NPI Portal NPI Lookup & Verification

John Thomas Giannone, O.D.

John Thomas Giannone is a Optometrist provider (Optometrist) practicing in Morris, IL, registered in the NPPES registry with NPI 1922050707 since 2006. The credential OD stands for Doctor of Optometry.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1922050707
Entity type Individual (Type 1)
Name John Thomas Giannone
Credential O.D.
Sex Male
Practice address Morris, IL, 60450
Phone 8159425918
Fax 8159424794
Enumeration date 2006-05-17
Last updated in NPPES 2008-07-07

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
152W00000X Optometrist Primary 046-0006846 IL

OD — Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
046006846 Medicaid IL
Copy-ready billing details
Provider: John Giannone, O.D.
NPI: 1922050707
Taxonomy: 152W00000X (Optometrist)
Address: Morris, IL, 60450

Other providers at this practice address

NPI Name Type Specialty Location
1447278957 Walmart Inc. Organization Community/Retail Pharmacy Morris, IL
1073849931 Rucnok Vision Care Inc Organization Optometrist Morris, IL
1568744001 Kimberly Lim Gomez Individual Pharmacist Morris, IL
1205110921 Emmanuel Davis Individual Pharmacist Morris, IL
1992356513 Melissa Rodriguez Individual Pharmacist Morris, IL
1093315681 Vaishali Trivedi Individual Pharmacist Morris, IL

Verify this record

Cross-check NPI 1922050707 against the authoritative CMS record: view John Thomas Giannone on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is John Giannone?
John Giannone is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-07-07.