Terrence James O'Malia, D.O.
Family Medicine Physician · Ronan, MT
Terrence James O'Malia, D.O. is a family medicine physician with a practice address in Ronan, Montana, and NPI 1972738532, issued on May 26, 2009. Check the license (Montana 28105, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Terrence James O'Malia
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 28105 MT
Self-reported in NPPES; status is on the state search - Practice location
- 107 6TH Ave SW, Ronan, MT 59864
- Phone
- (406) 676-4441
- Enumerated
- May 26, 2009
- Record last updated
- Apr 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (406) 676-0835
- Medicare enrollment
- Enrolled (PECOS I20200930003203); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2009
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 775 in Montana → Look up another NPI →
Also registered at 107 6TH Ave SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Adams, PTPhysical Therapist1891122529
- Kevin Adams, PTPhysical Therapist1063849701
- Phillip Anuta, DOEmergency Medicine Physician1396308789
- April CharloFamily Nurse Practitioner1053063008
- Tina Colton, P.T.Physical Therapist1750686929
- Ronald Dean, DOEmergency Medicine Physician1437198074
Verify Terrence James O'Malia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 28105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average family medicine physician in 2024
2,142 Medicare Part D claims for 225 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 105 claims were for opioids.
Most prescribed
- Levothyroxine Sodium111 claims
- Omeprazole90 claims
- Lisinopril71 claims
- Atorvastatin Calcium67 claims
- Eliquis57 claims
- Tamsulosin Hcl56 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.
Industry payments in 2024: $42.72
2 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- St Johns Lutheran Hospital IncLibby, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Terrence James O'Malia among 775 family medicine physician records in Montana
Terrence James O'Malia, D.O. 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 2009, is newer than 65% of them.
- NPI issued2009 · 65% of these records are older, 33% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2009 · 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).
15 family medicine physician records list a practice address in Ronan
They are 15 of the 112 NPPES records with a practice address in Ronan, and 775 family medicine physician records in Montana.
All 775 in Montana → Every provider in Ronan → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Emily AndersonRonan, MT 598641750744942
- Joanna Billings, D.O.Ronan, MT 598641447630868
- William Cullis, MDRonan, MT 598641174685374
- John Foster, M.D.Ronan, MT 598641588864979
- Benjamin Grass, M.D.Ronan, MT 598641467894121
- Sharla Hart, M.D.Ronan, MT 598641043326739
- Laura Hoganson, MDRonan, MT 598641295112944
- Jason JohnsonRonan, MT 598641073044343
Common questions
What is Terrence James O'Malia, D.O.'s NPI number?
Terrence James O'Malia, D.O.'s National Provider Identifier (NPI) is 1972738532, issued on May 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Terrence James O'Malia, D.O. located?
The NPPES record lists a practice address at 107 6TH Ave SW, Ronan, MT, 59864. Phone: (406) 676-4441. Providers update this record themselves, so call before visiting.
How can I verify Terrence James O'Malia, D.O.'s license?
NPPES lists Montana license number 28105, 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 Terrence James O'Malia, D.O. prescribe under Medicare Part D?
In 2024, Terrence James O'Malia, D.O. had 2,142 Medicare Part D claims for 225 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.