Individual provider · Type 1 NPI

Steven J. Kassels, MD

Internal Medicine Physician · Westfield, MA

NPI number 1154458735 Active

Practice location

125 N Elm St
Westfield, MA 01085-1643

Call (413) 568-6600 Map

Mailing address

125 North Elm Street, 3rd Floor
Westfield, MA 01085

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000X77240 (MA)
Addiction Medicine (Internal Medicine) Physician 207RA0401X77240 (MA)

Internal Medicine Physician: 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 medi…

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About NPI 1154458735

Steven J. Kassels, MD's National Provider Identifier is 1154458735, issued on Feb 28, 2007. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Westfield, MA. The record was last updated on Sep 11, 2025.