Gary Williamson, ATC
NPI 1720022361 · Athletic Trainer · Marshalltown, IA
Gary Williamson, ATC is a Athletic Trainer provider in Marshalltown, IA (NPI 1720022361).
Provider details
- NPI number
- 1720022361
- Entity type
- Individual
- Primary specialty
- Athletic TrainerRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- ATC
- Sex
- Male
- License
- 00032 (IA)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gary Williamson's NPI number?
- Gary Williamson's National Provider Identifier (NPI) is 1720022361, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Williamson's specialty?
- Gary Williamson is listed in the NPPES registry with a primary specialty of Athletic Trainer (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Gary Williamson located?
- Gary Williamson's practice location on file with NPPES is 1902 S Center St, Marshalltown, IA 50158-5945.
- What is Gary Williamson's phone number?
- The practice phone number listed in the NPPES registry for Gary Williamson is (641) 754-6120.
- Is Gary Williamson's NPI active?
- Yes — Gary Williamson's NPI (1720022361) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.