Oriesa Wiyono Oeij, PA-C
Physician Assistant · Encinitas, CA
Oriesa Wiyono Oeij, PA-C is a physician assistant with a practice address in Encinitas, California, and NPI 1568020428, issued on Jun 4, 2019. Check the license (California PA56848, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Oriesa Wiyono Oeij
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA56848 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1505 Encinitas Blvd, Encinitas, CA 92024
- Phone
- (800) 926-8273
- Enumerated
- Jun 4, 2019
- Record last updated
- Oct 6, 2025
- Fax
- (888) 539-8781
- Medicare enrollment
- Enrolled (PECOS I20200106001477); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1505 Encinitas Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Diana Paddock, PA-CPhysician Assistant1447657804
- Natasha Ruiz, NPNurse Practitioner1356862163
- Bradley Winkel, PAPhysician Assistant1902272750
Verify Oriesa Wiyono Oeij in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA56848Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% fewer Medicare Part D claims than the average physician assistant in 2024
788 Medicare Part D claims for 557 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Cephalexin94 claims
- Amoxicillin-Clavulanate Potass69 claims
- Azithromycin66 claims
- Albuterol Sulfate Hfa48 claims
- Methylprednisolone42 claims
- Paxlovid38 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- UC San Diego Health Community GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oriesa Wiyono Oeij among 14,451 physician assistant records in California
Oriesa Wiyono Oeij, PA-C 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 2019, is newer than 56% of them.
- NPI issued2019 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2019 · median 2018 among the 7,214 with a school on file
- Record last updated2025 · 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).
53 physician assistant records list a practice address in Encinitas
They are 53 of the 1,874 NPPES records with a practice address in Encinitas, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Encinitas → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Theresa Beauchamp, PAEncinitas, CA 920241245350578
- John Cowan, P.A.Encinitas, CA 920241083706089
- Margaret Diliberto, P.A.-C.Encinitas, CA 920241205922887
- Kathleen Dominguez, P.A.Encinitas, CA 920241689784530
- Ashley Dominique, PA-CEncinitas, CA 920241437454634
- Shana Forsman, PA-C, MPAPEncinitas, CA 920241306026737
- Kristina Frederick, PHYSICIAN ASSTEncinitas, CA 920241447311170
- Tuyet Le, PAEncinitas, CA 920241194735589
Common questions
What is Oriesa Wiyono Oeij, PA-C's NPI number?
Oriesa Wiyono Oeij, PA-C's National Provider Identifier (NPI) is 1568020428, issued on Jun 4, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Oriesa Wiyono Oeij, PA-C located?
The NPPES record lists a practice address at 1505 Encinitas Blvd, Encinitas, CA, 92024. Phone: (800) 926-8273. Providers update this record themselves, so call before visiting.
How can I verify Oriesa Wiyono Oeij, PA-C's license?
NPPES lists California license number PA56848, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Oriesa Wiyono Oeij, PA-C prescribe under Medicare Part D?
In 2024, Oriesa Wiyono Oeij, PA-C had 788 Medicare Part D claims for 557 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Oriesa Wiyono Oeij, PA-C's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.