Maren J. Dunn, DO
Family Medicine Physician · Big Sky, MT
Maren J. Dunn, DO is a family medicine physician with a practice address in Big Sky, Montana, and NPI 1376538512, issued on Sep 14, 2005. Check the license (Montana 11561, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Maren J. Dunn
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 11561 MT
Self-reported in NPPES; status is on the state search - Practice location
- 334 Town Center Ave, Big Sky, MT 59716
- Phone
- (406) 995-6995
- Enumerated
- Sep 14, 2005
- Record last updated
- Jul 9, 2025
- Medicaid IDs
- 807252900 ID
1376538512 MT - Medicare enrollment
- Enrolled (PECOS I20120404000019); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Physicians And Surgeons, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 775 in Montana → Look up another NPI →
Also registered at 334 Town Center Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Allen, DOEmergency Medicine Physician1174609432
- Maureene Andrews, PA-CMedical Physician Assistant1396813788
- Heidi Bowman, DPTPhysical Therapist1154617504
- Alice Bremner, M.D.Internal Medicine Physician1730574674
- Lisa Brubaker, LCSWClinical Social Worker1922402882
- Anna Carl, MDEmergency Medicine Physician1811979909
Verify Maren J. Dunn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 11561Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average family medicine physician in 2024
1,929 Medicare Part D claims for 210 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 63 claims were for opioids.
Most prescribed
- Atorvastatin Calcium200 claims
- Lisinopril108 claims
- Levothyroxine Sodium96 claims
- Losartan Potassium83 claims
- Gabapentin73 claims
- Amlodipine Besylate71 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 69.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
2 hospitals and group practices
- Billings ClinicWest Yellowstone, MT · Acute Care Hospitals4 of 5 stars
- Bozeman Health Big Sky Medical Center LLCBig Sky, MT
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.
Maren J. Dunn among 775 family medicine physician records in Montana
Maren J. Dunn, DO is one of 775 family medicine physician records with a practice address in Montana. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2005 · median 2007 among the 464 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 family medicine physician records list a practice address in Big Sky
They are 5 of the 52 NPPES records with a practice address in Big Sky, and 775 family medicine physician records in Montana.
All 775 in Montana → Every provider in Big Sky → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Philip Hess, MDBig Sky, MT 597161114028735
- Jeremy Mitchell, DOBig Sky, MT 597161770781288
- Daniel Tanbakuchi, DOBig Sky, MT 597161134796378
- Peder Anderson, MDBozeman, MT 597151245465210
- Anna Beers, MDBozeman, MT 597151326434762
- Hanly Burton, D.O.Bozeman, MT 597151437357126
- Ingrid Calle, D.O.Bozeman, MT 597151245529858
- Claire Crane, MDBozeman, MT 597151902279961
Common questions
What is Maren J. Dunn, DO's NPI number?
Maren J. Dunn, DO's National Provider Identifier (NPI) is 1376538512, issued on Sep 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Maren J. Dunn, DO located?
The NPPES record lists a practice address at 334 Town Center Ave, Big Sky, MT, 59716. Phone: (406) 995-6995. Providers update this record themselves, so call before visiting.
How can I verify Maren J. Dunn, DO's license?
NPPES lists Montana license number 11561, 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 Maren J. Dunn, DO prescribe under Medicare Part D?
In 2024, Maren J. Dunn, DO had 1,929 Medicare Part D claims for 210 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Maren J. Dunn, DO's MIPS final score?
The 2023 MIPS final score is 69.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.