Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GARY WILLIAMSON ATC
NPI 1720022361
Specialist/Technologist - Athletic Trainer in Marshalltown, IA

Q: What is Gary Williamson's NPI number?

The NPI number for Gary Williamson is 1720022361. It was assigned to this individual provider in the NPPES registry on June 15, 2006.

Q: What is Gary Williamson's specialty?

The primary specialty registered for this NPI is Specialist/Technologist, specializing in Athletic Trainer, with taxonomy code 2255A2300X.

Q: When was this NPI record last updated?

The NPPES record for Gary Williamson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 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.

Active since June 15, 2006

1902 S CENTER ST, MARSHALLTOWN, IA 50158(641) 754-6120 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Gary Williamson Atc NPPES

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

GARY WILLIAMSON ATC (NPI 1720022361) is an individual athletic trainer provider in Marshalltown, Iowa, licensed in Iowa (00032) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1720022361

Entity TypeIndividualMale

Primary Taxonomy2255A2300X

Provider Legal NameGARY WILLIAMSONCredential: ATC

Location Address1902 S CENTER STMarshalltown, IA 50158-5945

Mailing Address804 S 14th Ave WNewton, IA 50208-5228

Phone(641) 754-6120

Sole ProprietorNo

Enumeration DateJune 15, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1720022361 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialist/Technologist · Athletic TrainerRespiratory, Developmental, Rehabilitative and Restorative Service Providers

Taxonomy Code2255A2300X

License✔ Licensed in IA · 00032

Definition

Athletic trainers are allied health care professionals who work in consultation with or under the direction of physicians, and specialize in the prevention, assessment, treatment and rehabilitation of injuries and illnesses. Currently, the entry-level employment requirements are a bachelor's degree with a major in athletic training from an accredited university or college. A majority of athletic trainers hold advanced degrees. National board certification is generally required as a condition of state licensure and employment. Most states regulate athletic trainers, and they practice within the scope of that license or regulation. Clinical practice includes emergency care, rehabilitation, reconditioning, therapeutic exercise, wellness programs, exercise physiology, kinesiology, biomechanics, nutrition, psychology and health care administration.

1902 S CENTER ST, Marshalltown, IA 50158

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Other Providers at the Same Location NPPES 13

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

SAMIR MALEKI PT, DPT

Physical Therapist