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

Benjamin Clarence Aaker, MD

Individual provider Emergency Medicine Physician · NPI 1811198278

Benjamin Clarence Aaker, MD is an Emergency Medicine in Yankton, South Dakota. Graduated from University of Nebraska College of Medicine in 2005, 21 years ago. Practices with Prairie Lakes Health Care System Inc, a 112-clinician group and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
21
Trained at
University of Nebraska College of Medicine
Licensed in
SD
In the registry since
2007
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

501 Summit St
Yankton, SD 57078-3855
Phone: (605) 668-8100
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence SD7930 (SD)

Record details

NPI number1811198278
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 31, 2007
Last updated in NPPESDecember 27, 2017
Mailing address501 Summit St, Yankton, SD 57078-3855

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF NEBRASKA COLLEGE OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Prairie Lakes Health Care System Inc — 112 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount