Jon Szleszinski, D.M.D.
General Practice Dentistry · Loves Park, IL
Jon Szleszinski, D.M.D. is a general practice dentistry with a practice address in Loves Park, Illinois, and NPI 1154704849, issued on Jun 30, 2015. Check the license (Illinois 019030245, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jon Szleszinski
- Credential
- D.M.D.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 019030245 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4001 N Mulford RD, Loves Park, IL 61111
- Phone
- (815) 877-6453
- Enumerated
- Jun 30, 2015
- Record last updated
- Jun 30, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (815) 637-4295
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 5,276 in Illinois → Look up another NPI →
Also registered at 4001 N Mulford RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shalise Holt, DDS, MSOrthodontics and Dentofacial Orthopedics Dentistry1164904272
- Terry Joiner, DDSGeneral Practice Dentistry1518133362
- Vincent Zammuto, DDSGeneral Practice Dentistry1295952877
Verify Jon Szleszinski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 019030245Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average general practice dentistry in 2024
54 Medicare Part D claims for 43 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
- Amoxicillin39 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.
Jon Szleszinski among 5,276 general practice dentistry records in Illinois
Jon Szleszinski, D.M.D. is one of 5,276 general practice dentistry records with a practice address in Illinois. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 75% of them.
- NPI issued2015 · 75% of these records are older, 24% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2015 · 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 general practice dentistry records list a practice address in Loves Park
They are 18 of the 340 NPPES records with a practice address in Loves Park, and 5,276 general practice dentistry records in Illinois.
All 5,276 in Illinois → Every provider in Loves Park → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Kelli Aaby, DDSLoves Park, IL 611111508090481
- Richard Bischoff, DDSLoves Park, IL 611111407982564
- Eugene Brander, DDS, PCLoves Park, IL 611111942327358
- Mark Dargene, D.D.S.Loves Park, IL 611111528378924
- David Dimke, DMDLoves Park, IL 611111033343918
- Gerald Donnelli, DDSLoves Park, IL 611111346474228
- Phil Herlihey, D.D.S.Loves Park, IL 611111508948217
- Terry Joiner, DDSLoves Park, IL 611111518133362
Common questions
What is Jon Szleszinski, D.M.D.'s NPI number?
Jon Szleszinski, D.M.D.'s National Provider Identifier (NPI) is 1154704849, issued on Jun 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Jon Szleszinski, D.M.D. located?
The NPPES record lists a practice address at 4001 N Mulford RD, Loves Park, IL, 61111. Phone: (815) 877-6453. Providers update this record themselves, so call before visiting.
How can I verify Jon Szleszinski, D.M.D.'s license?
NPPES lists Illinois license number 019030245, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Jon Szleszinski, D.M.D. prescribe under Medicare Part D?
In 2024, Jon Szleszinski, D.M.D. had 54 Medicare Part D claims for 43 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.