Individual provider · Type 1 NPI

Aaron Lee Haag, DO

Internal Medicine Physician · Hershey, PA

NPI number 1669934600 Active

Practice location

500 University Dr
Hershey, PA 17033-2360

Call (800) 243-1455 Map

Other practice locations

  • 4727 Friendship Ave Ste 200, Pittsburgh, PA 15224-1778 · (412) 235-5810
  • 1307 Federal St Ste B300, Pittsburgh, PA 15212-4775 · (412) 359-3751

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000XOS022136 (PA)

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 1669934600

Aaron Lee Haag, DO's National Provider Identifier is 1669934600, issued on Apr 1, 2019. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Hershey, PA. The record was last updated on Jun 23, 2026.