William J. Cannon, MD
Internal Medicine Physician · Fort Atkinson, WI
William J. Cannon, MD is an internal medicine physician with a practice address in Fort Atkinson, Wisconsin, and NPI 1912971243, issued on Feb 14, 2006. Check the license (Wisconsin 65437-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William J. Cannon
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 65437-20 WI
65437 WI
36081211 IL
Self-reported in NPPES; status is on the state search - Practice location
- 500 Mcmillen St, Fort Atkinson, WI 53538
- Phone
- (920) 563-5571
- Enumerated
- Feb 14, 2006
- Record last updated
- Oct 7, 2022
- Medicaid ID
- 36081211 IL
- Entity
- Type 1 · individual
Also registered at 500 Mcmillen St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Akm Abuhiya, MDPediatrics Physician1164043097
- Leeann Kinney, LPCMental Health Counselor1962196931
- Laura Koenig, M.D.Internal Medicine Physician1700881869
- Melanie KollmansbergerSocial Worker1528790078
- Catherine Sweeney, MDPediatrics Physician1649699067
- Craig Sweeney, LPC-ITProfessional Counselor1093437956
Verify William J. Cannon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 65437-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9 internal medicine physician records list a practice address in Fort Atkinson
They are 9 of the 361 NPPES records with a practice address in Fort Atkinson, and 2,078 internal medicine physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 9 in Fort Atkinson → All 2,078 in Wisconsin → Every provider in Fort Atkinson →
Other internal medicine physician records in Wisconsin
- Sheetal Aatrai, MDMarshfield, WI1417568965
- Khalid Abdelgadir, MDManitowoc, WI1407433295
- Mesfin Abdissa, MDMilwaukee, WI1376579417
- Anas Abed, MDMadison, WI1659002566
- Margaret Abel, MDRhinelander, WI1477590487
- Mesfin Abera, M.D.Beaver Dam, WI1972852390
- Vidthya Abraham, M.D.Madison, WI1861836058
- Ismael Abu Limon, MDGreenfield, WI1467945543
- Amjed Abu Muhanna, MDMarinette, WI1861514135
- Satish Achanti, MDAppleton, WI1982711198
Common questions
What is William J. Cannon, MD's NPI number?
William J. Cannon, MD's National Provider Identifier (NPI) is 1912971243, issued on Feb 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William J. Cannon, MD located?
The NPPES record lists a practice address at 500 Mcmillen St, Fort Atkinson, WI, 53538. Phone: (920) 563-5571. Providers update this record themselves, so call before visiting.
How can I verify William J. Cannon, MD's license?
NPPES lists Wisconsin license number 65437-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.