Dr. Mortensen is one of the best alternative healthcare practitioners I have had the pleasure of working with. He has helped me tremendously through debilitating gut and health issues. Before finding Premier IFM, I had visited several conventional doctors but was unable to get clear answers. Dr. Mortensen took the time to investigate further by ordering comprehensive bloodwork, gut testing, and mold testing, which revealed longstanding gut dysbiosis and elevated mycotoxins. With his guidance, I began addressing these underlying issues and experienced meaningful improvements in my overall health. I want to be clear that I had preexisting gallbladder problems before becoming his patient. I eventually discovered that my gallbladder was severely infected and required emergency removal. This was not caused by any of the therapies or supplements Dr. Mortensen recommended. In fact, I believe his care helped strengthen and support my body leading up to the emergency. The ER doctors were amazed by how healthy my bloodwork looked before the procedure, despite the severity of the infection. I am incredibly grateful for Dr. Mortensen's knowledge, thoroughness, and dedication. His recommendations played an important role in improving my health and helping my body handle a serious medical emergency. I highly recommend him to anyone searching for a practitioner who genuinely listens and works to uncover the root causes of their health concerns. read more

Dr. Mortensen helped me a lot with my health over the years. After years of debilitating pain and suffering he uncovered the root of my ailment and helped me on my journey to achieving optimal health. read more

Not doctors!! I highly recommend you do NOT waste any money here. They are highly unethical, unprofessional and will trick you into spending hundreds of dollars on tests you'll never see results for. They'll hold test results hostage until you spend more money in phone calls and zoom visits for the doctors to read you the results. Beware! read more

I started seeing Dr. Craig Mortenson around November of 2024. I was having all kinds of weird symptoms and my body was all out of wack. My blood pressure and cholesterol was up, my hormones were down, and I was having weird panic attacks that I've never had before. After trying a few things that made me feel better but not great, my test results came back as having leaky gut in March of 2025. He asked me to get on a strict protein diet and gave me a few supplements, after about 3 months I was feeling better but still had to maintain my diet and supplements and now at month 5 I'm feeling great again and all my tests are stable. When my primary physicians only prescribed me medication to mask the symptoms Dr. Mortenson dug deep to find out what was causing these issues. I am still on the journey of healing my gut and stabilizing my gut bacteria but I can honestly say I feel much better and almost back to normal. I will never regret making the decision to call Dr. Mortensons office and don't even know how I would function if I just gave in and took the meds my primary was giving me and thought that was all that could be done. This team is amazing and you should never just settle with your health! read more

I am so grateful to Dr Craig's and his office. My life has changed so much since I started seeing him. I am a Covid long hauler since July 2022. I have suffered from horrific multiple systemic issues. I tried everything from western medicine, a Chinese medicine natural path, massage, chiropractors, and the list of money expenses goes on. When I came to Dr Craig back in January I told him he was my last hope. Although some of my symptoms got mildly better I still had burning skin in my ribs and torso area, the only way I can explain it is it felt like someone poured battery acid inside me. My gut was still a mess and kept flaring to the point where I continuously had to lay down throughout the day. When I would run an errand I would have to come home to rest instantly. My anxiety and nervous system was still at a high level. My hair was shedding like crazy. I was also limited to specific foods because I was having mast cell and histamine issues from my destroyed microbiome after my Covid infection. With the help of Dr Craig he ran a blood test and we sat down and he pin pointed everything that was happening in my body. He put me on quite a few supplements. One of the questions I asked him before I left that day is "Do you think I'll be able to work again in the next 6 mos?" He replied yes! When I left I still believed I would be disabled and not be able to work. Well it's now 6 mos later and I am actively interviewing for a job. My anxiety and nerves have settled. I'm getting a good nights sleep every night. The burning has faded tremendously. I'm eating a wider variety and diversity of foods with no reactions. I was 115lbs and underweight and now I'm back to my regular 130lbs. My hair has stopped falling out and is growing again. My gut is healing ‍.... I have shed tears of gratitude that God finally led me to a person that could help me. I am still on a lot of supplements but it's been well worth every penny and the confidence that my health is returning to normal. I'm taking a vacation next week and Dr Craig gave me suggestions of what I may need while I'm in Mexico which makes me confident I will be just fine. I cannot believe this journey and how tough it has been to get to this point. Dr Craig knows more than my primary doctor and that says a lot. I no longer have to take a lot of prescription meds although I'm still on two but the goal is to get off of them. Moving forward the first person I am going to see is Dr Craig if by chance something happens with my immune system again. He got my health back to 85% in 6 mos and I was pretty bad off. I have been sending other long haulers to him in my long haul communities on social media because the only way out of this mess is functional medicine. From my research and experience from others the only ones recovering are on a functional med protocol. Thank you thank you thank you Dr Craig for helping me in my recovery. I'm slowly getting my life back read more

