Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Deborah A Hassler, NP
Nurse Practitioner in Newark, DE · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1245297324
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Registry record
Entity type Individual (Type 1)
Name Ms. Deborah A Hassler
Credential NP
Sex Female
Practice address 4755 Ogletown Stanton Rd, Dept. of Surgery, Christiana Hospital, Newark, DE, 19718
Phone (302) 733-4280
Enumeration date May 1, 2006
Last updated in NPPES Jan 8, 2010
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R00044284 (SC) Secondary
363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License LZ-0000116 (DE) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License LZ-0000116 (DE) Primary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority.
About the NP credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| NP0318 | Medicaid | SC | - |
| 500006818 | Other | SC | RAIL ROAD MEDICARE |
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 Deborah Hassler?
The National Provider Identifier (NPI) for Deborah Hassler is 1245297324, a Type 1 (individual) record in the CMS NPPES registry.
Where does Deborah Hassler practice?
The practice location on file with NPPES is in Newark, DE. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Erik Marshall Cardiovascular Disease Physician · Newark, DE NPI 1144223850 Cynthia Flynn Anatomic Pathology & Clinical Pathology Physician · Newark, DE NPI 1336145861 Mary Iacocca Anatomic Pathology & Clinical Pathology Physician · Newark, DE NPI 1689670119 Michael Kanzer Anatomic Pathology & Clinical Pathology Physician · Newark, DE NPI 1194721639 Gary Witkin Anatomic Pathology & Clinical Pathology Physician · Newark, DE NPI 1396741849 Mark Mitchell Anatomic Pathology & Clinical Pathology Physician · Newark, DE NPI 1487650594 William Kirby Anatomic Pathology & Clinical Pathology Physician · Newark, DE NPI 1265438360 Rebecca Yourinson Physician Assistant · Newark, DE NPI 1104825579
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-08.