Dr Ron Rothenberg

Medical Director

As a pioneer in the field of Preventive and Regenerative Medicine, Ron Rothenberg, M.D., (age 65) was among the first group of physicians to be recognized for his expertise in this rapidly emerging field. The 10th M.D. in the world to be recognized by the American Board of Anti-Aging and Regenerative Medicine, Ron Rothenberg, MD founded California HealthSpan Institute in Encinitas, California in 1998 with a commitment to transform our understanding of preventive and regenerative medicine. Challenging traditional medicine’s approach, California HealthSpan Institute’s mission is to create a paradigm shift in the way we view the decline of fitness, cognition and quality of life: treat the cause. California HealthSpan now treats and designs custom programs for patients in California and worldwide. (From every continent except Antarctica).

Dr. Rothenberg has always challenged traditional medicine’s ability to embrace new paradigms. After graduating from Columbia University, College of Physicians and Surgeons, in 1970, Dr. Rothenberg practiced medicine and studied indigenous healing in the Amazon Basin for several years. He then performed his residency in Emergency Medicine at Los Angeles County-USC Medical Center. At the time, the specialty of Emergency Medicine (like Anti-Aging and Regenerative Medicine) was not widely recognized by the medical community. Dr. Rothenberg was passionate about the field, and went on to teach and practice Emergency Medicine. He is a former Full Clinical Professor of Preventive and Family Medicine at University of California, San Diego School of Medicine.

To be ready to offer patients the advantages of the next paradigm shift in medicine California HealthSpan Institute became the first collection center for Neostem where healthy people could collect and bank their own adult stem cells for future use. As a member of the Neostem Medical Advisory Board Dr. Rothenberg regularly meets with world leaders in the stem cell field.

Dr. Rothenberg has educated over 25,000 physicians who have attended his continuing education seminars. As the creator and director of the Postgraduate Institute for Primary and Emergency Physicians at University of California, San Diego, School of Medicine he helped create the specialty of Emergency Medicine by training physicians as this field emerged. Over the past 10 years he lectured worldwide on Preventive and Regenerative Medicine, Hormone Optimization and Stem Cells. In addition to his work in the field of Anti-Aging and Regenerative medicine, Dr. Rothenberg remains an Attending Physician and at Scripps Memorial Hospital in Encinitas, California. With the health and vitality that he had when he was much younger, Ron Rothenberg continues to enjoy his other passions: his wife, his three children, surfing, skiing, mountain biking, and Baja California.

Kris Hart, MN, FNP, R.N.-C.

Associate Medical Director

Ms. Hart has been a health care provider since the 1970’s. Ms. Hart has a Master’s Degree in Nursing with Family Practice Nurse Practitioner certification from UCLA. She currently is working in Family Practice, Emergency Medicine and Preventive/Regenerative Medicine. She has completed the Certification and Fellowship program in Preventive/Regenerative/Functional medicine as an allied health professional. Ms. Hart’s background in family practice, critical care and emergency medicine and natural hormone optimization is extensive. Ms Hart is married and has 5 children and 3 grandchildren and enjoys camping and spending time with her family.

Coreen Reinhart


Coreen Reinhart is widely recognized for her expertise as a Nutrition Consultant and Wellness Coach. She has worked in the nutrition, fitness and weight-loss field since 1987. She specializes in designing individual nutrition programs that teach clients to focus on themselves and listen to their bodies.
Coreen believes that improving health is an individual process, and once clients understand what their bodies need and why they are different from everybody else, change is more readily accepted. She educates and support a variety of needs including wellness, fitness and balanced living. Being “Sports Nutrition Certified,” Coreen enjoys working with athletes (professional and recreational) to help them achieve optimum health and the edge they are looking for. She has authored monthly columns and appeared weekly on a major Canadian radio show. Coreen graduated from the University of Manitoba in Canada with a major in Food and Nutrition in 1986. She is a Certified Clinical Nutritionist.

Jill Suess, L.Ac


Jill Suess, L.Ac. is a California state licensed acupuncturist. She graduated from Pacific College of Oriental Medicine in San Diego in 1999. Upon graduating Jill extended her studies, interning in a hospital in central China. For the last ten years she has maintained a thriving practice at Peak Performance Holistic Therapies in Ocean Beach. In 2004, Jill joined Dr Rothenbergs practice to complement his vision of combining western and eastern medicine. Because Chinese medicine works naturally with the body to restore “chi” or energy, it is a perfect addition to this preventive medicine practice. When “chi” or energy is blocked a variety of symptoms may present. Blockages can come from many diferent sources: physical, mental and/or emotional. This includes stress, poor diet, hormone imbalances, excess of emotions (anger, fear, joy) lack of sleep, injury and disease. Mirco thin needles are inserted to specific acupoints to help balance your energy. Depending on how long your body has been out of balance or alignment and how long the condition has been present will determine the frequency and number of treatments needed. Typically you can expect to come in for a series of 6-8 weekly treatments. The patients that come in to see us are focused on their long term health and creating a preventative healthcare plan. Our goal is to keep you in balance with a monthly acupuncture treatment to maintain balance and flow in your life and have optimum health through each new year. Jill has a very caring compasssionate nature and her mission is to educate her patients and work with them to create optimal wellness. Her passion is to help others and make a difference in their lives.

Doris Asombrado


Doris Asombrado has been a Family Nurse Practitioner for 13 years and is certified in Family Practice under the American Nurse Credentialing Center. She completed her bachelor’s degree in Nursing from the University of San Francisco in 1988, and her master’s degree in Nursing from Samuel Merritt College in 1997. After 10 years of Family Practice, Doe developed an interest in Anti-aging Medicine and is a certified Diplomate of Anti-Aging Medicine for Health Practitioners from the American Academy of Anti-Aging Medicine as of December 2007. In addition to her interest in Anti-Aging, Doe also has several years experience in Aesthetic Medicine. She has 5 years of experience in the application of cosmetic injections for facial rejuvenation, and is certified by Allergan (with the University of Southern Florida) for the cosmetic application of Botox, and by Medicis for the cosmetic application of Dysport and Restylane. Doe has several years of experience on the use of lasers for cosmetic use such as the Luminus Laser and the Harmony AFT for photo facials, laser hair removal, and spider veins. She also has experience in the cosmetic application of sclerotherapy for the reduction in spider veins and has experience and the ability to prescribe custom compounded cosmeceuticals for wrinkle reduction, hyperpigmentation, and overall skin rejuvenation. She is currently pursuing her Fellowship in Anti-Aging and Regenerative Medicine and will graduate in Dec 2011.

Liz Trejo

Aesthetician and Massage Therapist

Liz is a licensed aesthetician and massage therapist with 13 years of experience in facials and massage therapy. GM Collin Skin Care for the very best in clinical facials and PCA Chemical Peels, Botinol, Sea C Spa, Hydra Lift and more for your anti- aging needs. While you are balancing the inside it’s time to take care of the outside via massage therapy to balance the body and mind. Liz specializes in therapeutic massage. These treatments support your commitment to healthy living and promote ultimate wellness. Look and feel your very best by incorporating regular facials and massage into your anti-aging program.