NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Altherr

Behavior Analyst in Sumter, SC · enumerated 2009.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1386971513

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Margaret Altherr
Sex Female
Practice address 2580 Lin Do Ct, Sumter, SC, 29150
Phone (803) 905-4427
Fax (803) 905-4431
Enumeration date Nov 9, 2009
Last updated in NPPES Nov 9, 2009

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Margaret Altherr practice?
The practice location on file with NPPES is in Sumter, SC. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Margaret Altherr?
The National Provider Identifier (NPI) for Margaret Altherr is 1386971513, 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 2009-11-09.