Direct Primary Care · Orange County

The doctor who actually has time for you.

No copays. No surprise bills. Same-day access to board-certified physicians in Costa Mesa and Orange, CA. Healthcare built around you — not your insurance.

Become a MemberLearn how it works →
Same-day appointmentsNo copays, everDirect doctor access
Amity Health care team — Costa Mesa and Orange, CA
$110
per monthTransparent, flat-rate membership
Same-day
Appointments
$0
Copays, ever
Direct
Doctor access
2
OC Locations
What is Direct Primary Care?

Healthcare built around you, not your insurance.

Direct Primary Care removes the insurance middleman entirely. One flat monthly fee. Unlimited access to your doctor.

Deep dive: How DPC works →

Unlimited visits

See your doctor as often as you need — sick visits, follow-ups, check-ins. No per-visit fees.

Same-day access

Call, text, or message your doctor directly. Same-day appointments are the norm, not the exception.

Wholesale pricing

Labs and medications at wholesale cost — passed directly to you. Tests that cost $300 at a hospital often cost $15.

No copays, ever

One flat monthly fee covers everything. No copays, no deductibles, no surprise bills.

How it works

Simple from day one.

Step 01

Choose your plan

Pick the membership tier that fits your family. Individual, senior, or child add-ons — one flat monthly fee covers everything.

Step 02

Meet your doctor

Schedule your first visit — same week, no waiting. Your doctor will spend real time getting to know you, your history, and your goals.

Step 03

Get care, anytime

Text, call, or come in. Same-day appointments, direct doctor messaging, telehealth — healthcare that actually fits your life.

Get started today
The Care Team

Physicians who left the system to do medicine right.

View full care team on About
Dr. Trevor J. Tsay
MD · Costa Mesa + Orange
Dr. Trevor J. Tsay
Board-Certified Family Medicine

Orange County born and raised, Dr. Tsay attended Villa Park High School before earning his Bachelor of Science in Biopsychology at UC Santa Barbara. He completed his medical education at California Northstate University College of Medicine, then began his residency in General Surgery at UC Davis Medical Center in Sacramento — before finding his true calling in Family Medicine through UC Davis's satellite program in Modesto, CA.

Preventive careMen's healthMetabolic health
View full care team on About
Dr. Cindy T. Yang
MD · Costa Mesa
Dr. Cindy T. Yang
Board-Certified Family Medicine

Hi, I'm Dr. Cindy Yang, and I'm excited to be a part of Amity Health! I believe great healthcare should feel unrushed, personal, and grounded in real partnership. My goal as a physician is to help you understand your body, address the root causes of illness, and build lasting health — not just mask your symptoms.

Women's healthPreventive medicineIntegrative & functional medicine
View full care team on About
Cristina Terwilliger
RN · Costa Mesa
Cristina Terwilliger
Functional Nutritionist

Cristina Terwilliger came to functional nutrition the way the best practitioners do — through personal experience. After witnessing firsthand how targeted nutrition and lifestyle changes could transform her own health, she made it her mission to help others uncover the root causes behind their symptoms rather than simply managing them.

Gut healthHormone balanceThyroid support
View full care team on About
Marshall MacDonald
MBA
Marshall MacDonald
Co-Founder & CEO

Marshall grew up in the Inland Empire and went on to earn a Bachelor of Science in Environmental Science from UC Santa Barbara and an MBA from UC Riverside. An athlete at heart — surfer, snowboarder, weightlifter, Brazilian Jiu-Jitsu practitioner — Marshall has always treated his health as the foundation that makes everything else possible.

Read full bios →
Membership Pricing

No copays. No surprise bills. Just real care.

One flat monthly fee. A family of 4 — two adults + two kids — for just $270/month.

Child
$25/month
Ages 0–26

For children and young adults up to age 26 when enrolled with a parent member.

Unlimited visits
Same-day appointments
Direct doctor access
No copays ever
Most Popular
Adult
$110/month
Ages 18–65

Comprehensive primary care with unlimited visits, direct doctor access, and no surprise bills.

Unlimited visits
Same-day & next-day access
Direct doctor messaging
Wholesale lab pricing
No copays. No surprise bills.
Telehealth included
Senior
$125/month
Ages 65+

Enhanced chronic care management and preventive medicine for patients 65 and older.

Unlimited visits
Chronic disease management
Comprehensive preventive care
No copays ever

One-time $100 enrollment fee · Annual option: pay 12 months, get 1 month free

Become a MemberSee all pricing & fee-for-service →
Our Locations

Two locations across Orange County.

Same-day appointments available Monday – Friday, 9am – 4pm. By appointment only.

Amity Health Costa Mesa
Now Open

Amity Health Costa Mesa

1640 Newport Blvd, Suite 440
Costa Mesa, CA 92627

Mon–Fri · 9am–4pm · By appointment
(949) 791-8888
Amity Health Orange
Now Open

Amity Health Orange

438 E Katella Ave, Suite B
Orange, CA 92867

Mon–Fri · 9am–4pm · By appointment
(949) 791-8888
Patient Reviews

Hear it from our patients.

★★★★★
5.0 on Google
★★★★★
“Decided to go the direct primary care route after having a difficult time finding a doctor who could see me in a reasonable timeframe. So glad to have found Dr. Tsay. Was able to get in within a few days and felt my concerns were genuinely listened to — not rushed like other doctors. His recommendations were custom to my situation. Solution oriented and not a "bandaid doctor." Thank you, Dr. Tsay.”
Ava D.Google Review
★★★★★
“Two months ago I was prescribed blood pressure medication without really being given a chance to change my diet first. Then I found Dr. Yang — and I'm so glad I did. She believed in me, always answered my questions, and taught me things I wasn't aware of. What I really loved is the attention I got. I finally have a doctor who pays attention to what the patient actually needs. Within two months, I was off the medication.”
Danny C.Google Review
★★★★★
“After trying a couple other DPC practices I was starting to wonder if membership was even worth it. Then I found Amity Health. Dr. Yang is amazing — smart, caring, compassionate, and genuinely excited to dive in and figure things out together. She won't give up on complex health issues. Her knowledge and humble personality are exactly what a DPC provider should look like.”
Deb L.Google Review
★★★★★
“If you're looking for a new doctor, I highly recommend Amity Health. Dr. Tsay is excellent — he truly takes the time to listen to all of your concerns. The experience here is refreshingly different from a typical doctor's office. Instead of being rushed through a brief appointment, Dr. Tsay genuinely cares about finding a tailored solution. No one-size-fits-all approach — just personalized, thoughtful care.”
KaylaGoogle Review
★★★★★
“Full, comprehensive visits where all my concerns actually get addressed — not rushed into 15 minutes like other providers. Easy to schedule, and I can text or call directly.”
Sunny H.Google Review
Same-day appointments available

Ready to experience a doctor who actually has time for you?

Join Amity Health and get unlimited access to board-certified physicians in Costa Mesa and Orange, CA. Starting at $110/month.

Become a MemberSee pricing →

Questions? hello@amityhealthdpc.com · (949) 791-8888