Mark Rumans, MD
Gastroenterology Physician · Billings, MT
Mark Rumans, MD is a gastroenterology physician with a practice address in Billings, Montana, and NPI 1699858340, issued on Oct 23, 2006. Check the license (Montana 5300, as entered in NPPES) on the Montana Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Rumans
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 5300 MT
Self-reported in NPPES; status is on the state search - Practice location
- 2825 8TH Ave N, Billings, MT 59101
- Phone
- (406) 238-2500
- Enumerated
- Oct 23, 2006
- Record last updated
- Feb 28, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 44 in Montana → Look up another NPI →
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Verify Mark Rumans in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 5300Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark Rumans among 44 gastroenterology physician records in Montana
Mark Rumans, MD is one of 44 gastroenterology physician records with a practice address in Montana. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 23% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2008 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Montana
There are 44 gastroenterology physician records in Montana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 44 in Montana → Every provider in Billings → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Stephen Baum, MDBillings, MT 591011083650485
- Michael Fischer, MDBillings, MT 591011710098579
- Steven Hammond, MDBillings, MT 591011588766117
- Keri Hill, MDBillings, MT 591011528095155
- Thomas Korb, M.D.Billings, MT 591011821013756
- Christopher McNeill, MDBillings, MT 591011437122694
- Nicole BresslerLivingston, MT 590471669897856
- Thomas Attaway, MDGreat Falls, MT 594051922012442
Common questions
What is Mark Rumans, MD's NPI number?
Mark Rumans, MD's National Provider Identifier (NPI) is 1699858340, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Rumans, MD located?
The NPPES record lists a practice address at 2825 8TH Ave N, Billings, MT, 59101. Phone: (406) 238-2500. Providers update this record themselves, so call before visiting.
How can I verify Mark Rumans, MD's license?
NPPES lists Montana license number 5300, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.