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

Dr. Terry Dean Dennis, MD, MPH

Individual provider Internal Medicine Physician · NPI 1639244767

Dr. Terry Dean Dennis, MD, MPH is an Internal Medicine Physician in Billings, Montana. Works from 3 locations. Licensed in Montana.

Licensed in
MT
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.

See every abbreviation used in this directory →

Practice location Address checks out

801 N 29th St
Billings, MT 59101
Phone: (406) 238-2500
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 107 H Street East, Poplar, MT 59255 — (406) 768-2105
  • 107 H Street East, Poplar, MT 59255 — (406) 768-2105

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 6755 (MT)

Record details

NPI number1639244767
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MPH
Sole proprietorNo
NPI enumeratedNovember 22, 2006
Last updated in NPPESApril 22, 2019

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