Robert J. O'Rourke, MS, PA-C
Physician Assistant · Libby, MT
Robert J. O'Rourke, MS, PA-C is a physician assistant with a practice address in Libby, Montana, and NPI 1437640133, issued on May 29, 2018. Check the license with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Robert J. O'Rourke
- Credential
- MS, PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 320 E 2ND St, Libby, MT 59923
- Phone
- (406) 283-6900
- Enumerated
- May 29, 2018
- Record last updated
- Feb 9, 2022
- Medicare enrollment
- Enrolled (PECOS I20180925000821); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 320 E 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer AndersenClinical Social Worker1215477013
- Michael Breslow, M.D.Psychiatry Physician1841382207
- Brandon Burke, D.D.S.Dentist1174804314
- Joseph Chopyak, PACPhysician Assistant1730160888
- Dorothy Clark, RDHDental Hygienist1104490747
- Kalene Colwell, DDSGeneral Practice Dentistry1952919607
Verify Robert J. O'Rourke in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.8 times the Medicare Part D claims of the average physician assistant in 2024
4,854 Medicare Part D claims for 396 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 339 claims were for opioids.
Most prescribed
- Lisinopril232 claims
- Omeprazole216 claims
- Amlodipine Besylate194 claims
- Atorvastatin Calcium181 claims
- Hydrocodone-Acetaminophen176 claims
- Levothyroxine Sodium132 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.
Bills Medicare through one group practice
- Lincoln County Community Health Center IncTroy, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
9 physician assistant records list a practice address in Libby
They are 9 of the 139 NPPES records with a practice address in Libby, and 698 physician assistant records in Montana.
All 9 in Libby → All 698 in Montana → Every provider in Libby →
Other physician assistant records in Montana
- Jessika Abbrescia, PACKalispell, MT1740959915
- Cynthia Alarcon, PA-CHelena, MT1386981686
- Patrick Alduenda, PA-CHelena, MT1710967724
- Sheryl Alexander, D.C., P.A.Missoula, MT1326199951
- Jesse Alfiero, PA-CRonan, MT1396491155
- Robert Alfiero, PA-CRonan, MT1417029059
- Janel Allison-Shamblin, PA-CBozeman, MT1437626751
- Luke Altenhofen, PA-CLame Deer, MT1407221708
- Alexandra AlthofBillings, MT1487338034
- Brenda Anderson, PA-CKalispell, MT1912145467
Common questions
What is Robert J. O'Rourke, MS, PA-C's NPI number?
Robert J. O'Rourke, MS, PA-C's National Provider Identifier (NPI) is 1437640133, issued on May 29, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Robert J. O'Rourke, MS, PA-C located?
The NPPES record lists a practice address at 320 E 2ND St, Libby, MT, 59923. Phone: (406) 283-6900. Providers update this record themselves, so call before visiting.
How can I verify Robert J. O'Rourke, MS, PA-C's license?
Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Robert J. O'Rourke, MS, PA-C prescribe under Medicare Part D?
In 2024, Robert J. O'Rourke, MS, PA-C had 4,854 Medicare Part D claims for 396 beneficiaries; the average among physician assistant prescribers was 830. 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.