Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Irwin J Katz, DDS
Dentist in Avon, CT · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1780717918
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Registry record
Entity type Individual (Type 1)
Name Dr. Irwin J Katz
Credential DDS
Sex Male
Practice address 111 Simsbury Rd, Avon, CT, 06001
Phone (860) 678-1700
Fax (860) 677-6994
Enumeration date Mar 14, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees.
About the DDS credential
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.
Frequently asked questions
What is the NPI number for Irwin Katz?
The National Provider Identifier (NPI) for Irwin Katz is 1780717918, a Type 1 (individual) record in the CMS NPPES registry.
Where does Irwin Katz practice?
The practice location on file with NPPES is in Avon, CT. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Mitchell S Katz DDS and Associates, PC Dental Clinic/Center · Avon, CT NPI 1689940744 Avon Simsbury Psychotherapy, LLC Psychologist · Avon, CT NPI 1558787176 Sarah Wizner Waltman Social Worker · Avon, CT NPI 1366890741 Joel Weisel Clinical Social Worker · Avon, CT NPI 1831740828 Dana Gilbert Clinical Social Worker · Avon, CT NPI 1467167510 Nora Hawley Clinical Social Worker · Avon, CT NPI 1679273742 Erin Wininger Professional Counselor · Avon, CT NPI 1235089723
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.