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

Individual provider Family Medicine Physician · NPI 1689887010

William James Gaertner, MD is a Family Medicine Physician in Milwaukee, Wisconsin. Practices as a sole proprietor. Licensed in Wisconsin.

Licensed in
WI
In the registry since
2007
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

3930 S Lake Dr Unit 501
Milwaukee, WI 53235-5238
Phone: (414) 483-2808
Fax: (414) 747-8874
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 23319 (WI)

Record details

NPI number1689887010
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 8, 2007
Last updated in NPPESJuly 8, 2007

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