Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JOHN MAZZOCCO DDS
NPI 1396511291
Dentist - Periodontics in Saint Charles, IL

Q: What is John Mazzocco's NPI number?

The NPI number for John Mazzocco is 1396511291. It was assigned to this individual provider in the NPPES registry on November 30, 2023.

Q: What is John Mazzocco's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Periodontics, with taxonomy code 1223P0300X.

Q: When was this NPI record last updated?

The NPPES record for John Mazzocco was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 30, 2023

525 TYLER RD, SAINT CHARLES, IL 60174(630) 377-4677 Get Directions Write a Review

NPPES record last updated: July 27, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About John Mazzocco Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN MAZZOCCO DDS (NPI 1396511291) is an individual periodontics provider in Saint Charles, Illinois, licensed in Illinois (019.036975) and active in the NPI registry since November 2023.

NPPES Registry Identity

NPI1396511291

Entity TypeIndividualMale

Primary Taxonomy1223P0300X

Provider Legal NameJOHN MAZZOCCOCredential: DDS

Location Address525 TYLER RDSaint Charles, IL 60174-3305

Mailing Address525 Tyler RdSaint Charles, IL 60174-3305 · (630) 362-2986

Phone(630) 377-4677

Sole ProprietorYes

Enumeration DateNovember 30, 2023

Last NPPES UpdateJuly 27, 2026

NPPES CertifiedJuly 27, 2026

✔ NPI 1396511291 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · PeriodonticsDental Providers

Taxonomy Code1223P0300X

License✔ Licensed in IL · 019.036975

Definition

That specialty of dentistry which encompasses the prevention, diagnosis and treatment of diseases of the supporting and surrounding tissues of the teeth or their substitutes and the maintenance of the health, function and esthetics of these structures and tissues.

525 TYLER RD, Saint Charles, IL 60174

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROBERT WAYNE LONG D.O.

Family Medicine

525 TYLER RD
ST CHARLES, IL 60174

Kane County (630) 584-2070

TIMOTHY W. SHEEHAN,LTD.

Dentist (General Practice)

525 TYLER RD
ST CHARLES, IL 60174

Kane County (630) 584-8444

DR. TIMOTHY WILLIAM SHEEHAN D.D.S.

Dentist (General Practice)

525 TYLER RD, SUITE K
SAINT CHARLES, IL 60174

Kane County (630) 584-8444

BRENT C HUFF LAT

Specialist/Technologist (Athletic Trainer)

525 TYLER RD, SUITE J
ST CHARLES, IL 60174

Kane County (630) 584-2070

DR. WILLIAM ERIC HESTRUP D.C.

Chiropractor

525 TYLER RD, SUITE A
SAINT CHARLES, IL 60174

Kane County (630) 377-3202

MR. SHERYAR MASUD D.C.

Chiropractor

525 TYLER RD, UNIT R-1
ST CHARLES, IL 60174

Kane County (630) 443-4411

DR. LEWIS DONALD BLEVINS II DC

Chiropractor

525 TYLER RD, SUITE A
ST CHARLES, IL 60174

Kane County (630) 524-2445

DR. ERIC WALTER HESTRUP D.C.

Chiropractor

525 TYLER RD, SUITE A
ST CHARLES, IL 60174

Kane County (630) 524-2445

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Mazzocco's NPI number?

The NPI number for John Mazzocco is 1396511291. It was assigned to this individual provider in the NPPES registry on November 30, 2023.

Where is John Mazzocco located?

John Mazzocco practices at 525 Tyler Rd, Saint Charles, IL 60174. The listed phone number is (630) 377-4677.

What is John Mazzocco's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Periodontics, with taxonomy code 1223P0300X.

When was this NPI record last updated?

The NPPES record for John Mazzocco was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.