Charles Robert Kosowski, DDS
General Practice Dentistry · Greenfield, WI
Charles Robert Kosowski, DDS is a general practice dentistry with a practice address in Greenfield, Wisconsin, and NPI 1801931712, issued on Feb 20, 2007. Check the license (Wisconsin 6147-015, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Charles Robert Kosowski
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 6147-015 WI
Self-reported in NPPES; status is on the state search - Practice location
- 10707 W Beloit RD, Greenfield, WI 53228
- Phone
- (414) 258-9630
- Enumerated
- Feb 20, 2007
- Record last updated
- Feb 19, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (414) 258-1955
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 2,305 in Wisconsin → Look up another NPI →
Also registered at 10707 W Beloit RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Carini, DDSDentist1497857304
- Kirsten Farr, DMDGeneral Practice Dentistry1215662648
- Amer ShahGeneral Practice Dentistry1336746023
Verify Charles Robert Kosowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 6147-015Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average general practice dentistry in 2024
19 Medicare Part D claims for 19 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Charles Robert Kosowski among 2,305 general practice dentistry records in Wisconsin
Charles Robert Kosowski, DDS is one of 2,305 general practice dentistry records with a practice address in Wisconsin. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 43% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2008 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 general practice dentistry records list a practice address in Greenfield
They are 13 of the 961 NPPES records with a practice address in Greenfield, and 2,305 general practice dentistry records in Wisconsin.
All 2,305 in Wisconsin → Every provider in Greenfield → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Brittney Borga, DDSMilwaukee, WI 532281396186987
- Jeffrey Dean, DDSGreenfield, WI 532281104890441
- Russell Dunkel, DDSGreenfield, WI 532281811001902
- Kirsten Farr, DMDGreenfield, WI 532281215662648
- Thomas Kraklow, DDSGreenfield, WI 532281487768578
- James Landon, D.D.S.Greenfield, WI 532281194878074
- Donale Lenhardt, DDSMilwaukee, WI 532281972726461
- Glen O'Malley, D.D.S., S.C.Greenfield, WI 532281205090537
Common questions
What is Charles Robert Kosowski, DDS's NPI number?
Charles Robert Kosowski, DDS's National Provider Identifier (NPI) is 1801931712, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Charles Robert Kosowski, DDS located?
The NPPES record lists a practice address at 10707 W Beloit RD, Greenfield, WI, 53228. Phone: (414) 258-9630. Providers update this record themselves, so call before visiting.
How can I verify Charles Robert Kosowski, DDS's license?
NPPES lists Wisconsin license number 6147-015, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Charles Robert Kosowski, DDS prescribe under Medicare Part D?
In 2024, Charles Robert Kosowski, DDS had 19 Medicare Part D claims for 19 beneficiaries; the average among general practice dentistry prescribers was 83. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. 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.