Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Killeen Elizabeth Marzella
Behavior Analyst in Westfield, NJ · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689230146
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Registry record
Entity type Individual (Type 1)
Name Killeen Elizabeth Marzella
Sex Female
Practice address 560 Springfield Ave, Westfield, NJ, 07090
Phone (908) 233-0100
Enumeration date May 10, 2019
Last updated in NPPES May 10, 2019
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
What specialty is Killeen Marzella?
Killeen Marzella is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → Susan Simon Internal Medicine Physician · Westfield, NJ NPI 1093704777 Eunhee Shih Pediatrics Physician · Westfield, NJ NPI 1972562700 Nicholas Yatrakis Internal Medicine Physician · Westfield, NJ NPI 1316993876 Daniel Hermann Pediatrics Physician · Westfield, NJ NPI 1902845746 Michael Cavalla Chiropractor · Westfield, NJ NPI 1477603637 Hilda Cavalla Acupuncturist · Westfield, NJ NPI 1609082858 Nicole Garcia Pediatrics Physician · Westfield, NJ NPI 1124293865 Laurie Belosa Pediatrics Physician · Westfield, NJ NPI 1992026694
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-10.