Jonathan Edward Casillas
Medical Physician Assistant · Los Angeles, CA
Jonathan Edward Casillas is a medical physician assistant with a practice address in Los Angeles, California, and NPI 1114150927, issued on Aug 26, 2009. Check the license (California PA20136, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jonathan Edward Casillas
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA20136 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3945 Whittier Blvd., Los Angeles, CA 90023
- Phone
- (323) 223-6146
- Enumerated
- Aug 26, 2009
- Record last updated
- Sep 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (323) 223-6399
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Verify Jonathan Edward Casillas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA20136Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average medical physician assistant in 2024
224 Medicare Part D claims for 84 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium15 claims
- Amlodipine Besylate13 claims
- Escitalopram Oxalate12 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): 55.3 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).
Industry payments in 2024: $56.91
2 payments; by number, the most common kind was food and beverage; the largest payer was Sanofi Pasteur Inc. The 16,165 providers of this specialty with any payment received $1,055.00 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.
Jonathan Edward Casillas among 3,376 medical physician assistant records in California
Jonathan Edward Casillas is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 38% of them.
- NPI issued2009 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Los Angeles → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- William Chu, PA-CLos Angeles, CA 900231043227804
- Teobaldo Praslin, PA-CLos Angeles, CA 900231285820985
- Jose Sandoval, P.A.Los Angeles, CA 900231831417138
- Katie BesankoLos Angeles, CA 900241114638053
- Demetrio Cardenas, PA-CLos Angeles, CA 900221992252738
- Katherine Chin, PALos Angeles, CA 900221053654640
- Emmanuelle Marie CigarroaEast Los Angeles, CA 900221063134518
- Michael Eaton, PA-CLos Angeles, CA 900221265505614
Common questions
What is Jonathan Edward Casillas's NPI number?
Jonathan Edward Casillas's National Provider Identifier (NPI) is 1114150927, issued on Aug 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Edward Casillas located?
The NPPES record lists a practice address at 3945 Whittier Blvd., Los Angeles, CA, 90023. Phone: (323) 223-6146. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Edward Casillas's license?
NPPES lists California license number PA20136, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Jonathan Edward Casillas prescribe under Medicare Part D?
In 2024, Jonathan Edward Casillas had 224 Medicare Part D claims for 84 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is Jonathan Edward Casillas's MIPS final score?
The 2023 MIPS final score is 55.3 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.