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Big Trees MD Welcomes
Dr. Jeremiah Fillo!

Moving Forward: Focusing On Excellent Care

A Letter to the Patients:


Hello Everyone!


Thank you for your continued interest in receiving medical care from me.  It has been my privilege to serve you and the Highway 4 corridor for the past 7.5 years.   Reflecting on the medical care that I have strived to maintain over the years, I am excited to be able to practice in a space where I am not driven by the number of people seen per day.  I am proud to be joining the Direct Primary Care movement as the newest physician at Big Trees MD and to continue practicing medicine where I can focus on my patients.


The initial announcement of the Arnold Family Medical Center closing and then the pivot to the clinic going to a non-physician model was quite the shock to myself, my family, and our community.  I have had many people ask me about when my new practice is opening and I have been humbled by the enthusiasm!


I know many have been left without a local doctor and are looking to see me as soon as possible.  With this in mind, Dr. Concepcion will be onboarding patients who wish to join the practice so they can get care sooner rather than later.  As I become more at home in the new practice, I will be able to assume the primary physician role for you again. 


To join Big Trees MD, the next step is to book a meet and greet (through the link below) with myself and Dr. Concepcion so you can learn more about the practice!


I wish you all the very best of health in the days to come and look forward to seeing you again.



Jeremiah Fillo, MD


Maryal Concepcion, MD FAAFP


Dr. Concepcion is a board-certified rural family practice physician who has been serving patients in Northern California since 2012 and Calaveras County since 2015. She is ecstatic to be bringing a novel model of medicine to the community including full-scope care (that means she sees infants, pregnant Mamas, children, and adults and does procedures of all sorts)! Reflecting on her time as an employed physician, she is choosing to return medical decision-making to a place where the doctor and patient make decisions rather than continuing in a model where insurance and administrators determine care and coverage.

Nurse Checking Girl


Insurance these days does not guarantee healthcare nor access to care when it is needed.


Big Trees MD is a Direct Primary Care clinic where our mission is simple:  

we are here to provide the personalized healthcare that everyone deserves.


As a board-certified rural family physician, Dr. Concepcion has the skills and resources to take care of your health needs.

Through Direct Primary Care, she also has the time needed to address your health concerns appropriately. She strives to be inclusive of all human beings and pet children too.


As a patient at Big Trees MD, you pay your doctor directly just like you pay a gym membership. Go beyond the limitations of the insurance-driven world and pay for care directly; insurance does not dictate how we provide care. 


Learn more about the practice today to see how we can help you get the care you deserve.



To some, the concept of Direct Primary Care or DPC is just too good to be true.


Take a listen to the many Physicians practicing DPC around the country in the award-winning podcast hosted weekly by Dr. Concepcion.

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