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

Dr. William Oliver Samuelson IV, MD

Individual provider Orthopaedic Surgery Physician · NPI 1518374644

Dr. William Oliver Samuelson IV, MD practises Orthopedic Surgery in Dakota Dunes, South Dakota. Graduated from Texas Tech University Health Science Center School of Medicine in 2014, 12 years ago. Practices with Cnos PC, a 98-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Iowa, Minnesota, Nebraska and South Dakota.

Years since qualifying
12
Trained at
Texas Tech University Health Science Center School of Medicine
Licensed in
IA, MN, NE, SD
In the registry since
2014
Specialties on file
5
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

575 N Sioux Point Rd
Dakota Dunes, SD 57049-5312
Phone: (605) 217-2667
Fax: (605) 217-2900
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 2730 Pierce St Ste 300, Sioux City, IA 51104-3765 — (712) 224-8677

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 12307 (SD)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 60328 (MN)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 32965 (NE)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence MD-47819 (IA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1518374644
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 21, 2014
Last updated in NPPESDecember 10, 2025
Certification dateDecember 10, 2025

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolTEXAS TECH UNIVERSITY HEALTH SCIENCE CENTER SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Cnos Pc — 98 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 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.

Spinal fusion 262 times · 94th percentile
Laminectomy or laminotomy (partial removal of spine bones) 72 times · 87th percentile

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 patients382
Services billed 2,443 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 $164 2 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.

  • Floyd Valley Healthcare Hospital · Le Mars, IA
  • Cherokee Regional Medical Center Hospital · Cherokee, IA
  • Dunes Surgical Hospital Hospital · Dakota Dunes, SD
  • Orange City Area Health System Hospital · Orange City, IA
  • St Lukes Regional Medical Center Hospital · Sioux City, IA

Colleagues at Cnos PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 98 clinicians in the practice; 12 are shown here.

Other providers in Dakota Dunes