Richard Harry Onysko, PA
Physician Assistant · Arcadia, CA
Richard Harry Onysko, PA is a physician assistant with a practice address in Arcadia, California, and NPI 1679683239, issued on Aug 30, 2006. Check the license (California PA11608, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Richard Harry Onysko
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA11608 CA
Self-reported in NPPES; status is on the state search - Practice location
- 301 W Huntington Dr, Arcadia, CA 91007
- Phone
- (626) 294-4880
- Enumerated
- Aug 30, 2006
- Record last updated
- Mar 20, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (626) 294-4888
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 301 W Huntington Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- James Chuang, MDRadiation Oncology Physician1720195977
Verify Richard Harry Onysko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA11608Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average physician assistant in 2024
48 Medicare Part D claims for 16 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
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: $958.82
18 payments; by number, the most common kind was food and beverage; the largest payer was Lexicon Pharmaceuticals, Inc. The 64,719 providers of this specialty with any payment received $841.65 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.
Richard Harry Onysko among 14,451 physician assistant records in California
Richard Harry Onysko, PA is one of 14,451 physician assistant records with a practice address in California. 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 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2015 · 40% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 physician assistant records list a practice address in Arcadia
They are 27 of the 2,033 NPPES records with a practice address in Arcadia, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Arcadia → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Dana BoutrosArcadia, CA 910071134654965
- John Cary, PA-CArcadia, CA 910071821685942
- Giovanni DavidArcadia, CA 910071952012437
- Johanna De SilvaArcadia, CA 910071003495573
- Janel Encinas, P.A.Arcadia, CA 910071861436230
- Alex Fan, PA-CArcadia, CA 910071659086783
- Ginamarie Farino, PA-CArcadia, CA 910071326196635
- Helen La, P.A.C.Arcadia, CA 910071639113418
Common questions
What is Richard Harry Onysko, PA's NPI number?
Richard Harry Onysko, PA's National Provider Identifier (NPI) is 1679683239, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard Harry Onysko, PA located?
The NPPES record lists a practice address at 301 W Huntington Dr, Arcadia, CA, 91007. Phone: (626) 294-4880. Providers update this record themselves, so call before visiting.
How can I verify Richard Harry Onysko, PA's license?
NPPES lists California license number PA11608, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Richard Harry Onysko, PA prescribe under Medicare Part D?
In 2024, Richard Harry Onysko, PA had 48 Medicare Part D claims for 16 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.