Mary D. O'Rourke, MD
Internal Medicine Physician · Bozeman, MT
Mary D. O'Rourke, MD is an internal medicine physician with a practice address in Bozeman, Montana, and NPI 1033125091, issued on Jul 31, 2006. Check the license (Montana 11625, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mary D. O'Rourke
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 11625 MT
MD00033119 WA
Self-reported in NPPES; status is on the state search - Practice location
- 915 Highland Blvd, Bozeman, MT 59715
- Phone
- (406) 414-5000
- Enumerated
- Jul 31, 2006
- Record last updated
- Apr 3, 2025
- Medicaid ID
- 1033125091 MT
- Medicare enrollment
- Enrolled (PECOS I20080701000411); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 1986
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 324 in Montana → Look up another NPI →
Also registered at 915 Highland Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary D. O'Rourke in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 11625Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
150 Medicare Part D claims for 68 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Clopidogrel14 claims
- Prednisone12 claims
- Cefuroxime11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital affiliation
- Bozeman Health Deaconess HospitalBozeman, MT · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mary D. O'Rourke among 324 internal medicine physician records in Montana
Mary D. O'Rourke, MD is one of 324 internal medicine physician records with a practice address in Montana. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 44% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1986 · median 2006 among the 191 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 internal medicine physician records list a practice address in Bozeman
They are 35 of the 2,433 NPPES records with a practice address in Bozeman, and 324 internal medicine physician records in Montana.
All 324 in Montana → Every provider in Bozeman → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Timothy Adams, MDBozeman, MT 597151891706537
- James Attarian, MDBozeman, MT 597151144209198
- David Crites, MDBozeman, MT 597151164457453
- Robert Hathaway, MDBozeman, MT 597151427068295
- Michael Herring, MDBozeman, MT 597151104840842
- Pamela Hiebert, MDBozeman, MT 597151023030079
- Thomas Kelly, MDBozeman, MT 597151437148194
- James Loeffelholz, MDBozeman, MT 597151861416331
Common questions
What is Mary D. O'Rourke, MD's NPI number?
Mary D. O'Rourke, MD's National Provider Identifier (NPI) is 1033125091, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary D. O'Rourke, MD located?
The NPPES record lists a practice address at 915 Highland Blvd, Bozeman, MT, 59715. Phone: (406) 414-5000. Providers update this record themselves, so call before visiting.
How can I verify Mary D. O'Rourke, MD's license?
NPPES lists Montana license number 11625, 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.
How much does Mary D. O'Rourke, MD prescribe under Medicare Part D?
In 2024, Mary D. O'Rourke, MD had 150 Medicare Part D claims for 68 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.