DR. WILLIAM HENRY GROTZ IV DDS
NPI 1720113855
Dentist - General Practice in Oak Lawn, IL

Q: What is William Grotz's NPI number?

The NPI number for William Grotz is 1720113855. It was assigned to this individual provider in the NPPES registry on February 22, 2007.

Q: What is William Grotz's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Q: When was this NPI record last updated?

The NPPES record for William Grotz was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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 February 22, 2007PECOS Enrolled

4815 W 103RD STREET, OAK LAWN, IL 60453(708) 425-5001(708) 423-0727 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 23, 2026.

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About Dr. William Henry Grotz Iv Dds NPPES

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

DR. WILLIAM HENRY GROTZ IV DDS (NPI 1720113855) is an individual general practice provider in Oak Lawn, Illinois, licensed in Illinois (1917438) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1720113855

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. WILLIAM HENRY GROTZ IVCredential: DDS

Location Address4815 W 103RD STREETOak Lawn, IL 60453

Mailing Address15100 Alpine DriveOrland Park, IL 60467-7362 · (708) 460-2303

Phone(708) 425-5001

Fax(708) 423-0727

Sole ProprietorNo

Enumeration DateFebruary 22, 2007

Last NPPES UpdateJuly 8, 2007

✔ NPI 1720113855 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in IL · 1917438

Definition

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.

4815 W 103RD STREET, Oak Lawn, IL 60453

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Henry Grotz Iv Dds is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60453 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$94.06 typical visit price

range $60.08 – $183.39

Typical copayment $23.51 (range $15.02 – $45.84)

Most-billed visit code 99203

Established Patient

$74.80 typical visit price

range $18.97 – $148.12

Typical copayment $18.70 (range $4.74 – $37.03)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 William Grotz's NPI number?

The NPI number for William Grotz is 1720113855. It was assigned to this individual provider in the NPPES registry on February 22, 2007.

Where is William Grotz located?

William Grotz practices at 4815 W 103rd Street, Oak Lawn, IL 60453. The listed phone number is (708) 425-5001.

What is William Grotz's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Is William Grotz enrolled in Medicare?

Yes. William Grotz is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Grotz was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.