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

Individual provider Family Medicine Physician · NPI 1255623583

Aaron Tenharmsel, MD is a Family Practice in Billings, Montana. Graduated from Rush Medical College of Rush University in 2011, 15 years ago. Practices with Cogent Healthcare of Montana P C, a 82-clinician group and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
15
Trained at
Rush Medical College of Rush University
Licensed in
MT
In the registry since
2011
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

1233 N 30th St
Billings, MT 59101-0127
Phone: (406) 237-7000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MED-PHYS-LIC-33530 (MT)

Record details

NPI number1255623583
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 4, 2011
Last updated in NPPESJuly 2, 2016
Mailing address1233 N 30th St, Billings, MT 59101-0127

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolRUSH MEDICAL COLLEGE OF RUSH UNIVERSITY
Graduated 2011 (15 years in practice)
Group practice Cogent Healthcare Of Montana P C — 82 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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