Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Lauren Marie O'Brien, DMD
Dentist in Janesville, WI · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275157349
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Registry record
Entity type Individual (Type 1)
Name Dr. Lauren Marie O'Brien
Credential DMD
Sex Female
Practice address 1407 N Wright Rd, Janesville, WI, 53546
Phone (224) 814-4466
Enumeration date Jun 3, 2020
Last updated in NPPES Aug 5, 2025
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD 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 1275157349 active?
Yes, as of the latest NPPES snapshot, NPI 1275157349 is active (record last updated 2025-08-05).
How do I verify Lauren O'Brien's NPI record?
Cross-check NPI 1275157349 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
Browse all → James Marchigiani General Practice Dentistry · Janesville, WI NPI 1922165083 David Griffin Orthodontics and Dentofacial Orthopedics Dentistry · Janesville, WI NPI 1821138454 Wisconsin Dental Group, S.C. General Practice Dentistry · Janesville, WI NPI 1023148681 Deerwood Orthodontics, LLC Orthodontics and Dentofacial Orthopedics Dentistry · Janesville, WI NPI 1376673533 Amen Mohamed Dentist · Janesville, WI NPI 1356185367
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-05.