Gregory Armstrong, PAC
Physician Assistant · Willoughby, OH
Gregory Armstrong, PAC is a physician assistant with a practice address in Willoughby, Ohio, and NPI 1275594129, issued on Mar 30, 2006. Check the license (Ohio 50000324, as entered in NPPES) with the Ohio board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Armstrong
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 50000324 OH
Self-reported in NPPES; status is on the state search - Practice location
- 36000 Euclid Ave, Willoughby, OH 44094
- Phone
- (440) 953-6203
- Enumerated
- Mar 30, 2006
- Record last updated
- Jul 5, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (440) 953-6202
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 5,325 in Ohio → Look up another NPI →
Also registered at 36000 Euclid Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Schickri Aina, PAPhysician Assistant1215998109
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- Tammy Allen, RNCritical Care Medicine Registered Nurse1629225578
- Marwa Azem, PHARM.D.Pharmacist1881202026
- Yuriy Babayev, M.D.Diagnostic Radiology Physician1841429727
Verify Gregory Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Ohio board licenses this profession
Search for license 50000324Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average physician assistant in 2024
89 Medicare Part D claims for 66 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
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.
Gregory Armstrong among 5,325 physician assistant records in Ohio
Gregory Armstrong, PAC is one of 5,325 physician assistant records with a practice address in Ohio. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 87% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2011 · 37% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 physician assistant records list a practice address in Willoughby
They are 30 of the 1,110 NPPES records with a practice address in Willoughby, and 5,325 physician assistant records in Ohio.
All 5,325 in Ohio → Every provider in Willoughby → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Schickri Aina, PAWilloughby, OH 440941215998109
- Diann Borthwick, PA-CKirtland, OH 440941003876483
- Bonnie Broida, PAWilloughby, OH 440941023224805
- Theresa Clemens, P.A.-CWilloughby, OH 440941316152465
- David Jacobson, PAWilloughby, OH 440941760443659
- Julie Lewis, PA-CWilloughby, OH 440941497181044
- George Livingston, PAWilloughby, OH 440941033170923
- Joanne Longbons, PA-CWilloughby, OH 440941194944231
Common questions
What is Gregory Armstrong, PAC's NPI number?
Gregory Armstrong, PAC's National Provider Identifier (NPI) is 1275594129, issued on Mar 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Armstrong, PAC located?
The NPPES record lists a practice address at 36000 Euclid Ave, Willoughby, OH, 44094. Phone: (440) 953-6203. Providers update this record themselves, so call before visiting.
How can I verify Gregory Armstrong, PAC's license?
NPPES lists Ohio license number 50000324, as entered by the provider. Search the Ohio board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Armstrong, PAC prescribe under Medicare Part D?
In 2024, Gregory Armstrong, PAC had 89 Medicare Part D claims for 66 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.