Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Otto Sievens
Social Worker in Gurnee, IL · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1730656489
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Registry record
Entity type Individual (Type 1)
Name Otto Sievens
Sex Male
Practice address 1790 Nations Dr, Gurnee, IL, 60031
Phone (847) 204-3587
Enumeration date Oct 31, 2018
Last updated in NPPES Oct 31, 2018
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 Otto Sievens practice?
The practice location on file with NPPES is in Gurnee, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Otto Sievens?
The National Provider Identifier (NPI) for Otto Sievens is 1730656489, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Michael Cavanaugh Specialist · Gurnee, IL NPI 1407858376 Parthiv Shah Specialist · Gurnee, IL NPI 1053313775 Jane Luecking Family Medicine Physician · Gurnee, IL NPI 1407848617 Julie Shapiro Family Medicine Physician · Gurnee, IL NPI 1982696191 Desmond Mcdonagh Vascular Surgery Physician · Gurnee, IL NPI 1699734186 Waukegan Hospice, LLC Community Based Hospice Care Agency · Gurnee, IL NPI 1477505139 North Shore Allergy and Asthma, S.C. Specialist · Gurnee, IL NPI 1467567156 Eye Care 4 U, S.C. Optometrist · Gurnee, IL NPI 1225193931
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-31.