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

DR. SEKAR KATHIRESAN MD
NPI 1134101280
Internal Medicine in Boston, MA

Active since November 15, 2005
25 NEW CHARDON ST, NC25-301, BOSTON, MA 02114(617) 726-9292(617) 724-6767 Get Directions Write a Review

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

About Dr. Sekar Kathiresan Md NPPES

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

DR. SEKAR KATHIRESAN MD (NPI 1134101280) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (160930) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1134101280
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. SEKAR KATHIRESANCredential: MD
Location Address25 NEW CHARDON ST, NC25-301Boston, MA 02114
Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894
Fax(617) 724-6767
Sole ProprietorNo
Enumeration DateNovember 15, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1134101280 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in MA · 160930
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
25 NEW CHARDON ST, Boston, MA 02114

Other Identifiers 3

Medicaid3204677MA
OtherJ21982MA · Bcbs Ma
Other466507MA · Tufts Health Plan

Other Providers at the Same Location NPPES 11

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

Dietitian, Registered
25 NEW CHARDON ST
BOSTON, MA 02114
Dentist (General Practice)
25 NEW CHARDON ST
BOSTON, MA 02114
Dietitian, Registered
25 NEW CHARDON ST
BOSTON, MA 02114
Registered Nurse (Cardiac Rehabilitation)
25 NEW CHARDON ST, SUITE 301
BOSTON, MA 02114
Dentist (General Practice)
25 NEW CHARDON ST
BOSTON, MA 02114
Registered Nurse (Cardiac Rehabilitation)
25 NEW CHARDON ST, SUITE 301
BOSTON, MA 02114
Registered Nurse
25 NEW CHARDON ST, SUITE 301
BOSTON, MA 02114
Internal Medicine (Cardiovascular Disease)
25 NEW CHARDON ST, NC25-301
BOSTON, MA 02114

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 Sekar Kathiresan's NPI number?

The NPI number for Sekar Kathiresan is 1134101280. It was assigned to this individual provider in the NPPES registry on November 15, 2005.

Where is Sekar Kathiresan located?

Sekar Kathiresan practices at 25 New Chardon St Nc25-301, Boston, MA 02114. The listed phone number is (617) 726-9292.

What is Sekar Kathiresan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Sekar Kathiresan 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 34 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.