Dr. John E Parzakonis, DDS
Dr. John E Parzakonis is a Dentist provider (Dentist) practicing in Glenview, IL, registered in the NPPES registry with NPI 1225156433 since 2007. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1225156433 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. John E Parzakonis |
| Credential | DDS |
| Sex | Male |
| Practice address | Glenview, IL, 60025 |
| Phone | 8477295880 |
| Fax | 8477293459 |
| Enumeration date | 2007-03-26 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | — | IL |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: John Parzakonis, DDS NPI: 1225156433 Taxonomy: 122300000X (Dentist) Address: Glenview, IL, 60025
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1083602379 | Dr Ron Riegelhaupt | Organization | Foot & Ankle Surgery Podiatrist | Glenview, IL |
| 1710091673 | Colonial Dental Group | Organization | General Practice Dentistry | Glenview, IL |
| 1346303559 | Kenneth Bueltmann | Individual | Periodontics | Glenview, IL |
| 1366505570 | Associated Periodontists,Ltd. | Organization | Periodontics | Glenview, IL |
| 1790803757 | Matthew Davis | Individual | Dentist | Glenview, IL |
| 1013035773 | Martin Rogers | Individual | Endodontics | Glenview, IL |
| 1992910392 | Best Endodontics of Glenview, Ltd | Organization | Endodontics | Glenview, IL |
| 1821203548 | Ronald Riegelhaupt | Individual | Foot & Ankle Surgery Podiatrist | Glenview, IL |
Verify this record
Cross-check NPI 1225156433 against the authoritative CMS record: view Dr. John E Parzakonis 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.