MARK S. KASSIS M.D.
NPI 1356309744
Internal Medicine in Springfield, MA

Q: What is Mark Kassis's NPI number?

The NPI number for Mark Kassis is 1356309744. It was assigned to this individual provider in the NPPES registry on May 3, 2006.

Q: What is Mark Kassis's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark Kassis was last updated on February 24, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years 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 May 03, 2006

3400 MAIN ST, SPRINGFIELD, MA 01107(413) 794-9560(413) 794-5884 Get Directions Write a Review

NPPES record last updated: February 24, 2017. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 24, 2017, Dec 16, 2016 (2 updates tracked since 2016).

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About Mark S. Kassis M.d. NPPES

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

MARK S. KASSIS M.D. (NPI 1356309744) is an individual internal medicine provider in Springfield, Massachusetts, licensed in Massachusetts (72426) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1356309744

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameMARK S. KASSISCredential: M.D.

Location Address3400 MAIN STSpringfield, MA 01107-1113

Mailing Address280 Chestnut St, 2nd FlSpringfield, MA 01199-1001 · (413) 794-5700

Phone(413) 794-9560

Fax(413) 794-5884

Sole ProprietorNo

Enumeration DateMay 3, 2006

Last NPPES UpdateFebruary 24, 20172 updates tracked since enumeration

✔ NPI 1356309744 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MA · 72426

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.

Also ListedPediatricsTaxonomy 208000000X · License 73426 (MA)

3400 MAIN ST, Springfield, MA 01107

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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.

SUNDERS DORCELY ARNP

Nurse Practitioner (Family)