Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Nancy Augusta Lowenstein, OTR-L

Occupational Therapist in Lexington, MA · enumerated 2007.

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

National Provider Identifier

1225177819

Verified

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Registry record

Entity type Individual (Type 1)

Name Ms. Nancy Augusta Lowenstein

Credential OTR-L

Sex Female

Practice address Lexington, MA, 02420

Phone (781) 860-7288

Fax (781) 861-3430

Enumeration date Feb 6, 2007

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 1890 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
OT0058	Other	MA	OCCUPATIONAL THERAPY
0393959	Medicaid	MA	-

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 Nancy Lowenstein practice?

The practice location on file with NPPES is in Lexington, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Nancy Lowenstein?

The National Provider Identifier (NPI) for Nancy Lowenstein is 1225177819, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.