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

Gregory T Olson, DO

Individual provider Family Medicine Physician · NPI 1174841795

Gregory T Olson, DO is a Family Medicine Physician in Sioux City, Iowa. Licensed in Iowa. Registered with an NPI since 2010.

Licensed in
IA
In the registry since
2010
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

4545 Sergeant Rd
Sioux City, IA 51106-4706
Phone: (712) 274-2400
Fax: (712) 274-1487
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 4203 (IA)

Record details

NPI number1174841795
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 6, 2010
Last updated in NPPESNovember 21, 2014
Mailing address814 Pierce St, Ste 300, Sioux City, IA 51101-1058

Other providers in Sioux City