Active NPI
Christian Castellanos
- Physician Assistant
- Oxnard, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physician Assistant
- License
- PA66452
- Practice address
- 2221 Wankel Way
Oxnard, CA 93030-0192 - Phone
- (805) 988-9366
- Fax
- (805) 483-3747
- NPI assigned
- Sep 11, 2023
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Physician Assistant | 363A00000X | PA66452 | CA | Primary |
Addresses
Primary practice location
2221 Wankel Way
Oxnard, CA 93030-0192
Mailing address
1203 Flynn Rd Unit 160
Camarillo, CA 93012-6203
Phone (805) 804-4168
Other practice location 1
3901 Las Posas Rd Ste 4
Camarillo, CA 93010-1502
Phone (805) 585-5166
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Physician Assistant
- Education
- Other, 2024
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
2221 Wankel Way
Oxnard, CA 93030-0192
Phone (805) 988-9366
2525 Erringer Rd
Simi Valley, CA 93065-2352
Phone (805) 527-1404
3525 Loma Vista Rd
Ventura, CA 93003-3165
3901 Las Posas Rd
Camarillo, CA 93010-1502
Hospital & facility affiliations
- St Johns Regional Medical Center
- Adventist Health Simi Valley
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Physician Assistant
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| PA66452 | CA | MD | Physician Assistant |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Ventura Orthopedics Medical Group, Inc. | Current | Accepting new patients | |
| Ventura Orthopedics Medical Group, Inc. | Past | Accepting new patients | |
| Trias Global, LLC | Past | Accepting new patients |
Locations
3901 Las Posas Rd
Ste 4
Camarillo, CA 93010
Phone (805) 585-5166
1203 Flynn Rd
Unit 160
Camarillo, CA 93012
Phone (805) 306-9700
2221 Wankel Way
Oxnard, CA 93030
Phone (805) 988-9366
2525 Erringer Rd
Simi Valley, CA 93065
Phone (805) 527-1404
137 E Thousand Oaks Blvd
Thousand Oaks, CA 91360
Phone (805) 379-4574
3525 Loma Vista Rd
Ste A
Ventura, CA 93003
Phone (805) 641-6415
3525 Loma Vista Rd
Ste C
Ventura, CA 93003
Phone (805) 652-6955
1145 Lindero Canyon Rd
Ste C1
Westlake Village, CA 91362
Phone (818) 865-9800
Organizations & group practices 4
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Specialist
- Ventura, CA
- NPI 1871547315
-
- Specialist
- Encinitas, CA
- NPI 1548567498
-
- Specialist
- Simi Valley, CA
- NPI 1164195707
-
- Orthopaedic Surgery of the Spine Physician
- Newport Beach, CA
- NPI 1518433457
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Oxnard, CA
- NPI 1073665360
-
- General Acute Care Hospital
- Simi Valley, CA
- NPI 1063495190
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1694390400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1750809600000",
"number": "1346027828",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1203 FLYNN RD UNIT 160",
"city": "CAMARILLO",
"state": "CA",
"postal_code": "930126203",
"telephone_number": "805-804-4168",
"fax_number": "805-830-1177"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2221 WANKEL WAY",
"city": "OXNARD",
"state": "CA",
"postal_code": "930300192",
"telephone_number": "805-988-9366",
"fax_number": "805-483-3747"
}
],
"practiceLocations": [
{
"address_1": "3901 Las Posas Rd Ste 4",
"address_purpose": "LOCATION",
"city": "Camarillo",
"state": "CA",
"postal_code": "930101502",
"country_code": "US",
"telephone_number": "805-585-5166",
"fax_number": "805-383-1786",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "CASTELLANOS",
"first_name": "CHRISTIAN",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2023-09-11",
"last_updated": "2025-06-25",
"certification_date": "2025-06-25",
"status": "A"
},
"taxonomies": [
{
"code": "363A00000X",
"taxonomy_group": "",
"desc": "Physician Assistant",
"state": "CA",
"license": "PA66452",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Oxnard, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 25, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.