1. Home
  2. Directory
  3. Massachusetts
  4. Wellesley
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

JEROME P KASSIRER M.D.
NPI 1184663189
Internal Medicine in Wellesley, MA

Active since June 05, 2006
21 SQUIRREL RD, WELLESLEY, MA 02481(781) 237-1971 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Jerome P Kassirer M.d. NPPES

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

JEROME P KASSIRER M.D. (NPI 1184663189) is an individual internal medicine provider in Wellesley, Massachusetts, licensed in Massachusetts (27094) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1184663189
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJEROME P KASSIRERCredential: M.D.
Location Address21 SQUIRREL RDWellesley, MA 02481-3116
Mailing Address21 Squirrel RdWellesley, MA 02481-3116 · (781) 237-1971
Phone(781) 237-1971
Sole ProprietorNo
Enumeration DateJune 5, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1184663189 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 · 27094
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.
21 SQUIRREL RD, Wellesley, MA 02481
Open in Google Maps ↗

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 Jerome Kassirer's NPI number?

The NPI number for Jerome Kassirer is 1184663189. It was assigned to this individual provider in the NPPES registry on June 5, 2006.

Where is Jerome Kassirer located?

Jerome Kassirer practices at 21 Squirrel Rd, Wellesley, MA 02481. The listed phone number is (781) 237-1971.

What is Jerome Kassirer'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 Jerome Kassirer was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.