Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Denise Handrahan Leathem, OT

Occupational Therapist in Millsboro, DE · enumerated 2006.

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

National Provider Identifier

1518914423

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Registry record

Entity type Individual (Type 1)

Name Denise Handrahan Leathem

Credential OT

Sex Female

Practice address Route 24 & 299 Back Bay Farm Rd, Millsboro, DE, 19966

Phone (302) 947-9662

Fax (302) 947-9692

Enumeration date May 27, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License U10000680 (DE) Primary

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

Other identifiers

Identifier	Type	State	Issuer
P00147214	Other	DE	RAILROAD MEDICARE

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 Denise Leathem practice?

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

What is the NPI number for Denise Leathem?

The National Provider Identifier (NPI) for Denise Leathem is 1518914423, 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.