Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Mary Etta Castles Able
Behavior Analyst in Columbia, SC · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689298531
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Registry record
Entity type Individual (Type 1)
Name Mrs. Mary Etta Castles Able
Sex Female
Practice address 2805 Millwood Ave, Columbia, SC, 29205
Phone (803) 234-8596
Enumeration date Jun 5, 2020
Last updated in NPPES Jun 1, 2022
Taxonomy & licenses
103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-18-30002 (SC) Primary
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 Mary Able practice?
The practice location on file with NPPES is in Columbia, SC. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Able?
The National Provider Identifier (NPI) for Mary Able is 1689298531, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-01.