Medical Professionals

Medical Director:  Dr. Lily Phillips

Bachelor of Science  -  1993   
UCLA  in Physiological Sciences 
(the University of California at Los Angeles)
Doctor of Medicine  M.D. -1997
USC, Keck School of Medicine
(University of Southern California)
Family Medicine Residency - 1997-2000
Loma Linda University Medical Center

 In the past 20 yrs, Dr. Phillips has gathered a wide spectrum of clinical experiences including hospital, urgent care, and enjoyed providing state of the art medical care for children, adolescents, and men and women of all ages, in the settings of private practice, Kaiser, and County Dept of Public Health. 

Dr. Phillips sees her medical profession as her life passion and is dedicated to heal and to partner with her patients to achieve optimal health via cutting-edge, evidence-based medicine, compassion, and education.
 Dr. Phillips has a big heart and she looks for opportunities to change lives one at a time whether here with her patients, in her personal life among her family and friends, or overseas volunteering in a medical mission overseas.  

Dr. Phillips is fluent in American English, Mandarin Chinese, and Medical Spanish.

Nurse Practitioner: Peter O'Brien

Peter O'Brien is an attentive and compassionate nurse practitioner dedicated to outstanding, state-of-the-art health care.  Mr. O'Brien attended the prestigious Simmons College, where he received his nurse practitioner degree, and has had wonderful reviews from patients over the past year in family medicine. 

Outside of his practice, he enjoys surfing, reading books, and traveling. He is a member of the American Association of Nurse Practitioners and the CA Association of Nurse Practitioners. 

Patients love and trust Mr. O'Brien's expertise because he delivers excellent health outcomes.

Here are some recent verified reviews about Mr. O'Brien found online:

"He is fantastic, very thorough! Super compassionate, fabulous, kind, a real lifesaver! He is ethical, encouraging, a great listener and wonderfully concerned. He is also extremely on top of current research and absolutely able to allow the patient direct the treatment. It is rare to find a health care provider secure enough to listen as thoroughly as he does!"

" I would highly recommend Dr. O'Brien to friends and family. His personable and positive attitude made my visit enjoyable. Thank you, Dr. O'Brien and staff!"

Physician Assistant: Tiffany Kaufman, MPH, PA-C

Tiffany has practiced medicine full time as a Physician Assistant since 2003.  She received her Bachelor of Science degree in dietetics from the University of Wisconsin-Madison.  She completed the PA program at Novasoutheastern University in Fort Lauderdale, Florida, where she also obtained a Master's degree in Public Health.
Tiffany has over 8 years of experience in Obstetrics and Gynecology as well as over 5 years in Family Medicine/ Urgent Care. She is a caring healer with keen clinical insights and goes out of her way to restore folks back to optimal health.  She works closely as a team with all the physicians on our team to ensure best possible outcomes for our patients. 
 In her spare time, she enjoys yoga, running marathons, skiing and spending time with family and friends.

Contact Us

This page provides you with practical information about our practice. It includes descriptions of our office location, including a map and directions, hours, appointment scheduling, insurance acceptance and billing policies.

Murrieta Express Care
24910 Las Brisas Road Suite #116
Murrieta, CA 92562
Tel: (951) 667-7780

Click here for door to door driving directions

Office Hours
Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM
Saturday: 8:30 AM - 4:00 PM
Sunday: Closed
(951) 667-7780
24910 Las Brisas Road Suite #116 Murrieta, CA 92562