Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sarah Catherine Klein
Behavior Analyst in Islip, NY · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1134969512
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Registry record
Entity type Individual (Type 1)
Name Sarah Catherine Klein
Sex Female
Practice address 2330 Union Blvd, Islip, NY, 11751
Phone (631) 240-3579
Enumeration date May 31, 2024
Last updated in NPPES May 31, 2024
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 Sarah Klein?
Sarah Klein 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 → Kristi Egner Obstetrics & Gynecology Physician · Islip, NY NPI 1437118379 Lance Berlin Podiatrist · Islip, NY NPI 1942262241 Scott Berlin Obstetrics & Gynecology Physician · Islip, NY NPI 1952351439 Jung Oh Gynecology Physician · Islip, NY NPI 1093736860 Harvey Miller Allergy & Immunology Physician · Islip, NY NPI 1164507844 Mary Thomas Foot & Ankle Surgery Podiatrist · Islip, NY NPI 1760606644 Lance Berlin Dpm PC Podiatrist · Islip, NY NPI 1598943102 Bayberry Gynecology PC Obstetrics & Gynecology Physician · Islip, NY NPI 1619143880
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-31.