Ludwing Oswaldo Herrera Castellanos, PA-C
Physician Assistant · Los Angeles, CA
Ludwing Oswaldo Herrera Castellanos, PA-C is a physician assistant with a practice address in Los Angeles, California, and NPI 1730894460, issued on Jan 17, 2023. Check the license (California PA64121, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ludwing Oswaldo Herrera Castellanos
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA64121 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1731 E 120TH St, Los Angeles, CA 90059
- Phone
- (818) 621-5885
- Enumerated
- Jan 17, 2023
- Record last updated
- Feb 29, 2024
- Medicare enrollment
- Enrolled (PECOS I20241122001204); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1731 E 120TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Saimon Acevedo OrtizStudent in an Organized Health Care Education/Training Program1295619229
- Natalie AcevesStudent in an Organized Health Care Education/Training Program1831035682
- Jillian Acosta, MDStudent in an Organized Health Care Education/Training Program1972422277
- Manuel Acuna, MDStudent in an Organized Health Care Education/Training Program1235077439
- Temiloluwa AdanlawoStudent in an Organized Health Care Education/Training Program1457226482
- Rutha AdhanomStudent in an Organized Health Care Education/Training Program1073487161
Verify Ludwing Oswaldo Herrera Castellanos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA64121Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average physician assistant in 2024
496 Medicare Part D claims for 152 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Amlodipine Besylate29 claims
- Rosuvastatin Calcium27 claims
- Atorvastatin Calcium26 claims
- Omeprazole21 claims
- Losartan Potassium20 claims
- Metformin Hcl20 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.
Industry payments in 2024: $638.30
27 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 64,719 providers of this specialty with any payment received $841.65 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.
Bills Medicare through one group practice
- Eli Ahdoot DO IncBurbank, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ludwing Oswaldo Herrera Castellanos among 14,451 physician assistant records in California
Ludwing Oswaldo Herrera Castellanos, 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 2023, is newer than 80% of them.
- NPI issued2023 · 80% of these records are older, 13% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2023 · median 2018 among the 7,214 with a school on file
- Record last updated2024 · 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).
935 physician assistant records list a practice address in Los Angeles
They are 935 of the 69,537 NPPES records with a practice address in Los Angeles, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Los Angeles → Physician Assistant nationwide →
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- Rita Luchembe, PALos Angeles, CA 900591326174939
- Melissa Martinez, PA-CLos Angeles, CA 900591720138688
Common questions
What is Ludwing Oswaldo Herrera Castellanos, PA-C's NPI number?
Ludwing Oswaldo Herrera Castellanos, PA-C's National Provider Identifier (NPI) is 1730894460, issued on Jan 17, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Ludwing Oswaldo Herrera Castellanos, PA-C located?
The NPPES record lists a practice address at 1731 E 120TH St, Los Angeles, CA, 90059. Phone: (818) 621-5885. Providers update this record themselves, so call before visiting.
How can I verify Ludwing Oswaldo Herrera Castellanos, PA-C's license?
NPPES lists California license number PA64121, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ludwing Oswaldo Herrera Castellanos, PA-C prescribe under Medicare Part D?
In 2024, Ludwing Oswaldo Herrera Castellanos, PA-C had 496 Medicare Part D claims for 152 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.