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

Mr. Glen William Trefry, ATP

Individual provider Other Specialist/Technologist · NPI 1730226150

Mr. Glen William Trefry, ATP is an Other Specialist/Technologist in Upland, California. Practices as a sole proprietor. Registered with an NPI since 2007.

In the registry since
2007

Practice location Address checks out

929 E Foothill Blvd 103
Upland, CA 91786-4037
Phone: (909) 224-9095
Fax: (909) 985-9895
Show map & directions

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

Specialties & licences

Other Specialist/Technologist (primary) Taxonomy 246Z00000X

Record details

NPI number1730226150
Entity typeIndividual (Type 1)
GenderMale
Credentials ATP
Sole proprietorYes
NPI enumeratedFebruary 1, 2007
Last updated in NPPESJuly 8, 2007