Ariel Fillmore, MD
Family Medicine Physician · Missoula, MT
Ariel Fillmore, MD is a family medicine physician with a practice address in Missoula, Montana, and NPI 1033616230, issued on Apr 12, 2018. Check the license on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ariel Fillmore
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 12390020-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 401 Railroad St W, Missoula, MT 59802
- Phone
- (406) 258-4789
- Enumerated
- Apr 12, 2018
- Record last updated
- Oct 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (406) 258-4732
- Medicare enrollment
- Enrolled (PECOS I20210909002189); accepts Medicare assignment
- Medical or professional school
- University Of Utah School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 775 in Montana → Look up another NPI →
Also registered at 401 Railroad St W
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Abigail Anderson, MDStudent in an Organized Health Care Education/Training Program1386448595
- Jean Baumgardner, APRNFamily Nurse Practitioner1346654258
- Shivani BeallStudent in an Organized Health Care Education/Training Program1942004023
- Brett Bell, M.D., M.P.H.Family Medicine Physician1316359326
Verify Ariel Fillmore in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average family medicine physician in 2024
745 Medicare Part D claims for 104 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium55 claims
- Levothyroxine Sodium43 claims
- Losartan Potassium34 claims
- Lisinopril33 claims
- Omeprazole31 claims
- Amlodipine Besylate30 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): 95.7 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).
Bills Medicare through one group practice
- University OF Utah Community Physicians GroupSalt Lake City, UT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ariel Fillmore among 775 family medicine physician records in Montana
Ariel Fillmore, MD 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 2018, is newer than 87% of them.
- NPI issued2018 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2018 · median 2007 among the 464 with a school on file
- Record last updated2021 · 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).
110 family medicine physician records list a practice address in Missoula
They are 110 of the 3,567 NPPES records with a practice address in Missoula, and 775 family medicine physician records in Montana.
All 775 in Montana → Every provider in Missoula → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Beth Ammons, MDMissoula, MT 598021780623926
- Lar Autio, MDMissoula, MT 598021902850365
- Robert Cruikshank, M.D.Missoula, MT 598021700822483
- Rebecca Hoover, MDMissoula, MT 598021972502003
- Nerissa Koehn, MDMissoula, MT 598021104825728
- Kendra Lee, M.D.Missoula, MT 598021982600359
- Lisa Lovejoy, MDMissoula, MT 598021073552592
- Heather Maddox, M.D.Missoula, MT 598021578558094
Common questions
What is Ariel Fillmore, MD's NPI number?
Ariel Fillmore, MD's National Provider Identifier (NPI) is 1033616230, issued on Apr 12, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Ariel Fillmore, MD located?
The NPPES record lists a practice address at 401 Railroad St W, Missoula, MT, 59802. Phone: (406) 258-4789. Providers update this record themselves, so call before visiting.
How can I verify Ariel Fillmore, MD's license?
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 Ariel Fillmore, MD prescribe under Medicare Part D?
In 2024, Ariel Fillmore, MD had 745 Medicare Part D claims for 104 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Ariel Fillmore, MD's MIPS final score?
The 2023 MIPS final score is 95.7 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.