Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Kathleen Sharon O'Brien, PA-C
Dermatology Physician in Tucson, AZ · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447588983
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Registry record
Entity type Individual (Type 1)
Name Kathleen Sharon O'Brien
Credential PA-C
Sex Female
Practice address 7005 N. Oracle Rd, Tucson, AZ, 85704
Phone (520) 498-1818
Fax (520) 498-6499
Enumeration date Nov 20, 2009
Last updated in NPPES Nov 20, 2009
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
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 Kathleen O'Brien?
Kathleen O'Brien is registered in NPPES with the primary taxonomy of Dermatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-20.