Dr. William Joo, DMD
Dr. William Joo is a General Practice Dentistry provider (Dentist) practicing in Rolling Meadows, IL, registered in the NPPES registry with NPI 1255904462 since 2021. The credential DMD stands for Doctor of Medicine in Dentistry. Practices at William Joo Dmd Pllc (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1255904462 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. William Joo |
| Credential | DMD |
| Sex | Male |
| Practice address | 5001 NEWPORT DR STE 100, Rolling Meadows, IL, 60008 |
| Phone | 8477492212 |
| Enumeration date | 2021-07-23 |
| Last updated in NPPES | 2025-11-18 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223G0001X | General Practice Dentistry | Primary | 019033263 | IL |
DMD — Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential
Copy-ready billing details
Provider: William Joo, DMD NPI: 1255904462 Taxonomy: 1223G0001X (General Practice Dentistry) Address: 5001 NEWPORT DR STE 100, Rolling Meadows, IL, 60008
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1992666218 | William Joo Dmd Pllc | Organization | General Practice Dentistry | Rolling Meadows, IL |
Verify this record
Cross-check NPI 1255904462 against the authoritative CMS record: view Dr. William Joo 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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Where does William Joo practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-11-18.