Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Hollie Duonnolo
Psychologist in Willow Grove, PA · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750262473
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Registry record
Entity type Individual (Type 1)
Name Hollie Duonnolo
Sex Female
Practice address 630 Fitzwatertown Rd Ste A1, Willow Grove, PA, 19090
Phone (267) 859-2161
Enumeration date Sep 9, 2025
Last updated in NPPES Oct 6, 2026
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 Hollie Duonnolo?
Hollie Duonnolo is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-10-06.