Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

HOLLY MERSY
NPI 1164346128
Physical Therapy Assistant in San Marcos, CA

Active since August 04, 2026
1740 LA COSTA MEADOWS DR STE 250, SAN MARCOS, CA 92078(760) 516-8900 Get Directions Write a Review

NPPES record added: August 4, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Holly Mersy NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HOLLY MERSY (NPI 1164346128) is an individual physical therapy assistant in San Marcos, California, licensed in California (54993) and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1164346128
Entity TypeIndividualFemale
Primary Taxonomy225200000X
Provider Legal NameHOLLY MERSY
Location Address1740 LA COSTA MEADOWS DR STE 250San Marcos, CA 92078-2156
Mailing Address930 Anza AveVista, CA 92084-4512 · (760) 224-0982
Sole ProprietorYes
Enumeration DateAugust 4, 2026
NPPES CertifiedAugust 4, 2026
NPI 1164346128 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPhysical Therapy AssistantRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Code225200000X
License Licensed in CA · 54993
Definition
(1)Physical therapist assistants are skilled health care providers who are graduates of a physical therapist assistant associate degree program accredited by an agency recognized by the Secretary of the U.S. Department of Education or Council on Postsecondary Accreditation, who assists the physical therapist in providing physical therapy. The supervising physical therapist is directly responsible for the actions of the physical therapist assistant. The PTA performs physical therapy procedures and related tasks that have been selected and delegated by the supervising physical therapist. Duties of the PTA include assisting the physical therapist in implementing treatment programs, training patients in exercised and activities of daily living, conducting treatments, and reporting to the physical therapist on the patient's responses. In addition to direct patient care, the PTA may also perform such functions as patient transport, and clinic or equipment preparation and maintenance. Currently more than half of all states require PTAs to be licensed, registered or certified. (2) An individual who works under the supervision of a physical therapist to assist him or her in providing physical therapy services. A physical therapy assistant may, for instance, help patients follow an appropriate exercise program that will increase their strength, endurance, coordination, and range of motion and train patients to perform activities of daily life.
1740 LA COSTA MEADOWS DR STE 250, San Marcos, CA 92078

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Clinic/Center
1740 LA COSTA MEADOWS DR STE 250
SAN MARCOS, CA 92078

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Holly Mersy's NPI number?

The NPI number for Holly Mersy is 1164346128. It was assigned to this individual provider in the NPPES registry on August 4, 2026.

Where is Holly Mersy located?

Holly Mersy practices at 1740 La Costa Meadows Dr Ste 250, San Marcos, CA 92078. The listed phone number is (760) 516-8900.

What is Holly Mersy's specialty?

The primary specialty registered for this NPI is Physical Therapy Assistant with taxonomy code 225200000X.

When was this NPI record last updated?

The NPPES record for Holly Mersy was last updated on August 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.