John G Deyoung Jr., O.D.
John G Deyoung Jr. is a Optometrist provider (Optometrist) practicing in Wheaton, IL, registered in the NPPES registry with NPI 1629140397 since 2006. The credential OD stands for Doctor of Optometry.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1629140397 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John G Deyoung Jr. |
| Credential | O.D. |
| Sex | Male |
| Practice address | 41 TOWN SQ, Wheaton, IL, 60187 |
| Phone | 6306810228 |
| Enumeration date | 2006-11-15 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 152W00000X | Optometrist | Primary | — | IL |
OD — Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential
Copy-ready billing details
Provider: John Deyoung, O.D. NPI: 1629140397 Taxonomy: 152W00000X (Optometrist) Address: 41 TOWN SQ, Wheaton, IL, 60187
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1245389337 | Bruce Uhlir | Individual | Optometrist | Wheaton, IL |
Verify this record
Cross-check NPI 1629140397 against the authoritative CMS record: view John G Deyoung Jr. 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.