Katharine O'Brien, D.O.

Family Medicine - 

Geriatric Medicine - 

Women's Health Clinic

Prioritize Prevention: Schedule Your FREE Yearly Check-up Now!

Make time for yourself and your health by scheduling your no-cost annual check-up today.

Optimize Your Health with PromiseCare During Annual Enrollment

Make the right choice for your health by selecting PromiseCare as your healthcare partner during the Annual Enrollment Period. At PromiseCare, we are committed to ensuring your well-being and providing top-notch healthcare services.

In need of a primary care physician in Hemet?

Let's talk.

Hemet Family Medicine, Geriatric Medicine, Women's Health Clinic - Katharine O'Brien, D.O.​

Hemet Family Medicine - Katharine O'Brien, D.O.​

Family Medicine

Providing comprehensive medical care to you and your family. We believe in family first.
Hemet Geriatric Medicine - Katharine O'Brien, D.O.​

Geriatric Medicine

Delivering the highest quality of care to our seniors for the prevention and treatment of diseases and disabilities.
Hemet Women's Health Clinic - Katharine O'Brien, D.O.​

Women's Health Clinic

Diagnosing and treating conditions that affect a woman’s physical and emotional wellbeing.

Patient Reviews for Dr. Katharine O'Brien

September 9, 2022.
Dr Katharine O'Brien is a wonderful doctor. Very informative, helpful. She expects you to be a willing partner in taking care of your health, your body. Doesn't just prescribe medicine and send you on your way. She takes the time to explain what could be wrong and why she thinks a certain medicine will help. I've been seeing her for a few years now. Her office staff could be improved

We LOVE feedback from our valued patients. Please let us know how we’re doing!

Dr. Kathatharine O'Brien portrait

About Dr. Katharine O'Brien, D.O.'s Practice

Dr. Katharine O’Brien’s medical clinic has made it their mission to help patients achieve their health goals.

Dr. O’Brien’s main services include Board-Certified Family Practice, Family Health, Geriatric Health and Women’s Health.

Dr. O’Brien has extensive experience and is highly qualified to diagnose and treat all health conditions. Preventive medicine is also a major focus of her practice. She will do her best to prevent future health problems.

Dr. O’Brien has a broad range of healthcare experience and understands that patient treatment goes beyond simply diagnosing and treating the symptoms. Her patients can enjoy whole health care, through consideration of their spiritual, physical, mental and emotional needs.

Dr. O’Brien & her team work hard to provide the best possible care for you and all your family members in Hemet, CA.

Insurance Plans Accepted

We accept Medicare Advantage Plans, most PPO plans, as well as the HMO plans provided by AetnaAlignment HealthcareAnthem BlueCrossAnthem BlueShield CaliforniaBrand New DayCignaHealth NetHumanaScan Health Planand United Healthcare.

If you do not see your plan and would like to speak with one of our team members to check coverage, please contact us!

Need Care Outside of Office Hours?

Click below to find an urgent care center near you.

Office of Hemet Family Medicine, Geriatric Medicine, Women's Health Clinic Katharine O'Brien, D.O.








8:00 am – 5:00 pm

8:00 am – 5:00 pm

8:00 am – 5:00 pm

8:00 am – 5:00 pm

8:00 am – 5:00 pm



Closed for Lunch between 12:00 pm and 1:00 pm.