Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Leonidas J Ragas , DDS

Dentist - General Practice • Itasca, IL

Active NPI 1134287733 Individual Practitioner Male Practitioner
Practice location in NPPES

421 W Irving Park Rd
Itasca, IL 601432059

Call 6307739166 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

421 W Irving Park Rd

Itasca, IL 601432059

Telephone 6307739166
Fax 6307738970
Organization at the Same NPPES Address or Phone
John A. Guerrieri D.d.s. Ltd Facility NPI 1033276654

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Industry payments (Open Payments)

No Open Payments records are listed for this clinician for 2019–2025.

Guide: How to read an Open Payments record

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Itasca and Illinois

4 active clinicians are listed under Dentist - General Practice with a practice address in Itasca, IL (5,281 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Specialties & License Numbers Reported to NPPES

Dentist - General Practice Primary Specialty

NUCC Taxonomy Code: 1223G0001X

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

1 listed
Dr. Joseph Sperlazzo , DDS

Dentist - General Practice

NPI 1376562959

Doctor of Dental Surgery

Career & Practice History

NPI enumerated December 05, 2006.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1134287733
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: December 05, 2006
Last Update: July 08, 2007
Sole Proprietor: No

Other Dentist - General Practices in Itasca

Mailing Address

421 W Irving Park Rd

Itasca, IL 601432059

Phone: 6307739166

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.