Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Sara Williams, MA, OTR L

Occupational Therapist in Minneapolis, MN · enumerated 2006.

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

National Provider Identifier

1508925751

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Registry record

Entity type Individual (Type 1)

Name Mary Sara Williams

Credential MA, OTR L

Sex Female

Practice address 1800 2nd St Ne, Minneapolis, MN, 55418

Phone (612) 789-1236

Enumeration date Dec 6, 2006

Last updated in NPPES Dec 22, 2010

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 4494 (WI) Secondary

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 103361 (MN) Primary

Other identifiers

Identifier	Type	State	Issuer
391584408	Other	-	TRICARE
41041200	Medicaid	WI	-
HP70878	Other	-	HEALTH PARTNERS
167861	Other	-	AETNA
6406809	Other	-	MEDICA
434L1WI	Other	MN	BCBS MN
641671046996	Other	-	PREFERRED ONE

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 1508925751 active?

Yes, as of the latest NPPES snapshot, NPI 1508925751 is active (record last updated 2010-12-22).

How do I verify Mary Williams's NPI record?

Cross-check NPI 1508925751 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 2010-12-22.