Individual provider · Type 1 NPI

Amy Tesar, DO

Internal Medicine Physician · Mason City, IA

NPI number 1841307477 Active

Practice location

1000 4th St SW
Mason City, IA 50401-2800

Call (641) 428-6999 Map

Fax (641) 428-6678

Mailing address

621 S Illinois Ave, Suite 103
Mason City, IA 50401-5489

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician 207R00000X03524 (IA)
Hospitalist Physician 208M00000X3524 (IA)
Internal Medicine Physician Primary 207R00000XDO-03524 (IA)

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 1841307477

Amy Tesar, DO's National Provider Identifier is 1841307477, issued on Aug 23, 2006. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Mason City, IA. The record was last updated on Jul 14, 2025.