Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Seth Crossan, CRNP
Nurse Practitioner in Newark, DE · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1336539881
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Registry record
Entity type Individual (Type 1)
Name Seth Crossan
Credential CRNP
Sex Male
Practice address 910 S Chapel St Ste 102, Newark, DE, 19713
Phone (302) 224-1400
Fax (302) 525-6706
Enumeration date Feb 4, 2015
Last updated in NPPES Nov 20, 2023
Taxonomy & licenses
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License SP014758 (PA) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AN0013774 (DE) Secondary
363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 12297 (CT) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License LG-0001274 (DE) 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 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 Seth Crossan?
Seth Crossan is registered in NPPES with the primary taxonomy of Nurse Practitioner. 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 2023-11-20.