James Amstadt, D.D.S.
General Practice Dentistry · Sun Prairie, WI
James Amstadt, D.D.S. is a general practice dentistry with a practice address in Sun Prairie, Wisconsin, and NPI 1982636353, issued on Jul 7, 2006. Check the license (Wisconsin 2433, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James Amstadt
- Credential
- D.D.S.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 2433 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1260 W Main St, Sun Prairie, WI 53590
- Phone
- (608) 834-8603
- Enumerated
- Jul 7, 2006
- Entity
- Type 1 · individual
Also registered at 1260 W Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Peter Lotowski, DMDDentist1548697659
Verify James Amstadt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 2433Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Industry payments in 2024: $4,175.42
2 payments, mostly compensation for serving as faculty or as a speaker for a medical education program; the largest payer was Envista Holdings Corporation. The 40,968 providers of this specialty with any payment received $593.28 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
15 general practice dentistry records list a Sun Prairie practice address
They are 15 of the 485 NPPES records with a Sun Prairie practice address, and 2,269 general practice dentistry records in Wisconsin.
All 15 in Sun Prairie → All 2,269 in Wisconsin → Every provider in Sun Prairie →
Other general practice dentistry records in Wisconsin
- Dennis Abere, DDSWaukesha, WI1962585281
- Caleb Abfall, DDSGreen Bay, WI1336851765
- Margaret Aboagye, DDSRacine, WI1629150289
- Jennifer Abraham, D.D.S.Thiensville, WI1295944619
- Theresa Adamczyk, DDSOshkosh, WI1962882308
- Frances Adjepon-YamoahMadison, WI1689281081
- Mohamed Adl, DDSWest Allis, WI1083640460
- Dennis Adler, DDSMount Horeb, WI1083787626
- Fatima Afridi, DDSMilwaukee, WI1134939267
- Theresa Aftyka, DDSWatertown, WI1154298891
Common questions
What is James Amstadt, D.D.S.'s NPI number?
James Amstadt, D.D.S.'s National Provider Identifier (NPI) is 1982636353, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Amstadt, D.D.S. located?
The NPPES record lists a practice address at 1260 W Main St, Sun Prairie, WI, 53590. Phone: (608) 834-8603. Providers update this record themselves, so call before visiting.
How can I verify James Amstadt, D.D.S.'s license?
NPPES lists Wisconsin license number 2433, 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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.