Elizabeth Maria Oconnor, PAC
Physician Assistant · Walnut Creek, CA
Elizabeth Maria Oconnor, PAC is a physician assistant with a practice address in Walnut Creek, California, and NPI 1356598403, issued on Aug 20, 2008. Check the license (California PA20004, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Elizabeth Maria Oconnor
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA20004 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1601 Ygnacio Valley RD, Walnut Creek, CA 94598
- Phone
- (925) 947-5266
- Enumerated
- Aug 20, 2008
- Record last updated
- Jan 11, 2022
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1601 Ygnacio Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Elizabeth Maria Oconnor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA20004Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average physician assistant in 2024
212 Medicare Part D claims for 172 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 34 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen26 claims
- Cefadroxil20 claims
- Cephalexin15 claims
- Erythromycin13 claims
- Naproxen13 claims
- Doxycycline Monohydrate12 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.
Elizabeth Maria Oconnor among 14,451 physician assistant records in California
Elizabeth Maria Oconnor, PAC 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 2008, is newer than 22% of them.
- NPI issued2008 · 22% of these records are older, 75% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2022 · 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).
89 physician assistant records list a practice address in Walnut Creek
They are 89 of the 6,170 NPPES records with a practice address in Walnut Creek, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Walnut Creek → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Carolyn Cardamone, P.A-CWalnut Creek, CA 945981639194616
- Stephanie Chin, PA-CWalnut Creek, CA 945981902936115
- Jennifer Falk, PA-CWalnut Creek, CA 945981093014110
- Megan Hardin, MPA, PA-CWalnut Creek, CA 945981831411453
- Heidi Heal, PA-CWalnut Creek, CA 945981912967498
- Coryn Nicholls, PA-CWalnut Creek, CA 945981487832739
- Ingrid Pampalone, PA-CWalnut Creek, CA 945981891937652
- Meetal Patel, PA-CWalnut Creek, CA 945981730286824
Common questions
What is Elizabeth Maria Oconnor, PAC's NPI number?
Elizabeth Maria Oconnor, PAC's National Provider Identifier (NPI) is 1356598403, issued on Aug 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth Maria Oconnor, PAC located?
The NPPES record lists a practice address at 1601 Ygnacio Valley RD, Walnut Creek, CA, 94598. Phone: (925) 947-5266. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth Maria Oconnor, PAC's license?
NPPES lists California license number PA20004, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Elizabeth Maria Oconnor, PAC prescribe under Medicare Part D?
In 2024, Elizabeth Maria Oconnor, PAC had 212 Medicare Part D claims for 172 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.