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

Mark Rumans, MD

Individual provider Gastroenterology Physician · NPI 1699858340

Mark Rumans, MD is a Gastroenterology Physician in Billings, Montana. Licensed in Montana. Registered with an NPI since 2006.

Licensed in
MT
In the registry since
2006
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

2825 8th Ave N
Billings, MT 59101-0909
Phone: (406) 238-2500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 5300 (MT)

Record details

NPI number1699858340
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 23, 2006
Last updated in NPPESFebruary 28, 2008
Mailing addressPo Box 35100, Billings, MT 59107-5100

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