NPI Portal NPI Lookup & Verification

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

Kathleen M. Sison, OT

Case Manager/Care Coordinator in Milwaukee, WI · enumerated 2008.

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

National Provider Identifier

1437336930

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Kathleen M. Sison
Credential OT
Sex Female
Practice address Milwaukee, WI, 53218
Phone (414) 463-8777
Fax (414) 463-1668
Enumeration date Jan 28, 2008
Last updated in NPPES Jan 28, 2008

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

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other Service Providers 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

What is the NPI number for Kathleen Sison?
The National Provider Identifier (NPI) for Kathleen Sison is 1437336930, a Type 1 (individual) record in the CMS NPPES registry.
Where does Kathleen Sison practice?
The practice location on file with NPPES is in Milwaukee, WI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-28.