Certified by UCLA Health Simi Valley Primary & Specialty Care • Apr 12, 2026
Monday8:00 AM - 5:00 PM
Tuesday8:00 AM - 5:00 PM
Wednesday8:00 AM - 5:00 PM
Thursday8:00 AM - 5:00 PM
Friday8:00 AM - 5:00 PM
SaturdayClosed
SundayClosed
Reviews
4.1
15 reviews
5 stars
10
4 stars
1
3 stars
2
2 stars0
1 star
2
HA
Henry Avila
Mar 8, 2021
3.0
I checked in for my Coronavirus test, and it took them 1 hour before I was called into the room to have me do the test. Not the in and out process that I was told it was going to be coming from Ventura.
TM
Tom Marchetti
Nov 18, 2019
5.0
Dr Courtney O'Brien the only way to go.
MM
Michael De Martino
Nov 16, 2017
5.0
Dr Tsoi has been my doctor for five years and I consider my self very fortunate to have such a well educated, professional and competent physician.
KR
Kamryn Rey
Aug 23, 2017
5.0
We love Dr Tsoi! She's always happy to give you her time and answer questions. Staff here have always been really pleasant and helpful. Other family members and I all go here and have seen other docs here who have been good quality also.
ML
Mi Li
Apr 5, 2017
1.0
Cold, arrogant medical facility and staff
it's bout time UCLA if your patients (those who left) to be able to schedule an appointment online rather to call or wait for a call from one of your robotic representatives
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