Premier IFM - Integrative Functional Medicine - I was able to be present to see my daughter graduate May 28, 2024 - Naturopathic/Holistic Near Me - Placentia, California

See all

I've been trying to figure out my cyclical fatigue issues for 5 years and after exhausting Kaiser Permanente's testing and specialists, I pursued functional medicine via yelp. IFM had great reviews so I made an appointment. Dr. Craig was nice, knowledgeable and easy to understand, thus the three stars. However, I had to minus one star for not healing me. Minus another star for making me worse. Long story short, my body was so weak that all the supplements he recommended made me worse than before. I paid for two appointments. Paid for labs. Paid for supplements. All out of pocket because I was so desperate to get better even though I have health insurance. I also felt he wasn't that responsive and wanted to wait for appointments to answer my questions. My first appointment was August of last year and I'm barely gaining the mental capacity to write this review 7 months later. I eventually found another practitioner (by word of mouth) a couple months ago who actually improved my health substantially so at least I know I'm not a lost cause. read more

See all

I found Dr Mortensen on mapquest I was tired of feeling sick all the time with not a proper diagnosis from my alopathic doctors. I believe in treating the body in a more natural way taking vitamins on my own for a while there was something missing. My first appointment with doctor was an hour long and I inmediatly felt doctos was truly lostening to all my long list of symptoms not only problems with my digestive system but also my hormones, chronic fatige, tingling on the jaw, vertigo, hip and leg pain and no energy. He listened to me and inmediately order some detailed blood tests that other doctor never did before. He recomended some vitamins and changes in my diet and exercises that I started inmediately . My next appointment my husband was there to listen to the lab test results too by doctors recommendation since the changes in our lifestyle will occur in for the better of the family and doctor understand how wmotional support is important I loved that my husband got to listened to all that my body was going through. Doctor Mortensen has the ability to explain in a simple way the tests results and why its important to do certain changes, he is very patient and respectful he shows another level of professionalism that I have never experienced before. He told us the commintment to the treatment would need it to be at leats two years to see the complete recovery I expected. I understood completely I was sick for so many years that is just normal to give my body the time to recover for all the bad things it went through and I know the natural way is always the better option since the regular medicine always gave me some side effects I did not want to go back to that again so I commited to the treatments. i had alot of bad bacteria in my gut. It did not past alot of time since I started to see some symptoms dissapear and I loved it. It encouraged me to continue with doctor's recommendations. I totally trust dr Mortensen to help you get to the root cause of your illness and of course I have the confidence to tell you that he has a gift to help people get better. God bless you doctor and thank you for helping me get more balance in my body, peace of mind and a higher conscience in taking care of my body in a natural way Diana Huerta read more

Great experience with Dr. Craig and you will have a great experience too. Just have the right expectation. Health is complicated and the idea of a "one pill solution" is a scam. The body takes time to heal. If you're willing to be patient and work with Dr. Craig you will see the results. read more

Dr Craig Mortensen Jr , he is fantastic ! I have been having issues for years that the hospital did not tell me how to treat it , or make it better ! Dr Craig has been helping me for 2 months and I am feeling much better ! I know I got a ways to go but at least I have hope now ! read more

I am over 1 year into working with Dr. Craig and I am so thankful for where I am at right now. I was told what I am doing should be up to a 2 year process, so I will write a more elaborate review when I am done, but where I am now is so much healthier than where I was a year ago. read more

