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

Calvin Trepp, HIS

Individual provider Hearing Instrument Specialist · NPI 1295136091

Calvin Trepp, HIS is a Hearing Instrument Specialist in Mason City, Iowa. Practices as a sole proprietor. Licensed in Iowa.

Licensed in
IA
In the registry since
2014

Practice location Address checks out

422 S Pierce Ave Ste 101
Mason City, IA 50401-2709
Phone: (641) 424-6769
Fax: (641) 424-6774
Show map & directions

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

Specialties & licences

Hearing Instrument Specialist (primary) Taxonomy 237700000X · Licence 0940 (IA)

Record details

NPI number1295136091
Entity typeIndividual (Type 1)
GenderMale
Credentials HIS
Sole proprietorYes
NPI enumeratedSeptember 11, 2014
Last updated in NPPESSeptember 11, 2014
Mailing address422 S Pierce Ave, Ste 101, Mason City, IA 50401-2709

Other providers in Mason City