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

Robert Steven Grittmann, DO

Individual provider Internal Medicine Physician · NPI 1689707291

Robert Steven Grittmann, DO is an Internal Medicine Physician in Waterloo, Iowa. Practices as a sole proprietor. Licensed in Iowa.

Licensed in
IA
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

2055 Kimball Ave Ste 320
Waterloo, IA 50702-5014
Phone: (319) 272-2340
Fax: (319) 272-2347
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2031 (IA)

Record details

NPI number1689707291
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedMarch 13, 2007
Last updated in NPPESJuly 27, 2010

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