STEPHEN GIERCYK
NPI 1174492649
Behavior Technician in Monrovia, CA
About Stephen Giercyk NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHEN GIERCYK (NPI 1174492649) is an individual behavior technician in Monrovia, California and active in the NPI registry since November 2025.
NPPES Registry Identity
Specialties & Licenses
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Stephen Giercyk's NPI number?
The NPI number for Stephen Giercyk is 1174492649. It was assigned to this individual provider in the NPPES registry on November 3, 2025.
Where is Stephen Giercyk located?
Stephen Giercyk practices at 1333 S Mayflower Ave Suite 220, Monrovia, CA 91016. The listed phone number is (818) 241-6780.
What is Stephen Giercyk's specialty?
The primary specialty registered for this NPI is Behavior Technician with taxonomy code 106S00000X.
When was this NPI record last updated?
The NPPES record for Stephen Giercyk was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.