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

Dr. Thomas Brent Duff, DO

Individual provider Internal Medicine Physician · NPI 1326302449

Dr. Thomas Brent Duff, DO is a Hospitalist in Twin Falls, Idaho. Qualified in 2012, 14 years ago. Practices with St Lukes Clinic LLC, a 310-clinician group and accepts Medicare assignment. Licensed in Idaho.

Years since qualifying
14
Licensed in
ID
In the registry since
2012
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

801 Pole Line Rd W
Twin Falls, ID 83301-5810
Phone: (208) 814-4100
Fax: (208) 814-4908
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence O-0876 (ID)
Internal Medicine Physician Taxonomy 207R00000X · Licence O-0876 (ID)

Record details

NPI number1326302449
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 3, 2012
Last updated in NPPESMay 6, 2019

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice St Lukes Clinic Llc — 310 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 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 patients288
Services billed 406 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

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