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

Dale R Mortenson, MD, FACS

Individual provider Surgery Physician · NPI 1801949722

Dale R Mortenson, MD, FACS practises General Surgery in Great Falls, Montana. Graduated from Southern Illinois University School of Medicine in 1987, 39 years ago. Practices with Benefis Hospitals Inc, a 398-clinician group and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
39
Trained at
Southern Illinois University School of Medicine
Licensed in
MT
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
FACS — Fellow of the American College of Surgeons
A surgeon admitted as a fellow of the ACS.

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Practice location Address checks out

400 13th Ave S Ste 102
Great Falls, MT 59405-4300
Phone: (406) 731-8888
Fax: (406) 731-8318
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 7773 (MT)

Record details

NPI number1801949722
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , FACS
Sole proprietorNo
NPI enumeratedJanuary 22, 2007
Last updated in NPPESMay 22, 2024
Certification dateMay 22, 2024

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolSOUTHERN ILLINOIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Benefis Hospitals Inc — 398 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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.

Hernia repair (minimally invasive) 24 times · 92nd percentile
Mastectomy 24 times · 82nd percentile
Spinal fusion 52 times · 56th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 18 times · 49th percentile
Colonoscopy 1–10 times
Hernia repair - groin (open) 1–10 times
Melanoma (skin cancer) excision 1–10 times
Removal of tissue 1–10 times
Skin biopsy 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 patients321
Services billed 683 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 $217 4 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 Benefis Hospitals Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 398 clinicians in the practice; 12 are shown here.

Other providers in Great Falls