San Francisco Golden Gate Bridge and cityscape at sunset

David DeRosa, DC

Dr. David DeRosa graduated from Southern Connecticut State University in 1995 and Life University in 2000 with his Doctor of Chiropractic degree. After coming across the work that Dr. Freddie Ulan was doing in providing a nutritional component to chiropractic practices, he enrolled in the Advanced Clinical Training program at UNS to study Nutrition Response Testing®.

“Since my training in Nutrition Response Testing in 2009, I have the confidence to handle any case that comes into my practice. My practice has become the healing center that I originally envisioned and I am excited to share this knowledge with other healers. This One Day Event I am conducting is a perfect place to get started on learning how Nutrition Response Testing can transform the future of your practice.”

Samuel Zeiler, MS CNC

Sam Zeiler is the Director of the Robust Life Center in Seattle. He has a thriving practice with over 25 years of experience helping thousands of individuals achieve vibrant health.

He earned his Master’s Degree in Clinical Nutrition and Counseling from Donsbach University in 1982 with a BS in Nutrition. While seeking improved techniques and systems, he discovered Nutrition Response Testing®.  He enrolled and graduated as an Advanced Clinical Training Master in December 2008.

“Our physical bodies are made of basic elements in nature that promote the growth and survival of living things. The need for proper nutrition is of paramount importance in serving the body to restore full function with the ability to thrive. Nutrition Response Testing provides the most accurate way to define the specific nutrition that the body requires in a priority manner to maximize restorative power. It has been my joyful obligation to interest and instruct many practitioners in this work who now use the same techniques to successfully help their patients.”

John St. John, DC

Dr. St. John is owner of Chagrin Natural Healgth Clinic in Chagrin Falls, OH, in the Cleveland area.

Dr. St. John says “I was a busy three sport athlete in high school and was lucky enough to earn a full tuition baseball scholarship to pitch at Boston College in 1989 and later in my college career at Kent. Early in my high school career I was plagued with shoulder and elbow problems but I always knew where to get help. My pain was gone and my body was re-balanced usually after a treatment or two and I rarely had to miss any action. My doctor would also recommend dietary changes and whole food supplements to support my body as well. This was my first experience with any type of alternative healthcare and it worked for me every time! Needless to say I became a strong believer in these methods of treatment because I experienced such consistent results.

“When I reached my early twenties, I had the experience of taking care of my father, whose health was failing due to complications of diabetes. It was difficult geographically to get him to anyone other than a local conventional doctor and, at the time, I had only a fraction of the knowledge that I have now about the many effective drug-free therapies that could have benefited him. His condition slowly deteriorated into failing kidneys and congestive heart failure…all while on a steady regimen of 12 medications! This experience was the catalyst that began my quest in finding an effective approach to handling this and most other states of chronic disease. I believe I have found this approach. After hours upon hours of advanced clinical training with some of the best clinicians in natural healthcare along with clinical experience, I have accumulated quite a sum of useful knowledge and skill to help others, and I will continue to do so because it’s fun for me!”

Wayne Kohan, DC, CCN

Dr. Kohan graduated from Bloomfield College with a bachelor degree in life sciences. He then continued on to New York Chiropractic College and obtained a Doctor of Chiropractic degree in 1989. In 1990 he went into private practice in Wayne, NJ. The focus of his practice has always been on helping people overcome their pain, immobility and loss of function naturally through chiropractic treatment.

In 1994 Dr. Kohan discovered Nutrition Response Testing®, which helped him handle a personal health issue. He started to take training seminars on this nutritional evaluation technique in 1994. Also he started taking more nutrition education courses and seminars. In 2000 he earned his certification as a Board Certified Clinical Nutritionist or CCN. He also obtained a Diplomate in Nutrition from the American Clinical Board of Nutrition or DACBN.

In 2007, Dr. Kohan moved to Phoenix and opened the Natural Health Improvement Center, focusing on Nutrition Response Testing. Then in June of 2009 he became 1 of only 300 healthcare providers in the country to become an advanced clinical training graduate in Nutrition Response Testing, an accomplishment of which he is very proud.

Serge Gregoire, PhD, CCH

Serge Gregoire graduated with a doctorate in nutrition from McGill University in Canada in 2006. He also completed 7-year post-doctoral training at Harvard Medical School where he studied the impact of fat as it relates to heart disease (his forthcoming book with Berger’s Publishers in Canada covers the subject). He is a certified herbalist through the Australian College of Phytotherapy. Upon graduation from McGill, he immediately began building his practice and sought a workable system with which he could apply his knowledge. He discovered Ulan Nutritional Systems in 2007 and graduated the Advanced Clinical Training in Nutrition Response Testing® in 2009.

“Nutrition Response Testing is an amazing system of knowledge and application which helps patients improve their health faster and better than anything I have ever seen. The so-called “difficult cases” have become easy and Nutrition Response Testing is now the basis of my holistic practice (Acupuncture and Chiropractic) and has assisted the growth of my practice tremendously.”

Douglas Mills, DC

Dr. Douglas C. Mills, DC graduated from Los Angeles College of Chiropractic and has been in private practice since 1992. He is a 2018 graduate of the Nutrition Response Testing Advanced Clinical Training Program founded by Dr. Freddie Ulan, DC, CCN and is a Certified Nutrition Response Testing® Instructor. His private practice is in San Diego, CA where he helps many patients achieve major improvements in their health including his toughest of cases! He has a passion for getting sick people well with nutrition and is highly committed to spreading the word and educating other practitioners.

