Joseph D. Chopyak, PAC
Physician Assistant · Libby, MT
Joseph D. Chopyak, PAC is a physician assistant with a practice address in Libby, Montana, and NPI 1730160888, issued on Nov 7, 2005. Check the license (Montana 356, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joseph D. Chopyak
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 356 MT
Self-reported in NPPES; status is on the state search - Practice location
- 320 E 2ND St, Libby, MT 59923
- Phone
- (406) 283-6900
- Enumerated
- Nov 7, 2005
- Record last updated
- Sep 26, 2022
- Fax
- (406) 293-6622
- Medicare enrollment
- Enrolled (PECOS I20040322001613); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 698 in Montana → Look up another NPI →
Also registered at 320 E 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph D. Chopyak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 356Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9.4 times the Medicare Part D claims of the average physician assistant in 2024
7,813 Medicare Part D claims for 480 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 635 claims were for opioids.
Most prescribed
- Atorvastatin Calcium428 claims
- Omeprazole326 claims
- Hydrocodone-Acetaminophen307 claims
- Levothyroxine Sodium291 claims
- Lisinopril276 claims
- Gabapentin245 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).
Joseph D. Chopyak among 698 physician assistant records in Montana
Joseph D. Chopyak, PAC is one of 698 physician assistant records with a practice address in Montana. 84% 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, 95% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2003 · median 2016 among the 514 with a school on file
- Record last updated2022 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (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 698 in Montana → Every provider in Libby → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Severine Basham, P.A.Libby, MT 599231518144260
- Rosemary Bergroos, PA-CLibby, MT 599231457480279
- Jesse Brown, PA-CLibby, MT 599231467515635
- Skyler Gallaway, PA-CLibby, MT 599231902308950
- Cheryl Gourley, PA-CLibby, MT 599231700284486
- Stevi Meade, PA-CLibby, MT 599231790505519
- Elise Mills, PA-CLibby, MT 599231639918071
- Robert O'Rourke, MS, PA-CLibby, MT 599231437640133
Common questions
What is Joseph D. Chopyak, PAC's NPI number?
Joseph D. Chopyak, PAC's National Provider Identifier (NPI) is 1730160888, issued on Nov 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Joseph D. Chopyak, PAC 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 Joseph D. Chopyak, PAC's license?
NPPES lists Montana license number 356, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Joseph D. Chopyak, PAC prescribe under Medicare Part D?
In 2024, Joseph D. Chopyak, PAC had 7,813 Medicare Part D claims for 480 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.