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

Dr. Christopher M Larson

Individual provider Surgery Physician · NPI 1295990141

Dr. Christopher M Larson practises General Surgery in Aberdeen, South Dakota. Graduated from Sanford School of Medicine of University of South Dakota in 2003, 23 years ago. Practices with Avera St Lukes, a 166-clinician group and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
23
Trained at
Sanford School of Medicine of University of South Dakota
Licensed in
SD
In the registry since
2008
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Practice location Address checks out

310 S Penn St Ste 201
Aberdeen, SD 57401-4553 Not confirmed with CMS for 12 years — call before visiting
Phone: (605) 229-1367
Fax: (605) 229-1002
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

Surgery Physician (primary) Taxonomy 208600000X · Licence 7279 (SD)

Record details

NPI number1295990141
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJuly 21, 2008
Last updated in NPPESJanuary 21, 2014

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Also practisesCOLORECTAL SURGERY (PROCTOLOGY), PERIPHERAL VASCULAR DISEASE, THORACIC SURGERY, VASCULAR SURGERY
Medical schoolSANFORD SCHOOL OF MEDICINE OF UNIVERSITY OF SOUTH DAKOTA
Graduated 2003 (23 years in practice)
Group practice Avera St Lukes — 166 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 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.

Colonoscopy 431 times · 99th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 321 times · 96th percentile
Hernia repair - groin (open) 16 times · 94th percentile
Mastectomy 13 times · 68th percentile
Hernia repair (minimally invasive) 1–10 times
Melanoma (skin cancer) excision 1–10 times
Removal of skin lesions 1–10 times
Removal of tissue 1–10 times
Spinal fusion 1–10 times
Varicose vein removal 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 patients730
Services billed 1,424 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 $203 10 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.

Colleagues at Avera St Lukes

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 166 clinicians in the practice; 12 are shown here.

Other providers in Aberdeen