Roberto Arturo Mendoza, P.A.
Physician Assistant · Downey, CA
Roberto Arturo Mendoza, P.A. is a physician assistant with a practice address in Downey, California, and NPI 1669403150, issued on Jul 5, 2006. Check the license (California PA15542, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Roberto Arturo Mendoza
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA15542 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9449 Imperial Hwy, Downey, CA 90242
- Phone
- (562) 657-2652
- Enumerated
- Jul 5, 2006
- Record last updated
- Nov 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (562) 657-2846
- Medicare enrollment
- Enrolled (PECOS I20110509000305); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 9449 Imperial Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Roberto Arturo Mendoza in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA15542Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average physician assistant in 2024
565 Medicare Part D claims for 451 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 15 claims were for opioids.
Most prescribed
- Doxycycline Monohydrate63 claims
- Cephalexin55 claims
- Albuterol Sulfate Hfa52 claims
- Meloxicam40 claims
- Amoxicillin-Clavulanate Potass34 claims
- Cefadroxil33 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupBellflower, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roberto Arturo Mendoza among 14,451 physician assistant records in California
Roberto Arturo Mendoza, P.A. 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 fileYes · 50% of these records are
- Graduated2000 · median 2018 among the 7,214 with a school on file
- Record last updated2021 · 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).
49 physician assistant records list a practice address in Downey
They are 49 of the 3,607 NPPES records with a practice address in Downey, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Downey → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Hilarie Beattie, PADowney, CA 902421215053459
- Robert Boucher, PADowney, CA 902421144364340
- Chris Ediss, PA-CDowney, CA 902421639374671
- Deniche Francis, PA-CDowney, CA 902421205044104
- Dudley FukunagaDowney, CA 902421629219282
- Mondana Hatzidakis, PA-CDowney, CA 902421689820037
- Joan McCormac, PACDowney, CA 902421457556490
- Maureen Ohara, PACDowney, CA 902421215019575
Common questions
What is Roberto Arturo Mendoza, P.A.'s NPI number?
Roberto Arturo Mendoza, P.A.'s National Provider Identifier (NPI) is 1669403150, issued on Jul 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Roberto Arturo Mendoza, P.A. located?
The NPPES record lists a practice address at 9449 Imperial Hwy, Downey, CA, 90242. Phone: (562) 657-2652. Providers update this record themselves, so call before visiting.
How can I verify Roberto Arturo Mendoza, P.A.'s license?
NPPES lists California license number PA15542, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Roberto Arturo Mendoza, P.A. prescribe under Medicare Part D?
In 2024, Roberto Arturo Mendoza, P.A. had 565 Medicare Part D claims for 451 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.