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

John P Gerlach, MD

Individual provider Internal Medicine Physician · NPI 1841379120

John P Gerlach, MD is an Internal Medicine Physician in Milwaukee, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2006.

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

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

2311 N Prospect
Milwaukee, WI 53211
Phone: (414) 319-3000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 24312 (WI)

Record details

NPI number1841379120
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 6, 2006
Last updated in NPPESJuly 8, 2007

Other providers in Milwaukee