Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark Mackay Lusk, DPT
Physical Therapist in New York, NY · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346511995
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Registry record
Entity type Individual (Type 1)
Name Mark Mackay Lusk
Credential DPT
Sex Male
Practice address 99 Madison Ave, 5th Fl, New York, NY, 10016
Phone (646) 430-5717
Fax (646) 514-1972
Enumeration date Jan 13, 2012
Last updated in NPPES Mar 7, 2016
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 031569 (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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Mark Lusk?
Mark Lusk is registered in NPPES with the primary taxonomy of Physical Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-07.