Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Dianne Thomas, R.N.
Registered Nurse in Ossining, NY · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1356685945
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Registry record
Entity type Individual (Type 1)
Name Ms. Dianne Thomas
Credential R.N.
Sex Female
Practice address 190 Croton Ave, Ossining, NY, 10562
Phone (914) 762-2682
Fax (914) 941-5341
Enumeration date Nov 20, 2012
Last updated in NPPES Nov 20, 2012
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
Where does Dianne Thomas practice?
The practice location on file with NPPES is in Ossining, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Dianne Thomas?
The National Provider Identifier (NPI) for Dianne Thomas is 1356685945, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-20.