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Dr. Portales graduated from Ohio University College of Osteopathic Medicine and has been practicing medicine for over 20 years. He was board certified in emergency medicine in 1997 and practiced emergency medicine for 15 years.

Despite work in a wide variety of emergency medicine settings over many years, Dr. Portales did not find the practice of medicine consistent with his education as an osteopathic physician where he was trained to take a holistic approach to each patient in delivering healthcare. What he found is that most healthcare in the U.S. is delivered in a symptom approach. In other words, most patients have their symptoms treated, but seldom is the underlying cause of the problem addressed.

In the emergency department, this approach works very well and emergency medicine has made great strides in patient care. But, most people don’t go to the emergency department except on rare occasions, if ever. Yet, many people have medical problems that they see their doctor for on a fairly regular basis, perhaps a few times a year or more. These patients have chronic medical problems and in these chronic problems a symptom treatment approach does not serve the patient well.

The patient with high blood pressure serves as an example. How many patients go to the doctor for their blood pressure medicine? Blood pressure medicine only treats the symptom of elevated blood pressure but does nothing for the causes, which can be many. A more comprehensive approach addresses nutritional status, weight, stress reduction, overconsumption of stimulants, proper rest and sleep patterns, family history, and diet. These are a few of the related issues that affect blood pressure.

To address underlying causes, Dr. Portales forges a partnership with his patients. To achieve optimal health requires a certain level of commitment from the patient and lifestyle changes. These changes are not always easy and Dr. Portales will partner with his patients to help them achieve their wellness goals, whatever their level of commitment. He understands that most wellness goals are a process and are not solved with a prescription.

Dr. Portales is board certified by the American Academy of Anti-Aging Medicine and is a fellow in anti-aging, regenerative, and functional medicine. His fellowship training included over 240 hours of medical education. He has appeared on Frank Jordan’s radio show “Healthy, Wealthy, and Wise” on Sirius XM 131. He is a member in good standing of the American Academy of Anti-Aging Medicine (A4M)


  • Rosa Ramirez LVN, AS - Office Manager

    Rosa has been part of the OC Medical family since July of 2014. She is a newly grad LVN, AS as well as office manager. She is a part time student working on her BSN. Ultimately she would like work in the ER. She is goal oriented and has the drive, determination and passion to accomplish what she sets herself to do. She is compassionate and understanding with our patients. In her spare time, when she is not studying you can catch her trying new foods, going to new places, or shopping.

  • Selina Tejeda Medical Assistant - Phlebotomist

    Hello I am a Medical Assistant/Phlebotomist at OC Medical Tustin. I navigated into this field because of my children, my daughter was born with severe allergies. This has pushed me to follow my career path in the medical field and has become my priority. Overall I enjoy caring for patients. It is a great privilege to be able to help people when they are feeling vulnerable. I strive to make a positive impact in their lives. Overall, I enjoy my daily routine in dealing with various aspects of patient care.

Get Well! Live Better!

At OC Medical Tustin, as we would with a member of our own family, we aim to optimize your health utilizing traditional and alternative medicine. We strive to treat health issues at the root cause, address lifestyle issues and educate you to maintain optimal wellness.

OC Medical Tustin - Dr. Arturo Portales

OC Medical Tustin - Dr. Arturo Portales

OC Medical Values

  • Our Values


    Our values are the guiding principles that serve as the foundation of everything we do and say. These encompass our code of conduct and represent who we are and signify what we stand for.

  • Integrity


    We adhere to high moral principals and professional standards by a commitment to confidentiality, honesty, trust, transparency and respect.

  • Patient Centered


    Our highest priority is our patients, period. Each decision is based on what is most appropriate for our patients. This is why we do not accept insurance. In doing so, we are fully able to focus on you and not what insurance companies dictate us to do. You have a voice in your care – we are listening.

  • Teamwork


    Through knowledge sharing with our peers and partners, we are able to bring the most optimal and flexible healthcare options to our patients. We extend the teaming approach to our patients through education, and commitment to work together striving for the best possible outcome.

  • Flexibility


    We recognize that each patient is unique. We are committed to remaining flexible. Through open communication and feedback, we tailor our therapies to meet our individual patient’s needs.

    If you want individualized care from a physician who truly cares, then Dr. Arturo Portales and OC Medical Tustin is the place for you. Give us a call today or schedule an appointment. Walk-ins are always welcome up to 1 hour prior to close.

Patient Testimonials

  • "it helps me to know that he's always there... I CAN CALL HIM ANYTIME"

  • "I sleep better at night and have a lot more energy"

  • "She was able to do more for my shoulder... than I have been able to get done in months"

Choose Your Provider

Natural Ways to Boost Immune Function

During this current outbreak of Covid-19, I am asked on a daily basis what we can do to prevent becoming infected. Social distancing is the obvious answer, but I believe there is a lot more we can and should do. We will not be socially distancing ourselves

Hormone Balancing in Men

Hormone balancing in men starts with testosterone. Testosterone is the dominant male hormone. When men are deficient in testosterone, they feel it.

Adrenals and Cortisol

The adrenal glands are the stress glands which produce 2 hormones: cortisol and DHEA. The adrenal gland also produces epinephrine, also known as adrenalin. When we are stressed, our bodies release cortisol and epinephrine.


Words from our patients

  • Google

    "It’s like I can wake up and look forward to the day and it’s challenges. Thank you for being a truly amazing doctor, and an amazing clinic!"

    Jonny U.
  • Google

    "He helped me with some things that I couldn't get help with other doctors that I went to. They worked with me to find out my problems."

    Brian B.
  • Google

    "Dr. Portales is very knowledgeable and compassionate. He explained my lab results in detail, so that I could really understand what everything meant."

    Kathryn C


OC Medical Tustin
14642 Newport Avenue, Suite 270
Tustin, CA 92780
Phone: 714-421-4749

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