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

Robert D Marks, MD

Individual provider Family Medicine Physician · NPI 1598711673

Robert D Marks, MD is a Family Medicine Physician in Ennis, Montana. Practices as a sole proprietor. 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.

See every abbreviation used in this directory →

Practice location Address checks out

305 E Main St
Ennis, MT 59729-9043
Phone: (406) 682-4223
Fax: (406) 682-3874
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 5291 (MT)

Record details

NPI number1598711673
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 26, 2006
Last updated in NPPESMay 29, 2013

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