Premier Integrative Functional Medicine Root Cause Health Care

Based in Placentia, CA - serving Orange County and surrounding areas in person and nation wide via telehealth

Dr. Craig Mortensen, DC, IFMCP, QME, NRCME — Founder and Functional Medicine Physician at Premier IFM in Placentia, Orange County, CA

Written by Dr. Craig Mortensen, DC, IFMCP, QME | IFM-Certified Functional Medicine Physician | Founder, Premier IFM

Sick and tired of being sick and tired?

Join 5,000+ patients across the U.S. who have found answers and restored their health with Premier IFM

We will get to the root cause of your problems.

A Different Kind of Health Care - Functional Medicine

Integrative and functional medicine is a patient-centered, root-cause approach to healthcare that asks why you're sick, not just what you have. As an integrative and functional medicine clinic based in Placentia, we combine the best of conventional diagnostics with a deeper, systems-based investigation into genetics, lifestyle, nutrition, environment, and stress, and how they interact to influence your health.

Using advanced functional lab testing, detailed health histories, and integrative, systems-based analysis, we identify underlying imbalances in areas such as gut health, environmental exposures, hormones, metabolism, immune function, and detoxification.

We then build a personalized plan designed to restore function, not just manage symptoms. That's integrative and functional medicine, done right.‍

Conditions

Areas We Serve

Premier Integrative & Functional Medicine is based in Placentia, CA, and proudly serves patients throughout Orange County and the greater Southern California region, with both in-person and telehealth visits available. You can find our prices here.

Functional Medicine in Placentia: Our clinic is located at 151 N. Kraemer Blvd #115, right in the heart of Placentia. Local patients can visit us in person for full functional and integrative medicine evaluations, lab testing, and hands-on therapies like HBOT, infrared sauna, and halotherapy.

Functional Medicine in Fullerton: Just minutes from downtown Fullerton, we help patients throughout the city get to the root cause of chronic conditions like autoimmune disease, gut health issues, and hormone imbalances — without relying on medication alone.

Functional Medicine in Anaheim: We regularly see patients from Anaheim seeking a more integrative, root-cause approach to conditions like thyroid dysfunction, chronic fatigue, and inflammatory disorders that haven't improved with conventional care.

Functional Medicine in Orange County: Beyond Fullerton, Anaheim, and Placentia, we serve patients across Orange County, including Yorba Linda, Brea, Santa Ana, Orange, and Huntington Beach, as well as Los Angeles County, Riverside County, and San Diego. For patients further away, we offer full telehealth consultations.‍ ‍

Chronic diseases are the leading cause of  death and disability in the United States.

133 Million people in the united states have at least one chronic disease
45% of the population have chronic conditions
7 out of 10 deaths in the united states are caused by chronic diseases

These are pretty dismal and disappointing stats. And these are now outdated stats. We are spending more and more on “healthcare,” yet we are getting sicker by the day. The U.S. is not even in the top 10 of the world's healthiest countries, yet we spend the most amount of money. It doesn’t take a genius to figure out we are doing something wrong.

Functional Medicine FAQs

Reviewed by Dr. Craig Mortensen, DC, IFMCP, QME | Updated: June 2025

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Over 5000 Clients Worldwide

Rated 4.8 stars { .2 werent even patients ;-) }

The Health of the U.S. has only gotten worse - And functional medicine can help. IF you let it.

Just to drive the point home and scare you just a little bit more here are some more sobering stats. Keep in mind that this is not our fault (you as an individual). Ad a society, YES!

But that not to say that you dont have a part in your health, you absolutely do. Often we have clients ask “why me?”

What they are really asking is “Did I do something to cause this?”

And honestly, sometimes the answer is yes, they did to something to cause it.

But, more often than naught the real answer is that they didn’t do anything to prevent it. They didnt cause it but they may have allowed it. Whether its letting in too much stress, not exercising, getting exposed to more toxins than they should have. Generally its a small accumulation of stuff that we did or didn’t do that adds up and causes a bigger problem.

It’s kind of like death by a thousand needles.

  • As of 2023, ~76% of U.S. adults report at least one chronic condition, and ~51% have multiple chronic conditions (e.g., diabetes, heart disease, COPD, high blood pressure, obesity, depression). These rates have increased significantly over the past decade. LINK

  • Compared to similar wealthy nations, the U.S. has much higher rates of obesity (~2.4×), diabetes (~2×), asthma (~1.7×), and depression (~1.3×) — which contributes to worse outcomes and lower life expectancy LINK

  • Projections for Life expectancy are predicting the U.S. may drop from ~80th in the world to ~108th by 2050. LINK

  • “Health” care as of 2022 accounts for 18% of US GDP = $4.9 trilliion - Thats with a “T”. LINK

  • Of that 4.9T, 90% of it is for people with chronic and mental health issues. LINK

A person with short curly hair wearing a dark North Face jacket is walking through a field of tall, golden grass under a cloudy sky with mountains in the distance.

Symptoms are our body's way of telling us something is wrong.

Premier Integrative Functional Medicine is proud to be one of the foremost authorities on providing patients with quality, personalized healthcare that truly addresses the underlying causes of disease. We are not trying to cover up symptoms of disease.

“My advice is to not cover up the body's means of communication (symptoms),

but to look at the root causes and fix those.”

Integrated Functional Medicine looks to get at the root causes of disease and illness by addressing each person individually. Each patient will go through a very thorough history and physical exam (our patients always spend an hour with the doctor). The history and exam will then guide us to which functional testing should be performed. By combining the individual patients history, physical examination and functional medicine testing this will guide us in the treatment protocol for that individual.

A checklist on a clipboard with several items and checkmarks next to each.

 Take a closer look at our FAQ section.

It may answer many of the burning questions you have about health, our practice, and if we can help you.

Proudly serving patients throughout Orange County and broader Southern California, including Fullerton, Anaheim, Placentia, Yorba Linda, Brea, Santa Ana, Orange, Huntington Beach, Diamond Bar, Roland Heights, Corona, and Riverside. We also offer online visits, making our care accessible to patients throughout the United States.

 Our Physical Location

151 N. Kraemer Blvd #115

Placentia, CA 92870

Online appointments available

In person, phone and online appointments available

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Many doctors will address sickness only within that specific function of the body, and not address its myriad other systems. Unfortunately, it's not that simple. We must always evaluate how one reaction may have a beneficial or detrimental reaction somewhere else in the body. The body is not a closed set of systems; it is multiple systems working in concert.

The body is very adaptable and able to compensate for many different things for a long time. However, after so long the body is no longer able to adapt. At this point, the body, mind, and/or soul become sick.

 Book your consultation appointment today!