD
Internal Medicine (Medical Oncology)
55 FRUIT ST YAW 7, HEMATOLOGY/ONCOLOGY
BOSTON, MA 02114
Suffolk County (617) 724-4000
DR. PHILIP CRAWFORD AMREIN MD
Internal Medicine (Medical Oncology)
55 FRUIT ST YAW 7, HEMATOLOGY ONCOLOGY
BOSTON, MA 02114
Suffolk County (617) 726-8748
DR. MATTHEW VANDERHEIDEN MD PHD
Internal Medicine (Hematology & Oncology)
55 FRUIT ST YAW 7, MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 724-2241
DR. RACHEL P ROSOVSKY MD
Internal Medicine (Hematology & Oncology)
55 FRUIT ST YAW 7
BOSTON, MA 02114
Suffolk County (617) 726-8743
DAVID CHRISTIAN HARMON
Internal Medicine (Hematology & Oncology)
55 FRUIT ST YAW 7, MASS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-8748

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 Eunice Kwak's NPI number?

The NPI number for Eunice Kwak is 1184605479. It was assigned to this individual provider in the NPPES registry on November 14, 2005.

Where is Eunice Kwak located?

Eunice Kwak practices at 55 Fruit St Yaw 7 Hematology/Oncology, Boston, MA 02114. The listed phone number is (617) 726-6254.

What is Eunice Kwak's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

When was this NPI record last updated?

The NPPES record for Eunice Kwak was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 53 days 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.