Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Katherine Derenthal Davis, DPT
Physical Therapist in Smithtown, NY · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1144978958
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Katherine Derenthal Davis
Credential DPT
Sex Female
Practice address 59 Landing Ave, Smithtown, NY, 11787
Phone (631) 361-5111
Enumeration date Mar 11, 2022
Last updated in NPPES Mar 15, 2022
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 048410 (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
How do I verify Katherine Davis's NPI record?
Cross-check NPI 1144978958 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1144978958 active?
Yes, as of the latest NPPES snapshot, NPI 1144978958 is active (record last updated 2022-03-15).
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-15.