Active NPI
Olivia Nguyen
- Addiction Medicine (Family Medicine) Physician
- Ventura, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Addiction Medicine (Family Medicine) Physician
- License
- A196357
- Practice address
- 300 Hillmont Ave
Ventura, CA 93003-1651 - Phone
- (805) 652-6000
- NPI assigned
- Jul 12, 2021
- Sex
- Female
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Addiction Medicine (Family Medicine) Physician | 207QA0401X | A196357 | CA | Primary |
Addresses
Primary practice location
300 Hillmont Ave
Ventura, CA 93003-1651
Mailing address
300 Hillmont Ave BLDG 340
Ventura, CA 93003-1651
Phone (805) 652-6228
Other practice location 1
300 Hillmont Ave Bldg 340
Ventura, CA 93003-1651
Phone (805) 652-6228
Other practice location 2
2150 N Victoria Ave
Oxnard, CA 93036-7791
Phone (805) 382-6296
Other practice location 3
300 Hillmont Ave Ste 101
Ventura, CA 93003-1651
Phone (805) 652-6100
Other practice location 4
300 Hillmont Ave Ste 201
Ventura, CA 93003-1651
Phone (805) 652-6100
Other practice location 5
3147 Loma Vista Rd
Ventura, CA 93003-2917
Phone (805) 652-6694
Other practice location 6
200 Hillmont Ave
Ventura, CA 93003-1647
Phone (805) 652-6729
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | olivia.nguyen@ventura.cernerdirect.com | Direct |
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: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Family Practice
- Education
- University of Texas Southwestern Medical School at Dallas, 2021
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
300 Hillmont Ave
Ventura, CA 93003-1651
Hospital & facility affiliations
- Ventura County Medical Center
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A196357 | CA | MD | Addiction Medicine (Family Medicine) Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| County of Ventura | Current | Accepting new patients | |
| County of Ventura | Current | Accepting new patients | |
| County of Ventura | Current | Accepting new patients | |
| Healthright 360 | Past | Accepting new patients | |
| Renal Consultants of Ventura County, Inc | Past | Accepting new patients |
Locations
2220 E Gonzales Rd
Ste 120AB
Oxnard, CA 93036
Phone (805) 981-5150
2240 E Gonzales Rd
Ste 110
Oxnard, CA 93036
Phone (805) 961-5161
300 Hillmont Ave
Ste 101
Ventura, CA 93003
Phone (805) 652-6100
300 Hillmont Ave
Ventura, CA 93003
Phone (805) 652-6000
300 Hillmont Ave
Ste 201
Ventura, CA 93003
Phone (805) 652-6100
133 W Santa Clara St
Ventura, CA 93001
Phone (805) 641-5600
300 Hillmont Ave
Ste 401
Ventura, CA 93003
Phone (805) 648-9830
800 S Victoria Ave
#L4640
Ventura, CA 93009
200 Hillmont Ave
Ventura, CA 93003
Phone (805) 652-5755
300 Hillmont Ave
Bldg 340
Ventura, CA 93003
Phone (805) 652-6100
3147 Loma Vista Rd
Ventura, CA 93003
Phone (805) 652-5754
Interoperability endpoints
- https://fhir4.healow.com/fhir/r4/FBCJAD
Organizations & group practices 5
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.
-
- General Acute Care Hospital
- Ventura, CA
- NPI 1629167457
-
- Community/Behavioral Health Agency
- Santa Paula, CA
- NPI 1477673606
-
- Community/Behavioral Health Agency
- Simi Valley, CA
- NPI 1609098243
-
- Substance Abuse Rehabilitation Facility
- Oxnard, CA
- NPI 1124285796
-
- Nephrology Physician
- Camarillo, CA
- NPI 1932534021
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Ventura, CA
- NPI 1629167457
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1626048000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1750636800000",
"number": "1902478779",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "300 HILLMONT AVE BLDG 340",
"city": "VENTURA",
"state": "CA",
"postal_code": "930031651",
"telephone_number": "805-652-6228"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "300 HILLMONT AVE",
"city": "VENTURA",
"state": "CA",
"postal_code": "930031651",
"telephone_number": "805-652-6000"
}
],
"practiceLocations": [
{
"address_1": "300 Hillmont Ave Bldg 340",
"address_purpose": "LOCATION",
"city": "Ventura",
"state": "CA",
"postal_code": "930031651",
"country_code": "US",
"telephone_number": "805-652-6228",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "2150 N Victoria Ave",
"address_purpose": "LOCATION",
"city": "Oxnard",
"state": "CA",
"postal_code": "930367791",
"country_code": "US",
"telephone_number": "805-382-6296",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "300 Hillmont Ave Ste 101",
"address_purpose": "LOCATION",
"city": "Ventura",
"state": "CA",
"postal_code": "930031651",
"country_code": "US",
"telephone_number": "805-652-6100",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "300 Hillmont Ave Ste 201",
"address_purpose": "LOCATION",
"city": "Ventura",
"state": "CA",
"postal_code": "930031651",
"country_code": "US",
"telephone_number": "805-652-6100",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "3147 Loma Vista Rd",
"address_purpose": "LOCATION",
"city": "Ventura",
"state": "CA",
"postal_code": "930032917",
"country_code": "US",
"telephone_number": "805-652-6694",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "200 Hillmont Ave",
"address_purpose": "LOCATION",
"city": "Ventura",
"state": "CA",
"postal_code": "930031647",
"country_code": "US",
"telephone_number": "805-652-6729",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "NGUYEN",
"first_name": "OLIVIA",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2021-07-12",
"last_updated": "2025-06-23",
"certification_date": "2025-06-23",
"status": "A"
},
"taxonomies": [
{
"code": "207QA0401X",
"taxonomy_group": "",
"desc": "Family Medicine, Addiction Medicine",
"state": "CA",
"license": "A196357",
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "olivia.nguyen@ventura.cernerdirect.com",
"affiliation": "N",
"endpointDescription": "Cerner Direct Secure Email",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "Direct Information",
"address_1": "300 Hillmont Ave",
"city": "Ventura",
"state": "CA",
"country_code": "US",
"postal_code": "930031651",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Ventura, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 23, 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.