Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Michael J. Hartmann, MD

Individual provider Emergency Medicine Physician · NPI 1013073253

Michael J. Hartmann, MD is an Emergency Medicine Physician in Naperville, Illinois. Works from 2 locations. Licensed in Illinois and Wisconsin.

Licensed in
IL, WI
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

801 S Washington St
Naperville, IL 60540-7430
Phone: (630) 527-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1000 Mineral Point Ave, Janesville, WI 53548 — (608) 756-6111

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 036109982 (IL)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 60901-20 (WI)

Record details

NPI number1013073253
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 30, 2006
Last updated in NPPESNovember 25, 2025
Certification dateNovember 25, 2025
Mailing address1000 Mineral Point Ave, Janesville, WI 53548-2940

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