NPI Portal NPI Lookup & Verification

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

Dr. Daniel James O'Leary, DPT

Physical Therapist in Massapequa, NY · enumerated 2013.

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

National Provider Identifier

1720414717

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Daniel James O'Leary
Credential DPT
Sex Male
Practice address Massapequa, NY, 11758
Phone (516) 541-4730
Fax (516) 541-4748
Enumeration date Sep 23, 2013
Last updated in NPPES Sep 23, 2013

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

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 036518-1 (NY) Primary
DPT · Doctor of Physical Therapy: A physical therapist holding the clinical doctorate now standard for the profession. About the DPT 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

Where does Daniel O'Leary practice?
The practice location on file with NPPES is in Massapequa, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Daniel O'Leary?
The National Provider Identifier (NPI) for Daniel O'Leary is 1720414717, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-23.