Personalized Healthcare for All Generations

At Graybill Medical Group, we’ve been a trusted source of quality health care for multiple generations of North San Diego County and Temecula families. Founded as a small family practice in Escondido 1932 by Dr. Martin B. Graybill, today we're the region's largest Independent Multi-specialty Medical Group.

Learn More About Us »

featured doctor


Isela Penunuri, MD

Dr. Isela Penunuri is Board Certified in Family Medicine. She received her undergraduate degrees in Animal Physiology and Neuroscience and Psychology from UCSD in 1995. She earned her medical degree from the Autonomous University of Guadalajara Medical School in Jalisco, Mexico in 2000. She...

See full bio »

Latest Updates

View this site in Spanish by clicking the word “Español” in the upper right hand corner of any page. You can toggle back and forth between Spanish and English by pressing the buttons “Español” and “English” respectively. Also Adult and Pediatric Patient Registration Forms can now be downloaded in either English or Spanish at Forms and Registration.

Notice of Privacy Practices Effective September 23, 2013
Notice of Privacy Practices Brochure – English
Notice of Privacy Practices Brochure – Spanish


6/24/2015 – Dr. Jenny Luu (Graybill Tri-City) Family Medicine, is so attentive and in tune with my situation. I’m actually changing her to my primary care physician. The whole staff is really great, especially the front desk personnel.–Patricia Johnson

Read more »


Why Bone Health Matters

Editor’s note: Since National Osteoporosis Awareness and Prevention Month, Women’s Health Week (May 10-16) and Mother’s Day (May 10) all occur during the month of May, we’ve decided to focus this month’s blog on osteoporosis, a disease that affects four times as many women as men. When you think of diseases that disproportionately affect women, […]

More from the blog »

Patient Portal

We’re pleased to offer our patients access to the NextGen Patient Portal. This state-of-the-art tool allows easy communication between you and your Graybill Provider in a safe and secure online environment.

Access our online patient portal »

Our Affiliations