NPPES file of Aug 9, 2026

Ernst A. Cornielsen, D.D.S.

Oral and Maxillofacial Surgery (Dentist) · Lake Geneva, WI

Ernst A. Cornielsen, D.D.S. is an oral and maxillofacial surgery (dentist) with a practice address in Lake Geneva, Wisconsin, and NPI 1447268651, issued on Aug 3, 2006. Check the license (Wisconsin 1732-G, 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.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1447268651
Name
Ernst A. Cornielsen
Credential
D.D.S.
Primary taxonomy
Oral and Maxillofacial Surgery (Dentist) 1223S0112X
License number
1732-G WI
Self-reported in NPPES; status is on the state search
Practice location
312 Center St, Lake Geneva, WI 53147
Phone
(262) 248-2868
Enumerated
Aug 3, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(262) 248-7274
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest oral and maxillofacial surgery (dentist) records → All 155 in Wisconsin → Look up another NPI →

Also registered at 312 Center St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Robert Conlon, D.D.S.Oral and Maxillofacial Surgery (Dentist)1487668612
  2. Matthew Heinz, DDS, MDOral and Maxillofacial Surgery (Dentist)1972129427

Verify Ernst A. Cornielsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 1732-G    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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Ernst A. Cornielsen among 155 oral and maxillofacial surgery (dentist) records in Wisconsin

Ernst A. Cornielsen, D.D.S. is one of 155 oral and maxillofacial surgery (dentist) records with a practice address in Wisconsin. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 45% newer
  • In a Medicare fileNo · 64% of these records are
  • In the CMS Doctors and Clinicians fileNo · 19% of these records are
  • Record last updated2007 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223S0112X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Oral and Maxillofacial Surgery (Dentist) providers in Wisconsin

There are 155 oral and maxillofacial surgery (dentist) records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 155 in Wisconsin → Every provider in Lake Geneva → Oral and Maxillofacial Surgery (Dentist) nationwide →

The 8 oral and maxillofacial surgery (dentist) records with the nearest ZIP codes

  1. Robert Conlon, D.D.S.Lake Geneva, WI 531471487668612
  2. Matthew Heinz, DDS, MDLake Geneva, WI 531471972129427
  3. Gregory Santarelli, DDS SCKenosha, WI 531441578640488
  4. Dale Willoughby, DDSKenosha, WI 531421700880556
  5. Brian Carr, DMD MDOak Creek, WI 531541093270217
  6. Mary Ballard, DDSMt Pleasant, WI 531771528381357
  7. Anthony Lotesto, DMDSturtevant, WI 531771861945826
  8. Joseph BestWaukesha, WI 531881881702439

Common questions

What is Ernst A. Cornielsen, D.D.S.'s NPI number?

Ernst A. Cornielsen, D.D.S.'s National Provider Identifier (NPI) is 1447268651, issued on Aug 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ernst A. Cornielsen, D.D.S. located?

The NPPES record lists a practice address at 312 Center St, Lake Geneva, WI, 53147. Phone: (262) 248-2868. Providers update this record themselves, so call before visiting.

How can I verify Ernst A. Cornielsen, D.D.S.'s license?

NPPES lists Wisconsin license number 1732-G, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.