John Mazzocco, DDS
Periodontics · Saint Charles, IL
John Mazzocco, DDS is a periodontics with a practice address in Saint Charles, Illinois, and NPI 1396511291, issued on Nov 30, 2023. Check the license (Illinois 019.036975, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Mazzocco
- Credential
- DDS
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 019.036975 IL
Self-reported in NPPES; status is on the state search - Practice location
- 525 Tyler RD, Saint Charles, IL 60174
- Phone
- (630) 377-4677
- Enumerated
- Nov 30, 2023
- Record last updated
- Jul 27, 2026
- Entity
- Type 1 · individual
8 nearest periodontics records → All 214 in Illinois → Look up another NPI →
Also registered at 525 Tyler RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Mazzocco in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 019.036975Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average periodontics in 2024
14 Medicare Part D claims, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
John Mazzocco among 214 periodontics records in Illinois
John Mazzocco, DDS is one of 214 periodontics records with a practice address in Illinois. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 99% of them.
- NPI issued2023 · 99% of these records are older, under 1% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2026 · 72% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in Illinois
There are 214 periodontics records in Illinois.
All 214 in Illinois → Every provider in Saint Charles → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Tricia Crosby, DDS,MSSt Charles, IL 601741912152034
- Martin Kolinski, DDSSt Charles, IL 601741083705701
- Henry Crossetti, DDS MSSchaumburg, IL 601731023231669
- Jennifer Silc, DDS, MSSchaumburg, IL 601731184766263
- Paul Blaha, DDS MSSycamore, IL 601781124134283
- George Mandelaris, DDSOakbrook Terrace, IL 601811356568513
- Alan Rosenfeld, DDS, FACDOakbrook Terrace, IL 601811255437760
- John Saniat, D.D.S.Wheaton, IL 601871073687927
Common questions
What is John Mazzocco, DDS's NPI number?
John Mazzocco, DDS's National Provider Identifier (NPI) is 1396511291, issued on Nov 30, 2023. An NPI identifies a provider in billing; it is not a license.
Where is John Mazzocco, DDS located?
The NPPES record lists a practice address at 525 Tyler RD, Saint Charles, IL, 60174. Phone: (630) 377-4677. Providers update this record themselves, so call before visiting.
How can I verify John Mazzocco, DDS's license?
NPPES lists Illinois license number 019.036975, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does John Mazzocco, DDS prescribe under Medicare Part D?
In 2024, John Mazzocco, DDS had 14 Medicare Part D claims; the average among periodontics prescribers was 277. 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.