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

Sean Eric McMillan, MD

Individual provider Rheumatology Physician · NPI 1558353821

Sean Eric McMillan, MD practises Rheumatology in Twin Falls, Idaho. Graduated from University of Florida College of Medicine in 1999, 27 years ago. Practices with St Lukes Clinic LLC, a 310-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Idaho and Utah.

Years since qualifying
27
Trained at
University of Florida College of Medicine
Licensed in
ID, UT
In the registry since
2005
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

801 Pole Line Rd W Ste 381
Twin Falls, ID 83301-5810
Phone: (208) 814-8150
Fax: (208) 732-3112
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 154 Myrtle Ave, Murray, UT 84107-4833 — (801) 266-9300

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 5891032-1205 (UT)
Rheumatology Physician Taxonomy 207RR0500X · Licence 3571655 (ID)

Record details

NPI number1558353821
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 22, 2005
Last updated in NPPESJuly 24, 2025
Certification dateJuly 24, 2025

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Medical schoolUNIVERSITY OF FLORIDA COLLEGE OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice St Lukes Clinic Llc — 310 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients219
Services billed 827 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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 $595 13 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 St Lukes Clinic LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 310 clinicians in the practice; 12 are shown here.

Other providers in Twin Falls