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

Dr. Alexander William Nielsen, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1285194332

Dr. Alexander William Nielsen, MD practises Orthopedic Surgery in Salt Lake City, Utah. Graduated from Medical College of Wisconsin in 2019, 7 years ago. Practices with Hofmann Arthritis Institute PLLC, a 5-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Utah and Wisconsin.

Years since qualifying
7
Trained at
Medical College of Wisconsin
Licensed in
UT, WI
In the registry since
2019
Specialties on file
2
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

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

Salt Lake City, UT

No coordinates on file. Search this address in Google Maps

Additional practice locations (1)

  • 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522 — (800) 803-8155

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 13775607-1205 (UT)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (WI)

Record details

NPI number1285194332
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 24, 2019
Last updated in NPPESAugust 7, 2024
Certification dateAugust 7, 2024

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2019 (7 years in practice)
Group practice Hofmann Arthritis Institute Pllc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
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.

Hip replacement 11 times · 51st percentile
Knee replacement 11 times · 37th percentile
Lower limb (leg) arthroscopy (minimally invasive joint repair) 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 patients41
Services billed 120 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.

Travel and Lodging $1,686 3 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $702 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 Hofmann Arthritis Institute PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 5 clinicians in the practice; 3 are shown here.

Other providers in Salt Lake City