Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Konstantinos Proussaefs, D.D.S.
Dentist in Simi Valley, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1326237595
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Registry record
Entity type Individual (Type 1)
Name Dr. Konstantinos Proussaefs
Credential D.D.S.
Sex Male
Practice address 1445 E Los Angeles Ave, Suite 300, Simi Valley, CA, 93065
Phone (805) 582-0785
Fax (805) 582-0785
Enumeration date Oct 23, 2007
Last updated in NPPES Oct 23, 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
Is NPI 1326237595 active?
Yes, as of the latest NPPES snapshot, NPI 1326237595 is active (record last updated 2007-10-23).
How do I verify Konstantinos Proussaefs's NPI record?
Cross-check NPI 1326237595 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-23.