John M Walkonis, DDS
John M Walkonis is a Dentist provider (Dentist) practicing in Saint Charles, MO, registered in the NPPES registry with NPI 1194762138 since 2006. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1194762138 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John M Walkonis |
| Credential | DDS |
| Sex | Male |
| Practice address | 300 1ST CAPITOL DR, Saint Charles, MO, 63301 |
| Phone | 6369475000 |
| Fax | 6369475090 |
| Enumeration date | 2006-05-31 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | 012877 | MO |
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 Walkonis, DDS NPI: 1194762138 Taxonomy: 122300000X (Dentist) Address: 300 1ST CAPITOL DR, Saint Charles, MO, 63301
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1447256649 | Barbara Holt | Individual | Certified Registered Nurse Anesthetist | Saint Charles, MO |
| 1275533747 | Intensiva Hospital of Greater St. Louis Inc | Organization | Long Term Care Hospital | Saint Charles, MO |
| 1366434896 | Christopher Hill | Individual | Internal Medicine Physician | Saint Charles, MO |
| 1568453132 | Mark Johnson | Individual | Physician Assistant | Saint Charles, MO |
| 1023009545 | Julie Roach | Individual | Certified Registered Nurse Anesthetist | Saint Charles, MO |
| 1851372023 | Brett Roach | Individual | Certified Registered Nurse Anesthetist | Saint Charles, MO |
| 1134100118 | Robert Kinder | Individual | Certified Registered Nurse Anesthetist | Saint Charles, MO |
| 1972584738 | Krishna Kanakadandila | Individual | Anesthesiology Physician | Saint Charles, MO |
Verify this record
Cross-check NPI 1194762138 against the authoritative CMS record: view John M Walkonis 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.