Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Eric A Larson, MD

Individual provider Internal Medicine Physician · NPI 1134124019

Eric A Larson, MD practises Internal Medicine in Sioux Falls, South Dakota. Graduated from Sanford School of Medicine of University of South Dakota in 1996, 30 years ago. Practices with Sanford Medical Center, a 842-clinician group and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
30
Trained at
Sanford School of Medicine of University of South Dakota
Licensed in
SD
In the registry since
2005
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

1205 S Grange Ave Ste 510
Sioux Falls, SD 57105-0410
Phone: (605) 328-7500
Fax: (605) 328-7599
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4727 (SD)

Record details

NPI number1134124019
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2005
Last updated in NPPESFebruary 3, 2022
Certification dateFebruary 3, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSANFORD SCHOOL OF MEDICINE OF UNIVERSITY OF SOUTH DAKOTA
Graduated 1996 (30 years in practice)
Group practice Sanford Medical Center — 842 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of nail tissue 1–10 times
Removal of skin lesions 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,146
Services billed 2,679 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $51 3 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Douglas County Memorial Hospital-Cah Hospital · Armour, SD · listed as Douglas County Memorial Hospital
  • Sanford Usd Medical Center Hospital · Sioux Falls, SD · listed as Sanford Medical Center Pharmacy
  • Sanford Home Health Home health agency · Sioux Falls, SD
  • Dow Rummel Village Nursing home · Sioux Falls, SD
  • Murray County Memorial Hospital Hospital · Slayton, MN
  • Sanford Canton-Inwood Medical Center - Cah Hospital · Canton, SD
  • Sanford Tracy Medical Center Hospital · Tracy, MN
  • Aveanna Home Health Home health agency · Sioux Falls, SD

Colleagues at Sanford Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 842 clinicians in the practice; 12 are shown here.

Other providers in Sioux Falls