Kathleen Mary O'Neill, PAC
Physician Assistant · Mount Vernon, WA
Kathleen Mary O'Neill, PAC is a physician assistant with a practice address in Mount Vernon, Washington, and NPI 1518914811, issued on May 30, 2006. Check the license (Washington PA10004305, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathleen Mary O'Neill
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA10004305 WA
Self-reported in NPPES; status is on the state search - Practice location
- 2320 Freeway Dr, Mount Vernon, WA 98273
- Phone
- (360) 814-6800
- Enumerated
- May 30, 2006
- Record last updated
- Jul 28, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (360) 814-6917
- Medicaid ID
- 1057449 WA
- Medicare enrollment
- Enrolled (PECOS I20071018000689); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,718 in Washington → Look up another NPI →
Also registered at 2320 Freeway Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kathleen Mary O'Neill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license PA10004305Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average physician assistant in 2024
238 Medicare Part D claims for 124 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 111 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen37 claims
- Hydroxyzine Pamoate35 claims
- Oxycodone-Acetaminophen33 claims
- Oxycodone Hcl29 claims
- Meloxicam21 claims
- Celecoxib14 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.
Industry payments in 2024: $194.69
4 payments; by number, the most common kind was food and beverage; the largest payer was Solventum Corporation. 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.
Bills Medicare through one group practice
- Public Hospital Dist NO 1 SkagitMount Vernon, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen Mary O'Neill among 3,718 physician assistant records in Washington
Kathleen Mary O'Neill, PAC is one of 3,718 physician assistant records with a practice address in Washington. 76% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 80% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1998 · median 2017 among the 2,460 with a school on file
- Record last updated2015 · 48% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 physician assistant records list a practice address in Mount Vernon
They are 23 of the 1,500 NPPES records with a practice address in Mount Vernon, and 3,718 physician assistant records in Washington.
All 3,718 in Washington → Every provider in Mount Vernon → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kristine Beck, PA-CMount Vernon, WA 982731346538964
- David Bender, PA CMt Vernon, WA 982731992750954
- Alina Gis, PA-CMount Vernon, WA 982731770342750
- Paige Hauter, PAMount Vernon, WA 982731831924794
- Ivory Larry, PA-CMount Vernon, WA 982731932109691
- Robert Rogers, P.A.-CMount Vernon, WA 982731669426417
- Jon Ruff, PA-CMount Vernon, WA 982731144504606
- Mark Vollrath, PA-CMount Vernon, WA 982731184623423
Common questions
What is Kathleen Mary O'Neill, PAC's NPI number?
Kathleen Mary O'Neill, PAC's National Provider Identifier (NPI) is 1518914811, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Mary O'Neill, PAC located?
The NPPES record lists a practice address at 2320 Freeway Dr, Mount Vernon, WA, 98273. Phone: (360) 814-6800. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Mary O'Neill, PAC's license?
NPPES lists Washington license number PA10004305, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Kathleen Mary O'Neill, PAC prescribe under Medicare Part D?
In 2024, Kathleen Mary O'Neill, PAC had 238 Medicare Part D claims for 124 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.