Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Aaron Madison Duffy, D.D.S.
Dentist in Roseville, CA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1043686074
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Registry record
Entity type Individual (Type 1)
Name Dr. Aaron Madison Duffy
Credential D.D.S.
Sex Male
Practice address 8630 Sierra College Blvd, Ste. 110, Roseville, CA, 95661
Phone (916) 783-0244
Enumeration date Aug 13, 2015
Last updated in NPPES Aug 13, 2015
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
What specialty is Aaron Duffy?
Aaron Duffy 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.
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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-08-13.