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

William J Cannon, MD

Individual provider Internal Medicine Physician · NPI 1912971243

William J Cannon, MD is an Internal Medicine Physician in Fort Atkinson, Wisconsin. Licensed in Illinois and Wisconsin. Registered with an NPI since 2006.

Licensed in
IL, WI
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

500 McMillen St
Fort Atkinson, WI 53538-1233
Phone: (920) 563-5571
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 65437-20 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 36081211 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 65437 (WI)

Record details

NPI number1912971243
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 14, 2006
Last updated in NPPESOctober 7, 2022
Certification dateOctober 7, 2022
Mailing addressPo Box 249, Fort Atkinson, WI 53538-0249

Other providers in Fort Atkinson