Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Diane Castle
Social Worker in Montgomery, TX · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1881564441
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Registry record
Entity type Individual (Type 1)
Name Diane Castle
Sex Female
Practice address 15677 Crown Oaks Dr, Montgomery, TX, 77316
Phone (810) 835-5406
Enumeration date Nov 10, 2025
Last updated in NPPES Nov 10, 2025
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
Where does Diane Castle practice?
The practice location on file with NPPES is in Montgomery, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diane Castle?
The National Provider Identifier (NPI) for Diane Castle is 1881564441, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-10.