Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Greg Otis Padjen
Pharmacist in Crystal Lake, IL · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1104100213
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Registry record
Entity type Individual (Type 1)
Name Greg Otis Padjen
Sex Male
Practice address 151 W Northwest Highway, Crystal Lake, IL, 60014
Phone (815) 455-2460
Fax (815) 455-1638
Enumeration date Oct 7, 2011
Last updated in NPPES Oct 7, 2011
Taxonomy & licenses
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
Where does Greg Padjen practice?
The practice location on file with NPPES is in Crystal Lake, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Greg Padjen?
The National Provider Identifier (NPI) for Greg Padjen is 1104100213, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-07.