What a godsend! From my first visit to Dr. Mortensen, I knew he was different and intuitive in a way my western medical doctors weren't. He listened patiently to every symptom and complaint (primarily debilitating undiagnosed nausea for 3 years) and looked me directly in the eye and told me he could help. He told the truth! We did testing that my regular physicians had never done and started down my road of healing. It's been 5 weeks and I can see myself starting to return and my energy and appetite are improving by leaps and bounds. I am so deeply grateful to Dr. Mortensen for his mind and his heart for patients and their recovery. He treats the whole human, not just a symptom. I cannot thank you enough. God bless you and those you love Dr. M. read more

If your having stomach issues, brain fog, food and chemical sensitivity, depression, anxiety just to name a few, Dr Mortensen is the Dr you want to see. He will diagnose you than the healing begins. His patient and takes time to listen to your concerns,when you need to ask questions you can text him and he'll text you back. I'm so happy I found Dr. Mortensen, I feel like myself again. The medical Drs. Did nothing for me but made me feel hopeless and feeling sicker than ever. Thank you Dr. Mortensen for leading me in the right direction to heal my body. The staff is the BEST, there warm, fry, and caring. Thank you All read more

After seeing many medical doctors about a number of seemingly chronic problems, with no apparent remedies and looking for an alternative to taking prescription drugs of any kind, I started seeing Dr. Craig in the Fall of 2017. After checking out the website for Premier IFM and watching some of Dr. Craig's posted You Tube informational videos, I decided to give him a try. The office is comfortable and all of his staff are very friendly. Dr. Craig is kind, professional and knowledgeable. From the very beginning of my treatment, he listened to my history in detail and then explained all the available options for care on my first visit. Since then, he is continuing to be the "Premier"provider (pun intended) of my desired alternative treatment. I am certainly a believer in Functional Medicine now and encourage anyone who is fed up with the lack of solutions in the medical community to make an appointment with Dr. Craig. You will not regret that decision. Many of my symptoms have since disappeared and I am feeling much better now than I have in years.....Thank you Dr. Craig for all you are doing to help me, as it is a ongoing process. read more

I truly belief in the concept of functional medicine in looking for and fixing the root cause of illnesses/diseases (two stars). However, I would suggest anyone with this belief to seek a practitioner who doesn't sell his/her own supplements. Dr. Craig may be very knowledgeable in his area of expertise but at the end of the day, I was left with the impression that he is more of a salesman than a practitioner who is more interested in selling you his extremely high priced 'supplements' which has the same identical ingredients as the ones you can purchase elsewhere at a fraction of costs then ensuring that you are on the most cost effective path to recovery. Dr. Craig's claim that he has no confidence in what other manufacturers' brand contain and his supplements are of much superior quality than others are words of a typical salesman. Here is the million dollar question; are his multi-vitamins, melatonin, turmeric, gaba, iodine/selenium, etc... truly that much better than others?? From my personal experience, the answer is NO. After two months on Dr. Craig's supplements, I can attest there is absolutely no difference compared to the ones I was taking before because there has been absolutely no improvement. I do realize Dr. Craig mentioned that 'my journey to recovery will be lengthy'. However, it was extremely disappointing and frustrating to see no improvements after two months. in fact, my symptoms were getting worst while religiously taking Dr. Craig's supplements. I knew something had to be done rather than keep going down this path of swallowing Dr. Craig's 'superior' supplements everyday. I was fortunate enough and very grateful to find another practitioner who was able to understand the root cause of my problem. One should never under estimate the importance of energy flow and blockage in your body which can cause many of the illnesses/diseases we all experience, which no blood test can detect. Through herbal medicine and clearing energy blockages by my new practitioner, I am seeing a noticeable improvement after 3 weeks (with no supplements). I truly believe I am on my journey to recovery. And no, this practitioner does not sell the herbs. He gives you a prescription to have it dispensed at the herbal store. Good luck in your journey to good health... read more

