Individual provider · Type 1 NPI

Catherine A. Hajek, MD

Internal Medicine Physician · Sioux Falls, SD

NPI number 1528219664 Active

Practice location

1309 W 17th St Ste G01
Sioux Falls, SD 57104-4664

Call (605) 312-3400 Map

Mailing address

PO Box 5074
Sioux Falls, SD 57117-5074

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000X8557 (SD)
Internal Medicine Physician 207R00000X261236 (NY)

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 1528219664

Catherine A. Hajek, MD's National Provider Identifier is 1528219664, issued on Oct 7, 2008. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Sioux Falls, SD. The record was last updated on Dec 9, 2025.