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

John R Trible, MD

Individual provider Glaucoma Specialist (Ophthalmology) Physician · NPI 1104818939

John R Trible, MD is a Glaucoma Specialist (Ophthalmology) Physician in Marshalltown, Iowa. Licensed in Iowa. Registered with an NPI since 2005.

Licensed in
IA
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

309 E Church St
Marshalltown, IA 50158-2946
Phone: (641) 754-6200
Fax: (515) 223-5468
Show map & directions

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

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 32730 (IA)
Glaucoma Specialist (Ophthalmology) Physician Taxonomy 207WX0009X · Licence 32730 (IA)

Record details

NPI number1104818939
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 18, 2005
Last updated in NPPESFebruary 15, 2018
Mailing address309 E Church St, Marshalltown, IA 50158-2946