Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Olivia Nguyen

Individual provider Addiction Medicine (Family Medicine) Physician · NPI 1902478779

Olivia Nguyen is a Family Practice in Ventura, California. Graduated from University of Texas Southwestern Medical School at Dallas in 2021, 5 years ago. Practices with County of Ventura, a 274-clinician group, works from 7 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
5
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
CA
In the registry since
2021

Practice location Address checks out

300 Hillmont Ave
Ventura, CA 93003-1651
Phone: (805) 652-6000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (6)

  • 2150 N Victoria Ave, Oxnard, CA 93036-7791 — (805) 382-6296
  • 300 Hillmont Ave Ste 101, Ventura, CA 93003-1651 — (805) 652-6100
  • 200 Hillmont Ave, Ventura, CA 93003-1647 — (805) 652-6729
  • 3147 Loma Vista Rd, Ventura, CA 93003-2917 — (805) 652-6694
  • 300 Hillmont Ave Ste 201, Ventura, CA 93003-1651 — (805) 652-6100
  • 300 Hillmont Ave Bldg 340, Ventura, CA 93003-1651 — (805) 652-6228

Specialties & licences

Addiction Medicine (Family Medicine) Physician (primary) Taxonomy 207QA0401X · Licence A196357 (CA)

Record details

NPI number1902478779
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedJuly 12, 2021
Last updated in NPPESJune 23, 2025
Certification dateJune 23, 2025
Mailing address300 Hillmont Ave Bldg 340, Ventura, CA 93003-1651

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 2021 (5 years in practice)
Group practice County Of Ventura — 274 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Ventura