Dr. Irwin J Katz, DDS
Dr. Irwin J Katz is a Dentist provider (Dentist) practicing in Avon, CT, registered in the NPPES registry with NPI 1780717918 since 2007. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1780717918 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Irwin J Katz |
| Credential | DDS |
| Sex | Male |
| Practice address | 111 SIMSBURY RD, Avon, CT, 06001 |
| Phone | 8606781700 |
| Fax | 8606776994 |
| Enumeration date | 2007-03-14 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | 004787 | CT |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: Irwin Katz, DDS NPI: 1780717918 Taxonomy: 122300000X (Dentist) Address: 111 SIMSBURY RD, Avon, CT, 06001
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1689940744 | Mitchell S Katz DDS and Associates, PC | Organization | Dental Clinic/Center | Avon, CT |
| 1558787176 | Avon Simsbury Psychotherapy, LLC | Organization | Psychologist | Avon, CT |
| 1366890741 | Sarah Wizner Waltman | Individual | Social Worker | Avon, CT |
| 1831740828 | Joel Weisel | Individual | Clinical Social Worker | Avon, CT |
| 1467167510 | Dana Gilbert | Individual | Clinical Social Worker | Avon, CT |
| 1679273742 | Nora Hawley | Individual | Clinical Social Worker | Avon, CT |
| 1235089723 | Erin Wininger | Individual | Professional Counselor | Avon, CT |
Verify this record
Cross-check NPI 1780717918 against the authoritative CMS record: view Dr. Irwin J Katz 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.