Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Orin Paul Trentham III, MD

Individual provider Internal Medicine Physician · NPI 1992740260

Dr. Orin Paul Trentham III, MD practises Internal Medicine in Russellville, Arkansas. Graduated from University of Missouri, Columbia School of Medicine in 1988, 38 years ago. Practices with Arkansas Health Group, a 645-clinician group and accepts Medicare assignment. Licensed in Arkansas and Missouri.

Years since qualifying
38
Trained at
University of Missouri, Columbia School of Medicine
Licensed in
AR, MO
In the registry since
2006
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

1808 W Main St
Russellville, AR 72801-2724
Phone: (479) 968-2841
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 106911 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence E-12463 (AR)

Record details

NPI number1992740260
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 19, 2006
Last updated in NPPESDecember 13, 2021
Certification dateDecember 13, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MISSOURI, COLUMBIA SCHOOL OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Arkansas Health Group — 645 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients50
Services billed 51 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 Arkansas Health Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 645 clinicians in the practice; 12 are shown here.

Other providers in Russellville