Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Sara Hanahan, DMD
Dentist in Alton, IL · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1740703149
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Registry record
Entity type Individual (Type 1)
Name Dr. Sara Hanahan
Credential DMD
Sex Female
Practice address 4119 Humbert Rd, Alton, IL, 62002
Phone (618) 465-8100
Enumeration date Jul 18, 2017
Last updated in NPPES Jul 18, 2017
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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Sara Hanahan?
Sara Hanahan is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Terry Ortman General Practice Dentistry · Alton, IL NPI 1316004310 Timothy Pranger General Practice Dentistry · Alton, IL NPI 1831256817 Humbert Road Dentistry Dentist · Alton, IL NPI 1942501911 Jonathan Smiley General Practice Dentistry · Alton, IL NPI 1407298110 Moody Hanahan Dentistry LLC Dental Clinic/Center · Alton, IL NPI 1528693926
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-07-18.