Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Mary Ericson Waller, OT

Occupational Therapist in West Columbia, SC · enumerated 2012.

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

National Provider Identifier

1649523457

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Registry record

Entity type Individual (Type 1)

Name Mrs. Mary Ericson Waller

Credential OT

Sex Female

Practice address 2720 Sunset Blvd, West Columbia, SC, 29169

Phone (803) 791-2000

Enumeration date Oct 17, 2012

Last updated in NPPES Oct 17, 2012

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 640 (SC) Primary

OT · Occupational Therapist: A licensed therapist helping patients develop or recover skills for daily living and working. About the OT 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1649523457 active?

Yes, as of the latest NPPES snapshot, NPI 1649523457 is active (record last updated 2012-10-17).

How do I verify Mary Waller's NPI record?

Cross-check NPI 1649523457 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-17.