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

Dr. Robert Mark Stewart, MD

Individual provider Internal Medicine Physician · NPI 1124104609

Dr. Robert Mark Stewart, MD is an Internal Medicine Physician in Sioux City, Iowa. Licensed in Iowa. Registered with an NPI since 2006.

Licensed in
IA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2730 Pierce St Ste 401
Sioux City, IA 51104-3796
Phone: (712) 255-8827
Fax: (712) 255-4862
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 20182 (IA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 20182 (IA)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 20182 (IA)

Record details

NPI number1124104609
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 27, 2006
Last updated in NPPESAugust 11, 2009
Mailing address2730 Pierce St, Suite 401, Sioux City, IA 51104-3796

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