Individual provider · Type 1 NPI

Holly Ann Mazur, MD

Internal Medicine Physician · Acton, MA

NPI number 1295780617 Active · reactivated Sep 16, 2026

Practice location

321 Main St
Acton, MA 01720-3799

Call (978) 635-8700 Map

Fax (978) 635-8923

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician 207R00000X61790 (CT)
Internal Medicine Physician Primary 207R00000X81939 (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 1295780617

Holly Ann Mazur, MD's National Provider Identifier is 1295780617, issued on May 24, 2006. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Acton, MA. The record was last updated on Sep 16, 2026.