Ruben Castaneda, PA-C
Physician Assistant · Duarte, CA
Ruben Castaneda, PA-C is a physician assistant with a practice address in Duarte, California, and NPI 1285837633, issued on Jun 5, 2007. Check the license (California 14426, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ruben Castaneda
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 14426 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1345 Huntington Dr, Duarte, CA 91010
- Phone
- (626) 359-8604
- Enumerated
- Jun 5, 2007
- Record last updated
- Mar 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (626) 359-8563
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Ruben Castaneda in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 14426Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average physician assistant in 2024
325 Medicare Part D claims for 81 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone54 claims
- Albuterol Sulfate22 claims
- Doxycycline Monohydrate19 claims
- Naproxen19 claims
- Amoxicillin-Clavulanate Potass16 claims
- Diclofenac Sodium14 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.
Ruben Castaneda among 14,451 physician assistant records in California
Ruben Castaneda, 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 2007, is newer than 13% of them.
- NPI issued2007 · 13% of these records are older, 78% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2014 · 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).
54 physician assistant records list a practice address in Duarte
They are 54 of the 1,287 NPPES records with a practice address in Duarte, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Duarte → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Seda Barzegar, PADuarte, CA 910101780613943
- Mario Cuevas, PACDuarte, CA 910101881763639
- Mildred Fabros, PA-CDuarte, CA 910101366405896
- Patricia Fann, PACDuarte, CA 910101184731101
- Hilary Gibbins, P.A.Duarte, CA 910101639258395
- Rose Hiu, PACDuarte, CA 910101538255914
- Kalika Johnson, PA-CDuarte, CA 910101689619504
- Felicia Kinnard, PA CDuarte, CA 910101982795597
Common questions
What is Ruben Castaneda, PA-C's NPI number?
Ruben Castaneda, PA-C's National Provider Identifier (NPI) is 1285837633, issued on Jun 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ruben Castaneda, PA-C located?
The NPPES record lists a practice address at 1345 Huntington Dr, Duarte, CA, 91010. Phone: (626) 359-8604. Providers update this record themselves, so call before visiting.
How can I verify Ruben Castaneda, PA-C's license?
NPPES lists California license number 14426, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ruben Castaneda, PA-C prescribe under Medicare Part D?
In 2024, Ruben Castaneda, PA-C had 325 Medicare Part D claims for 81 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.