Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

William R Closs III, LAT, ATC, CSCS

Individual provider Athletic Trainer · NPI 1386484582

William R Closs III, LAT, ATC, CSCS is an Athletic Trainer in Nashua, New Hampshire. Licensed in Massachusetts and New Hampshire. Registered with an NPI since 2024.

Licensed in
MA, NH
In the registry since
2024
Specialties on file
2
What do these letters mean?
LAT — Licensed Athletic Trainer
A state-licensed athletic trainer.
ATC — Certified Athletic Trainer
Prevents and treats sport and activity injuries.

See every abbreviation used in this directory →

Practice location Address checks out

436 Amherst St Ste 102
Nashua, NH 03063-1276
Phone: (603) 417-5087
Fax: (603) 417-5089
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Athletic Trainer (primary) Taxonomy 2255A2300X · Licence 0396 (NH)
Athletic Trainer Taxonomy 2255A2300X · Licence ATL3290 (MA)

Record details

NPI number1386484582
Entity typeIndividual (Type 1)
GenderMale
Credentials LAT , ATC , CSCS
Sole proprietorNo
NPI enumeratedMay 28, 2024
Last updated in NPPESMay 28, 2024
Certification dateMay 28, 2024

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