NPPES file of Aug 9, 2026

Christian Castellanos

Physician Assistant · Oxnard, CA

Christian Castellanos is a physician assistant with a practice address in Oxnard, California, and NPI 1346027828, issued on Sep 11, 2023. Check the license (California PA66452, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1346027828
Name
Christian Castellanos
Primary taxonomy
Physician Assistant 363A00000X
License number
PA66452 CA
Self-reported in NPPES; status is on the state search
Practice location
2221 Wankel Way, Oxnard, CA 93030
Phone
(805) 988-9366
Enumerated
Sep 11, 2023
Record last updated
Jun 25, 2025
Fax
(805) 483-3747
Medicare enrollment
Enrolled (PECOS I20250702003856); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest physician assistant records → All 14,451 in California → Look up another NPI →

Also registered at 2221 Wankel Way

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Andrew Armstrong, PA-C, MPASPhysician Assistant1306196316
  2. Kevin Deitel, MDOrthopaedic Surgery of the Spine Physician1033111380
  3. Deborah Fuqua Cuen, OTR/LOccupational Therapist1366544751
  4. Mark Ghilarducci, M.D.Sports Medicine (Orthopaedic Surgery) Physician1922063700
  5. Nicola GrunOccupational Therapist1245760776
  6. J HirstOrthopedic Physical Therapist1528592995

Verify Christian Castellanos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA66452    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Ventura Orthopedics Medical Group IncOxnard, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Christian Castellanos among 14,451 physician assistant records in California

Christian Castellanos 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
  • Graduated2024 · 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).

69 physician assistant records list a practice address in Oxnard

They are 69 of the 3,211 NPPES records with a practice address in Oxnard, and 14,451 physician assistant records in California.

All 14,451 in California → Every provider in Oxnard → Physician Assistant nationwide →

The 8 physician assistant records with the nearest ZIP codes

  1. Andrew Armstrong, PA-C, MPASOxnard, CA 930301306196316
  2. Nicolas Dejong, PA-COxnard, CA 930301902204803
  3. Joanne Deprisco, P.A.Oxnard, CA 930301275627358
  4. Michelle Fishman, PA-COxnard, CA 930301689838609
  5. Alexander Jonusas, PA-COxnard, CA 930301427275833
  6. Kathryn Lynch, PA-COxnard, CA 930301194011973
  7. Julie Morantz, PA-COxnard, CA 930301457611667
  8. Janis Parkhurst, PA-COxnard, CA 930301861435067

Common questions

What is Christian Castellanos's NPI number?

Christian Castellanos's National Provider Identifier (NPI) is 1346027828, issued on Sep 11, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Christian Castellanos located?

The NPPES record lists a practice address at 2221 Wankel Way, Oxnard, CA, 93030. Phone: (805) 988-9366. Providers update this record themselves, so call before visiting.

How can I verify Christian Castellanos's license?

NPPES lists California license number PA66452, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.