California HealthSpan Institute
California HealthSpan Institute
  • Home
  • Hormone Therapy Program
    • Hormone Therapy
    • Treatment Program
    • Program benefits
    • Supplements Micronutrient
    • DNA Teleomeres
    • NAD +
    • FAQ
    • Synthetic vs. Bio-Hormone
  • Events & Presentations
    • Upcoming Events
    • News
    • Presentations & Webinars
    • Educational Videos
  • References & Citations
    • Recommended Reading
    • Cortisol
    • DHEA
    • Estrogen
    • Growth Hormone
    • Melatonin
    • Pregnenlone
    • Progesterone
    • Testosterone
    • Thyroid
  • Team of experts
  • Contact Us
  • Privacy Policy
  • More
    • Home
    • Hormone Therapy Program
      • Hormone Therapy
      • Treatment Program
      • Program benefits
      • Supplements Micronutrient
      • DNA Teleomeres
      • NAD +
      • FAQ
      • Synthetic vs. Bio-Hormone
    • Events & Presentations
      • Upcoming Events
      • News
      • Presentations & Webinars
      • Educational Videos
    • References & Citations
      • Recommended Reading
      • Cortisol
      • DHEA
      • Estrogen
      • Growth Hormone
      • Melatonin
      • Pregnenlone
      • Progesterone
      • Testosterone
      • Thyroid
    • Team of experts
    • Contact Us
    • Privacy Policy

  • Home
  • Hormone Therapy Program
    • Hormone Therapy
    • Treatment Program
    • Program benefits
    • Supplements Micronutrient
    • DNA Teleomeres
    • NAD +
    • FAQ
    • Synthetic vs. Bio-Hormone
  • Events & Presentations
    • Upcoming Events
    • News
    • Presentations & Webinars
    • Educational Videos
  • References & Citations
    • Recommended Reading
    • Cortisol
    • DHEA
    • Estrogen
    • Growth Hormone
    • Melatonin
    • Pregnenlone
    • Progesterone
    • Testosterone
    • Thyroid
  • Team of experts
  • Contact Us
  • Privacy Policy

Team of Experts

We are committed to your Well-being and Vitality

Ron Rothenberg M.D. Medical Director

As a pioneer in the field of Preventive and Regenerative Medicine, Ron Rothenberg, M.D., 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, 

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.

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.

Email - Ron Rothenberg MD

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 5 grandchildren and enjoys camping and spending time with her family.

Email - Kris Hart

Tracey Fabian Director of Patient Services

 Tracey is an accomplished Medical Assistant/Patient Coordinator, assisting patients with scheduling, appointments Labs, Refill of medications, ordering supplements. 

Email - Tracey

Coreen Rienhart Nutritionist 858-395-0936

 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. 

website: www.yourlifelonghealth.com

Email - Coreen

Liz Trejo New Patient Coordinator/Financial Billing Services 619-933-2671

 Liz is also licensed esthetician and massage therapist/Certified Lymphedema Therapist with over 25 years of experience in facials and massage therapy. GM Collin Skin Care/GMC Medical for the very best in clinical facials and Chemical Peels, Botinol, Sea C Spa, Hydra Lift and more for your anti-aging need's. 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. Liz uses Young Living Essential Oils in my treatments and for Natural Remedies that only Aromatherapy can bring. Y.L. oils are therapeutic grade can de-stress & enhance your environment. 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. 

website: www.liztrejo.com

Email - Liz

Instagram

Copyright © 2025 Ehealth - All Rights Reserved.

Powered by

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

Accept