Second Opinion Physician is a virtual medical consultation service addressing traumatic brain injury and mood and behavior disorders.

Our Purpose

We invite individuals to use this site to connect with holistic practitioners utilizing state of the diagnostic protocols and treatment plans.

The site is also intended to be a resource for links to other websites, podcasts and references for the purpose of using our perspective as your Second Opinion Physician. It is not very common to find a practitioner who stays current on state of the art advances in nutrition, hormones and immunity as they relate to optimal performance of the brain. There are great physicians leading the way with provocative therapies, yet they are few and far between. The great think about the internet, is that it brings us closer together and helps everyone gain access to innovation and targeted therapies.

Second Opinion Physician was established with the focus on addressing mood and behavior disorders as they related to nutritional and hormonal brain biochemistry.   

Why We Do It

Because of the environment and many industries lack sufficient oversight to protect our exposure to toxins in the atmosphere, water and in our diets. The human body is constantly bombarded by elements of our fast pace society, and as a result we develop imbalances caused by abuse, emotional stress, trauma, toxin overload, intestinal dysbioses, hormone disruptions, methylation imbalances, malabsorption or biochemical issues. These lead to an array epigenetic and genetic conditions. To get a handle on one's health condition, it is necessary for you doctor to have clarity in these areas and an ambition to recognize our changing awareness about health and well-being.

Who We Are

Founder, Osteopathic Physician, Organic Farmer

Dr David Epstein is a licensed, osteopathic physician and telemedicine consultant focusing on mood and behavioral disorders. Having earned his degree at the Texas College of Osteopathic Medicine, Dr Dave opened a private practice 30 years ago and applied his  skills in therapies such as EDTA chelation therapy, IV vitamins and the Myers Coctail, H2O2 therapy, bio-identical hormones, digestive health and nutrition.

Dr David Epstein began his career 30 years ago after completing med school at the Texas College of Osteopathic Medicine and his internship in Flint Michigan, the year Michael Moore filmed 'Roger and Me.'  He was raised in a vegetarian household (even though he is a proponent of an organic ketogenic diet). Epstein received his undergraduate degree from UC Berkely and UT Austin in the areas of art and psychology. This was the backdrop to what has become an enlightened approach to medicine, advocating for a more sustainable model in healthcare. 

Somewhat of an overachiever, Dr Dave is also the founder and manager of two other companies, Earth Solutions which he founded in 1992 and Bioponica in 2010. In early 2018, Dr Dave will be moving his telemedicine practice to the Biofarm in Oregon which he designed and built with his company as a model for a more sustainable approach to organic farming.

With his company websites Second Opinion Physician and Biotype Nutrients Dr Dave hopes to bring physicians and patients together in an easy access mode to facilitate great healing and learning through the most practical means available.His long term goal is to integrate food, nutrition, sustainable living and mental health to help make the world a happier place for everyone.

Our Focus

 Second Opinion Physician, P.C. is an online medical practice aimed at making healthcare more affordable and practical while focusing on an area of health that has been overlooked until recently.

Having recently trained with Dr William Walsh PhD, Dr Dave uses the concept of 'Biotypes' in treating depression, schizophrenia, autism, bipolar disorder, insomnia, psychosis, anxiety, dementia. OCD and ADHD. According to Dr Walsh's extensive research the vast majority of mood disorders are associated with one of 'The 5 Biotypes of Depression.' This novel approach, characterizes key imbalances that affect brain function, specifically related to oxidative stress, copper overload, methylation imbalances, pyrroluria and various nutrient deficiencies. With sufficient nutrients on board, the necessary biochemical processes related to neurotransmitter function are corrected, leading to a more balanced brain function. The Walsh Test Panel is utilized to help physicians diagnose these conditions and provide supplementation per the Walsh Protocol.

Also a student of the work of Intervention Endocrinologist Mark Gordon MD, an area of great interest to Dr Epstein is Post Traumatic Stress Disorder - PTSD, and Traumatic Brain Injury - TBI. In the past few years a great deal of research has been published showing the role of hormones and brain function. Ironically, the consequence of head trauma is hormonal dysregulation due to inflammation of the hypothalamus and pituitary gland. As the control mechanism to the endocrine system, the disruption of the function caused by trauma leads to severe mood and behavioral disorders. According to Dr Gordon, PTSD itself has been corrected by identifying deficiencies and replacing low levels of hormones which play a vital role in neuroprotection and brain inflammation. When our of balance hormones are corrected, PTSD and other symptoms associated with trauma have been radically improved. 


Request Free Pre-Consultation or General Inquiry

Mood and Behavior Disorders Treated

Alcohol Abuse
Anger Management
Antisocial Personality
Asperger’s Syndrome

Bipolar Disorder
Borderline Personality
Chronic Relapse
Developmental Disorders
Drug Abuse
Eating Disorders
Emotional Disturbance
Learning Disabilities
Medication Management
Narcissistic Personality

Obsessive-Compulsive (OCD)
Oppositional Defiance
Sleep or Insomnia
Substance Abuse
Suicidal Ideation
Trauma and PTSD
Weight Loss

To understand more about the Walsh Protocol for mood and behavioral disorders and learn how it may be of help toyou or a loved one, follow our blog and be sure to get a copy of Dr Walsh’s revolutionary book Nutrient Power; Heal Your Biochemistry and Heal Your Brain.  Through analysis of over 50,000 patient labs profiles, his collective research has established a clear nutritional strategy for correcting improving ones neurotransmitter status through balancing underlying brain chemistry issues.

Learn more about our protocol and fees here.



Dr Dave is a talented compassionate integrative physician. He places his patients 1st and utilizes cutting edge therapies that help patients regain optimal health. I enjoyed working along side him and I highly endorse his clinical skills. Not only do I recommend that patients see him but I myself as an integrative physician would consult with him about my own healthcare needs. Read More

 Gez Agolli NMD, PhD, DrPH
Managing Director at Progressive Medical Center –Maxmanc Inc

Dr. Epstein came to our community as a family practice physician in the late 80s. I noticed that he was an osteopath, with a respectful, holistic approach to treating the body. Our community was so grateful that he chose to be our doctor. It was the birth of my son that made me question the medical model of treating symptoms in the body rather than supporting our bodies so they in turn are able to take care of us. Read More

Anita B.
Patient of Dr Dave

Dr. Epstein, Thank You so much!!! I have finally gotten to an optimal state of cognitive health. Your tailored supplements have given me a sense of wellbeing which I never had. I always suffered from ADD and for few years, took Adderall. The Adderall kept me dependent, and at best, masked the symptoms. Following your recommendation, I no longer need Adderall. My ADD symptoms are being addressed in a proper way. Read More

Patient of Dr Dave