Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. James Skylar O'Brien, DDS
Dentist in Dekalb, IL · enumerated 2024.
Data current as of Jul 11, 2026 · sourced from CMS NPPES
National Provider Identifier
1447093729
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Registry record
Entity type Individual (Type 1)
Name Dr. James Skylar O'Brien
Credential DDS
Sex Male
Practice address 2442 Sycamore Rd, Dekalb, IL, 60115
Phone (815) 748-2666
Enumeration date Jun 14, 2024
Last updated in NPPES Jun 14, 2024
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
Where does James O'Brien practice?
The practice location on file with NPPES is in Dekalb, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for James O'Brien?
The National Provider Identifier (NPI) for James O'Brien is 1447093729, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Dekamore Dental P.C. General Practice Dentistry · Delkalb, IL NPI 1730408741 Mehrdad Babalooee General Practice Dentistry · Dekalb, IL NPI 1770220881 Riya Shah Dentist · Dekalb, IL NPI 1659157170 James Skylar O'Brien, DDS, LLC Dentist · Dekalb, IL NPI 1811730195 Omar Ragab General Practice Dentistry · Dekalb, IL NPI 1760377824 Omar Albayati General Practice Dentistry · Dekalb, IL NPI 1083501100 Faaiza Bhatti General Practice Dentistry · Dekalb, IL NPI 1083506604
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2024-06-14.