Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Katherine Levine Nickerson, P.T.

Physical Therapist in Cupertino, CA · enumerated 2009.

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

National Provider Identifier

1891023859

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Registry record

Entity type Individual (Type 1)

Name Mrs. Katherine Levine Nickerson

Credential P.T.

Sex Female

Practice address 20823 Stevens Creek Blvd, Suite #200, Cupertino, CA, 95014

Phone (408) 252-6076

Fax (408) 252-1159

Enumeration date Dec 2, 2009

Last updated in NPPES May 11, 2017

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 17070 (CA) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT 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 1891023859 active?

Yes, as of the latest NPPES snapshot, NPI 1891023859 is active (record last updated 2017-05-11).

How do I verify Katherine Nickerson's NPI record?

Cross-check NPI 1891023859 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 2017-05-11.