Portola Direct Primary Care

Portola Direct Primary Care 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 relation

ship 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.

So delighted to welcome Dr. Jennifer Lee D**g to the team! Dr. D**g is a board certified Internal Medicine specialist wh...
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.

Welcome to the FamBam! Thank you for hanging with and
08/28/2025

Welcome to the FamBam!

Thank you for hanging with and

Today's farmer's market find...not edible but a feast for the eyes. Thank you 🙏 to my market vendor amigo for the freeb...
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!


❤️

HAVE A GREAT SUMMERWhat are you plans for the summer? Life presents built in opportunities to make a change or shift a ...
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
CGM bros!Continuous glucose monitors are amazing wearable devices that provide real-time insights into how food, movemen...
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

• Sleep patterns: Revealing nightly glucose fluctuations

• 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

Excited to announce that Dr. Joshua Lin, a board certified Internal Medicine specialist, has joined our practice! Dr. J...
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!

HAPPY FATHER'S DAYEnjoy the journey and keep having fun!
06/18/2023

HAPPY FATHER'S DAY

Enjoy the journey and keep having fun!

Another one for the reading list. "Wintering." Love the concept, love the word. I have been purposely refraining from ...
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.

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1190 Roosevelt Suite 100
Irvine, CA
92620

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