We are a Direct Primary Care practice designed for convenience and collaborative care located in Orange County, CA. He is a native of Southern California.
We offer an affordable membership-based practice that is designed around building lasting and open relationships. We offer same or next day appointments, no waiting rooms, and appointments that last as long as you need. In between visits, you can communicate with the doctor via messaging, text, or video chat. Dr. Johnny Tsai believes the best health care comes from an open and collaborate relationship based on mutual respect and understanding. After graduating medical school at NYU, he trained at Harbor UCLA in Family Medicine. He is board certified in Family Medicine since 2004. He also practices Chinese Acupuncture and merges integrative / functional medicine therapies into his practice.
09/04/2025
So delighted to welcome Dr. Jennifer Lee D**g to the team!
Dr. D**g is a board certified Internal Medicine specialist who cares for adults of all ages. She joins us after a decade caring for patients at Bellevue Hospital in New York City and teaching medical students and residents at NYU Langone. As an expert in point-of-care ultrasound (POCUS) she will be spearheading our in-office ultrasound screening program.
She is currently accepting new patients.
08/28/2025
Welcome to the FamBam!
Thank you for hanging with and
07/02/2025
Today's farmer's market find...not edible but a feast for the eyes.
Thank you 🙏 to my market vendor amigo for the freebie!
❤️
06/04/2025
HAVE A GREAT SUMMER
What are you plans for the summer?
Life presents built in opportunities to make a change or shift a mindset.
With school out, daylight hours lengthening, and cooling foods aplenty how can we redesign our daily habits to accommodate nature's shifts to better align with our health?
More to come...
04/01/2025
03/26/2025
CGM bros!
Continuous glucose monitors are amazing wearable devices that provide real-time insights into how food, movement, sleep and stress can impact your blood sugar levels. Even for our patients without insulin resistance or diabetes, GGMs have been an invaluable tool in our practice.
Some of the insights include:
• Glucose trends: Showing how levels change over time
• Impact of food: Identifying specific foods that cause spikes
• Effect of exercise: Demonstrating how activity influences glucose
• Stress responses: Highlighting how stress affects blood sugar
• Medication efficacy: Assessing how well insulin or other medications work
• Time in range: Quantifying the percentage of time glucose stays within target
• Glucose variability: Showing the degree of fluctuations, indicating stability
• Hypoglycemic events: Alerting to dangerous low glucose levels
• Hyperglycemic events: Alerting to dangerous high glucose levels
medicine health
03/03/2025
Excited to announce that Dr. Joshua Lin, a board certified Internal Medicine specialist, has joined our practice!
Dr. Josh has a passion for lifestyle and regeneration medicine and offers personalized and preventative care centered around metabolic and cardiovascular health.
He speaks Mandarin Chinese fluently and is currently accepting new patients!
06/18/2023
HAPPY FATHER'S DAY
Enjoy the journey and keep having fun!
02/03/2021
Another one for the reading list.
"Wintering." Love the concept, love the word. I have been purposely refraining from posting on social media since the pandemic. There's nothing wrong with taking a pause - the world has been calling for it and we deserve a bit of rest. Take some time to replenish, figure out how you want to change, then emerge feeling different because you will be. All good.
The English writer on winter as a season in nature and in every life. Relief for the exhaustion we’re all feeling — and for pandemic parenting.
Be the first to know and let us send you an email when Portola Direct Primary Care posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.
We are an Integrative Direct Primary Care practice designed for convenience and collaborative care located in Irvine, CA.
We are not a traditional doctor’s office! Instead, we offer our patients same or next day appointments, no waiting rooms, and appointments that last as long as you need. In between visits, you can communicate with the doctor via messaging, text, or video chat.
We do not bill insurance. Instead, we work directly for our patients by offering an affordable membership-based practice that is designed around building lasting and open relationships.
Our goal is to keep our patients healthy by restoring the sanctity of the doctor-patient relationship. We have the time necessary to get to know you, identify your health needs, and develop individualized wellness plans and treatment options that are mutually agreeable.
IT'S TIME FOR A MORE PERSONAL APPROACH TO MEDICINE
Dr. Johnny Tsai believes the best health care comes from an open and collaborative relationship based on mutual respect and understanding. He also practices Chinese Acupuncture/TCM and merges integrative / functional medicine therapies into his practice. He understands healing can come in many different forms and believes finding a balance between healing modalities offers the most effective strategies for health and wellness.
Dr. Tsai is a native of Southern California. After graduating medical school at NYU, he trained at Harbor UCLA in Family Medicine. He has been board certified in Family Medicine since 2004.
