Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Deirdre F Hartnett, APN-CNP
Nurse Practitioner in Palatine, IL · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639547672
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Registry record
Entity type Individual (Type 1)
Name Ms. Deirdre F Hartnett
Credential APN-CNP
Sex Female
Practice address 500 N Hicks Rd, Palatine, IL, 60067
Phone (630) 646-1200
Enumeration date Sep 8, 2015
Last updated in NPPES Sep 28, 2026
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209012753 (IL) Primary
363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209.012753 (IL) Secondary
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 is the NPI number for Deirdre Hartnett?
The National Provider Identifier (NPI) for Deirdre Hartnett is 1639547672, a Type 1 (individual) record in the CMS NPPES registry.
Where does Deirdre Hartnett practice?
The practice location on file with NPPES is in Palatine, IL. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-09-28.