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

Dr. John Mark Koester, DO

Individual provider Emergency Medicine Physician · NPI 1811978646

Dr. John Mark Koester, DO is an Emergency Medicine Physician in Des Moines, Iowa. Works from 2 locations. Licensed in Iowa.

Licensed in
IA
In the registry since
2005
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

1200 Pleasant St
Des Moines, IA 50309-1406
Phone: (515) 241-6212
Show map & directions

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

Additional practice locations (1)

  • 3600 30th St, Des Moines, IA 50310-5876 — (515) 699-5999

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 02137 (IA)

Record details

NPI number1811978646
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedNovember 9, 2005
Last updated in NPPESMay 26, 2020
Certification dateMay 26, 2020
Mailing address3497 Ne 78th Ave, Ankeny, IA 50021-9377

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