Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Deborah J Holbrook, RN
Registered Nurse in Syosset, NY · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1851668560
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Registry record
Entity type Individual (Type 1)
Name Deborah J Holbrook
Credential RN
Sex Female
Practice address 239 Cold Spring Rd, Syosset, NY, 11791
Phone (516) 622-5668
Fax (516) 364-6947
Enumeration date Nov 23, 2011
Last updated in NPPES Dec 20, 2011
Taxonomy & licenses
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam.
About the RN credential
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 Deborah Holbrook?
Deborah Holbrook is registered in NPPES with the primary taxonomy of Registered Nurse. 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-20.