John Ernest Ludwigsen, DDS
Dentist · Sister Bay, WI
John Ernest Ludwigsen, DDS is a dentist with a practice address in Sister Bay, Wisconsin, and NPI 1669540589, issued on Nov 30, 2006. Check the license (Wisconsin 5084015, as entered in NPPES) with the Wisconsin board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Ernest Ludwigsen
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 5084015 WI
Self-reported in NPPES; status is on the state search - Practice location
- 940 South Bayshore Drive, Sister Bay, WI 54234
- Phone
- (920) 854-6556
- Enumerated
- Nov 30, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (920) 854-6559
- Entity
- Type 1 · individual
Verify John Ernest Ludwigsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 5084015Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2 dentist records list a practice address in Sister Bay
They are 2 of the 37 NPPES records with a practice address in Sister Bay, and 1,750 dentist records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2 in Sister Bay → All 1,750 in Wisconsin → Every provider in Sister Bay →
Other dentist records in Wisconsin
- Buhisa AbdelkafiRacine, WI1881383586
- Hooman Abdolisereshki, DDSPlymouth, WI1619369279
- Megan Abell, DDSMadison, WI1346477361
- Matthew Abraham, DDSLadysmith, WI1912350448
- Nicolas Abujamra, DDS, MSGreen Bay, WI1720123201
- Guillermo Aceves, DDSJanesville, WI1447090766
- Amber Ackerman, DMDMount Horeb, WI1497646509
- Erica Adams, DMDMadison, WI1275101909
- Hala Afifa, DDSMilwaukee, WI1891363198
- Aarushi Agarwal, DMDMadison, WI1841977717
Common questions
What is John Ernest Ludwigsen, DDS's NPI number?
John Ernest Ludwigsen, DDS's National Provider Identifier (NPI) is 1669540589, issued on Nov 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Ernest Ludwigsen, DDS located?
The NPPES record lists a practice address at 940 South Bayshore Drive, Sister Bay, WI, 54234. Phone: (920) 854-6556. Providers update this record themselves, so call before visiting.
How can I verify John Ernest Ludwigsen, DDS's license?
NPPES lists Wisconsin license number 5084015, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
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.