Grainne M. O'Malley, MD
Internal Medicine Physician · West Lafayette, IN
Grainne M. O'Malley, MD is an internal medicine physician with a practice address in West Lafayette, Indiana, and NPI 1407230501, issued on Jul 17, 2015. Check the license (Indiana 01080931A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Grainne M. O'Malley
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 01080931A IN
125067889 IL
Self-reported in NPPES; status is on the state search - Practice location
- 253 Sagamore Pkwy W, West Lafayette, IN 47906
- Phone
- (708) 714-4378
- Enumerated
- Jul 17, 2015
- Record last updated
- Jul 3, 2023
- Medicaid ID
- 300019370 IN
- Medicare enrollment
- Enrolled (PECOS I20180904000241); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Also registered at 253 Sagamore Pkwy W
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Katie Aldridge, NPAdult Health Nurse Practitioner1750822367
- Cheryl Arvanitis, DOFamily Medicine Physician1346335197
- Jeffrey Cahoon, MDVascular & Interventional Radiology Physician1427027226
- Jiyoung ChaePrimary Care Nurse Practitioner1568845295
- Andrew Edwards, MDFamily Medicine Physician1093784662
Verify Grainne M. O'Malley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01080931ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average internal medicine physician in 2024
8,811 Medicare Part D claims for 936 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 148 claims were for opioids.
Most prescribed
- Atorvastatin Calcium869 claims
- Lisinopril475 claims
- Amlodipine Besylate435 claims
- Levothyroxine Sodium335 claims
- Losartan Potassium311 claims
- Hydrochlorothiazide258 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 MIPS final score for 2023 (Medicare payment program): 97.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Arnett Clinic LLCWest Lafayette, IN
- IU Health Medical Group LLCIndianapolis, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grainne M. O'Malley among 2,109 internal medicine physician records in Indiana
Grainne M. O'Malley, MD is one of 2,109 internal medicine physician records with a practice address in Indiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 72% of them.
- NPI issued2015 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2015 · median 2005 among the 1,448 with a school on file
- Record last updated2023 · 43% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 internal medicine physician records list a practice address in West Lafayette
They are 12 of the 1,112 NPPES records with a practice address in West Lafayette, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in West Lafayette → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ruth Abramovitz, MDWest Lafayette, IN 479061649248915
- William Adair, M.D.West Lafayette, IN 479061780797522
- Zarah-Ann Alba, M.D.West Lafayette, IN 479061164417812
- Gagan Chadha, MDWest Lafayette, IN 479061568430874
- Timothy Fisher, MDWest Lafayette, IN 479061467421859
- Esteban Ramirez, DOWest Lafayette, IN 479061801925698
- Julianne Stout, MDWest Lafayette, IN 479061245276005
- Sarette ZawadskyWest Lafayette, IN 479061548265317
Common questions
What is Grainne M. O'Malley, MD's NPI number?
Grainne M. O'Malley, MD's National Provider Identifier (NPI) is 1407230501, issued on Jul 17, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Grainne M. O'Malley, MD located?
The NPPES record lists a practice address at 253 Sagamore Pkwy W, West Lafayette, IN, 47906. Phone: (708) 714-4378. Providers update this record themselves, so call before visiting.
How can I verify Grainne M. O'Malley, MD's license?
NPPES lists Indiana license number 01080931A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grainne M. O'Malley, MD prescribe under Medicare Part D?
In 2024, Grainne M. O'Malley, MD had 8,811 Medicare Part D claims for 936 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Grainne M. O'Malley, MD's MIPS final score?
The 2023 MIPS final score is 97.1 of 100. 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.