After having mysterious health issues since childhood, seeing many doctors, several of which made me think it was "all in my head." After various therapists, neurologists, specialists, etc...I have finally found help. I have struggled with a myriad of issues some of which include chronic pain, chronic fatigue, severe brain fog, and what goes with the former...depression, etc. Basically, I have been a mess and have not been able to function as a normal human being for about 20 years. After about 9 months of seeing Doctor Craig, I can truly say that I have NEVER in my life felt this good. I have energy for the first time ever. For the first time ever, I wake up in the morning with my mind and body feeling a "Bing of energy," rather than dread of facing a normal day. I used to not have enough energy to stand up and cook, or put away a load of laundry let alone go out and hang with friends. I actually feel excited about waking up living because I feel like I can finally keep up with my work, my kids, my home, and have enough energy left over to do somethings for myself. My brain fog has decreased so much that I can actually think clearly enough to plan and execute what I want and need to accomplish. For me, this is an unbelievable accomplishment. I'm no longer feeling like a shell of myself. I'm no longer telling my son, "I'm sorry honey I'm too tired to play." I was just telling my husband the other day "honey, stop for a second." I put my hands in the air and said "I cannot believe it. I am feeling so much joy and gratitude that I have the energy of a normal person!" We both laughed and cried and hugged. I highly recommend Dr. Craig. He is kind and patient and spends quality time at our visits listening to even the minute details of my health, but he will also tell me the tough things when I need to hear it. I have a lot of respect for this avenue of unique personalized healthcare. I think it's the future of optimal health. It's not a quick fix, and it does take some patience, persistence, and lifestyle changes. I always had hope and belief that I could have healing, but I did have my nagging doubts in the back of my mind. This was usually during bouts of feeling very sick, but I never thought it was possible for me to actually feel this good. read more

Very profesesional and caring. Communication is excellent-- Dr. Craig Mortensen explains problem and treatment very well.

Look no further. Doctor Craig Mortensen applies objective medical tests and superb knowledge in chemistry and beyond to solve health mysteries. And he does all this with a reasonable regimen. After decades of fatigue, chronic pain, depression, debilitating urinary tract issues, and digestive problems, he's pulling me out of the gutter and into the light. I've approached various traditional and alternative routes to heal in the past - both in the States and in foreign countries - with little results. I'm now starting my life at age 63 ... thanks to him! read more

My son has had severe stomach aches every 3-4 months for about 4 years randomly and seemed to me to be getting worse. I tried to narrow it down myself on what was causing them but had no luck. We went thru x-rays and blood draws with no answers. Instead of going thru invasive procedures with a gastroenterologist I found Premier IFM. We have been stomach ache free for about 6 months and it has been wonderful. I am so glad we went down the functional medicine route - it has helped not just my son but my whole family become healthier. read more

I am so glad that I was able to find Dr. Craig. I have had digestive issue symptoms for about 3-4 years, and I have never been able to control them. Dr. Craig helped me get to the point where my symptoms were under control. This did more than make me feel healthy, it gave me hope for the future. I have been able to be more social, and have had a lot more energy since my symptoms have been controlled. Dr. Craig has so much knowledge, and he answers all of the questions that I ask him (which are a lot). He also explains and even draws out his explanation for further understanding. Dr. Craig has put in a lot of time into being the best he can be for his patients, so be prepared to reap the healthy benefits that are about to come your way. read more

Dr. Craig is one of a kind in the wellness field! He explains everything so well, doesn't try to sell you things you don't need, and genuinely cares about improving your health and quality of life. I went from having chronic sleep issues, hormone problems, and all kinds of random pains, to sleeping 7-8 hours a night, enjoying much more even moods, and being able to exercise again. All without medications, which is the best part for me! read more

I have a medically complex 3-year-old (Austin) who has struggled with significant health issues his entire life. Some of those health issues include leaky gut, awful allergies, terrible eczema, constant congestion, and emerging neurological symptoms. I went to many western medicine doctors, doctors that are well respected and some who are head of departments at large children's hospital. None of them could help Austin. Other doctors were baffled and only gave medications that temporarily masked symptoms but ultimately made Austin worse in the long run. I found Dr. Mortensen and he has been such a blessing. I was literally blown away at the first appointment with him. He listened and everything that he said made sense. He has helped Austin so much when no other doctor could. We have been working with Dr. Mortensen for about 4 months and I am watching Austin's health transform. His leaky gut is healing, allergies are decreasing, eczema mostly gone, and congestion completely gone. Dr. Mortensen has been so patient in answering my questions and is always accessible by phone or email. Dr. Mortensen has worked so hard and is willing to think outside of the box. I am confident with some more time that my son will be completely healed and have the opportunity to live a happy and healthy life thanks to Dr. Mortensen. read more