Individual provider · Type 1 NPI

Dorothy J. Zajac, MD

Internal Medicine Physician · Chester, IL

NPI number 1972592210 Active

Practice location

1315 Lehmen Dr
Chester, IL 62233-2542

Call (618) 826-4571 Map

Fax (618) 826-3229

Mailing address

PO Box 306, 120 N Crosby Ave
Janesville, WI 53547-0306

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician 207R00000X22841 (WI)
Internal Medicine Physician Primary 207R00000XNone listed

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…

19 other providers at this address

About NPI 1972592210

Dorothy J. Zajac, MD's National Provider Identifier is 1972592210, issued on Oct 19, 2005. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Chester, IL. The record was last updated on Jul 13, 2026.