“I have been able to help so many more stuck cases fully recover that needed more than Chiropractic! Nutrition Response Testing has enabled me to become the practitioner of health that I had always dreamed of! I now feel confident that there is nothing that I can’t handle in a patient’s condition, no matter what it is!!”

Mark Holtsschlag, DC, DACBN

Dr. Mark is a 1981 honors graduate of Palmer College of Chiropractic in Davenport, IA. He attended the University of Illinois Pre-Med Program and decided that drugs and surgery was not something he wanted to be involved with. After completing chiropractic college, he attended numerous seminars and received a board certification in nutrition and an advanced proficiency rating in Activator Methods adjusting technique.

Realizing the need for an effective nutritional system, he searched and found Ulan Nutritional Systems. He enrolled in the Nutrition Response Testing® program in February 2012 and graduated in 2013.

“Dr. DD Palmer was very aware of the nutritional needs of the body to heal and stabilize subluxation.  Environmental toxins and nutritional deficiencies were actually the cause of said subluxation. My desire to share Nutrition Response Testing stems from this very truism.  Through my 30+ plus years as a chiropractor, I realized that the nutritional component in chiropractic is vital.  And while other nutrition approaches exist, none comes even close to the results that we are getting with Nutrition Response Testing. In addition to daily miracles from Nutrition Response Testing, we also have learned the management techniques which have helped us to grow and track our growth.  We are seeing 3 times the number of patients from the time we began and with less stress.”

Llana Call-Smith, DC

Dr. Call-Smith earned her bachelor’s degree in biology/chemistry in 1999 from Milligan College in Tennessee. She earned her chiropractic degree, magna cum laude, in 2005 from Logan Chiropractic College in Missouri. Dr. Call-Smith is a member of the Christian Chiropractors Association as well as the North Carolina Chiropractic Association. Dr. Call-Smith opened her first private practice in the town of Brookport, Illinois in 2005 where she served patients from Illinois and Western Kentucky.

She has studied the advanced breakthroughs in all aspects of clinical nutrition ranging from the in-depth analysis of specific nutritional deficiencies to successful continued patient care. Dr. Call-Smith is one of a limited number of health practitioners who have graduated a very extensive Advanced Clinical Training program in Nutrition Response Testing®. Nutrition Response Testing is used by thousands of health practitioners of all types and specialties across the United States including osteopaths, MDs, nutritionists, chiropractors, massage therapists and acupuncturists.

“Nutrition Response Testing allowed me to find that missing piece I was looking for as a chiropractor.  I had some patients that would just not get the results I expected with chiropractic that finally got better when we addressed the underlying nutritional issue.  I now have the tools to know which patients are going to be ‘difficult chiropractic cases’ and can get them started on a nutrition program to fix the nutritional imbalances along with chiropractic adjustments and we get awesome results! Nutrition Response Testing has improved my own health dramatically and allowed me to serve my patients even more.”

Thomas Lo, DC

A native of Hong Kong, Dr. Lo has been serving the Crofton/Bowie community since 1984 and expanded to the Frederick area in April 2017. He graduated from the National College of Chiropractic in Lombard, IL in 1983. Dr. Lo is a member of The Maryland Chiropractic Association and The American Chiropractic Association. He is a diplomat of The American Academy of Pain Management, a fellow of The International Academy of Clinical Acupuncture and a fellow of The American Association of Integrative Medicine.

Dr. Lo is currently the attending chiropractor for the Ballet Theater of Maryland and he was the attending chiropractor for the World’s Greatest Athlete Decathlon Club in the 2004 Olympic Trial. Over the 34 years of his solo practice, he has received numerous proficiency certifications, including sports injuries, advanced activator methods, environmental stress management, low-level cold laser therapy and an advanced certification in clinical nutrition.

Dr. Lo’s passion is in Nutrition Response Testing and he runs a large Nutrition Response Testing Program at his practice. It allows him to pinpoint the cause of your problem with laser sharp accuracy and provide you with your personalized, specific nutrition solution. He knows that if five people come in with symptoms and diagnosis of Hypothyroidism, each one of them may have a different treatment program, it depends on the cause.

Sarah Wilkinson, DC

Dr. Wilkinson graduated from Eastern Michigan University in 2007 with e Bachelor’s Degree in Biochemistry and a Doctorate of Chiropractic from Life University in 2012. She came across Nutrition Response Testing back in 2010 and realized that this is what she needed to truly help her patients.

“Initially I had just opened my practice and was seeing only chiropractic patients. I slowly added nutrition patients as I began my Advanced Clinical Training (ACT) in Nutrition Response Testing®. After finishing ACT 1, I saw about 5 patients per week and now after completing ACT 9, I see about 55-60 patients per week just for nutrition.

I feel there is a definite need for Nutrition Response Testing within my community and my practice. It has improved not only the quality of my health but my family and my patient’s health. I also am certified by the Animal Veterinary Chiropractic Association and work with animals and see how this technology has improved their health as well. I knew that not only did I want to pursue my dream of working with animals but now I wanted to care for people too! Educating people on how to care of themselves and their kids, both 2 legged and 4 legged, in a natural way, has definitely become my passion. I think it is important to get the word out on how amazing our bodies are when given the right tools. We can actually heal ourselves without all the unnecessary medications and surgeries.”