DR. LEONARD S. PIAZZA (M.D.) – Otolaryngology Physician, NPI 1083633663

DR. LEONARD S. PIAZZA (M.D.) is a healthcare provider. based in Naperville, Illinois. specializing in OTOLARYNGOLOGY. They hold the professional credentials M.D.. The NPI Number for DR. LEONARD S. PIAZZA (M.D.) is 1083633663

Main info

Male
44 Years Of Experience
Accepts Medicare Assignment
Name
DR. LEONARD S. PIAZZA (M.D.)
NPI
1083633663
Phone
(630) 355-5668
Address
10 W MARTIN AVE STE 260
Enumeration Date
18 July 2006
Last Update Date
21 July 2022

Doctor Profile

Medical School Name
R FRANKLIN UNIVERSITY OF MED & SCI/CHICAGO MEDICAL SCHOOL
Secondary Phone
-
Graduation Year
1982 (44 years ago)
PAC ID
3173558889
Group Practice PAC ID
2163334699
Professional Enrollment ID
I20100925000162
Address ID
IL602011700EV2650XAVEX300
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience43
Completeness75
Years active:19State licenses:0Digital endpointsOther names

488 OTOLARYNGOLOGY in IL

Provider Addresses for DR. LEONARD S. PIAZZA (M.D.)

  • 10 W MARTIN AVE STE 260

    NAPERVILLE, IL 605406547

    Phone: (630) 355-5668

    Fax: (630) 355-2071

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 5 Open Payments records for all available years, with a total value of $229.

Total Amount is formed as General ($229) + Research ($0) + Ownership ($0) = $229.

Last reported payment date: 2024-09-18 • Largest payer in this snapshot: Inspire Medical Systems, Inc. ($126).

Total Amount

$229

General + Research + Ownership

Payments

5

Total payment records

General Amount

$229

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-09-18

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2010-09-25

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20100925000162IOtolaryngologyILTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99214Established patient office or other outpatient visit, 30-39 minutes520380$0
92504Exam of ear using a microscope228183$0
99204New patient office or other outpatient visit, 45-59 minutes161161$0
31575Diagnostic exam of voice box using a flexible endoscope7163$0
77011Ct guidance for needle or tube localization5448$0
View full utilization report →

Insurance plans in this area (ZIP 60540)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 2163334699View full group profile
NameSpecialtyState
-IL
E N D O C R I N O L O G YIL
N E U R O L O G YIL
Hospitalist, Internal MedicineIL
O P H T H A L M O L O G YIL
-IL
E N D O C R I N O L O G YIL
Cardiovascular Disease (Cardiology), Interventional CardiologyIL
Clinical Social WorkerIL
Certified Nurse Midwife (Cnm)IL

Reviews

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Frequently asked questions

How is DR. LEONARD S. PIAZZA (M.D.) identified in CMS data?
CMS-hosted NPPES data lists DR. LEONARD S. PIAZZA (M.D.) with NPI 1083633663.
Is DR. LEONARD S. PIAZZA (M.D.) listed as active for patients and plans?
The listing shows DR. LEONARD S. PIAZZA (M.D.) as active in the NPI system.
What is DR. LEONARD S. PIAZZA (M.D.)'s specialty?
The listing groups DR. LEONARD S. PIAZZA (M.D.) with Otolaryngology Physician. Clinical services aligned with this taxonomy classification.
Where is DR. LEONARD S. PIAZZA (M.D.) based?
DR. LEONARD S. PIAZZA (M.D.) is tied to Naperville, Illinois in the data we show; additional addresses may exist on the full record.
What does 'Individual Provider' mean on this profile?
Entity type tells you whether the number belongs to a person or an organization.

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