Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Elizabeth Maureen Callahan, NURSE PRACTITIONER
Nurse Practitioner in Princeton, NJ · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841924271
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Registry record
Entity type Individual (Type 1)
Name Elizabeth Maureen Callahan
Credential NURSE PRACTITIONER
Sex Female
Practice address 3626 Route 1, Princeton, NJ, 08540
Phone (609) 945-3611
Enumeration date Jul 12, 2022
Last updated in NPPES Jul 12, 2022
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 26NJ01336800 (NJ) Primary
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 NPI 1841924271 active?
Yes, as of the latest NPPES snapshot, NPI 1841924271 is active (record last updated 2022-07-12).
How do I verify Elizabeth Callahan's NPI record?
Cross-check NPI 1841924271 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-12.