California Healthspan Institute
An Encinitas clinic for preventive and regenerative medicine.
Contact Information
About
Care programs draw on medical literature, clinical experience, laboratory results, patient health histories, and stated goals. California HealthSpan Institute schedules patient visits on Tuesdays and Wednesdays and uses Mondays and Thursdays for office work performed from a distance. It serves patients from California and countries on six continents.
Services
- Bioidentical hormone therapy
- Peptide hormone therapy
- DNA and telomere science
- Telomerase activation
- NAD+ therapy
- Supplements and micronutrients
- Nutrition programs
- Wellness coaching
- Facials
- Chemical peels
- Therapeutic massage
Team
Checked Date: Oct 16, 2026Ron Rothenberg, M.D.
Medical Director
Earned an MD from Columbia and board recognition in anti-aging and regenerative medicine; taught at UC San Diego.
Kris Hart
MN, FNP, R.N.-C., Associate Medical Director
Holds an MN from UCLA with family nurse practitioner certification and training in preventive, regenerative, and functional medicine.
Coreen Reinhart
Certified Clinical Nutritionist, Sports Nutrition Certified
Has worked in nutrition, fitness, and weight loss since 1987 and holds a degree in food and nutrition.
Liz Trejo
Licensed Esthetician, Massage Therapist, Certified Lymphedema Therapist
Has over 25 years of experience in facials and massage therapy, with a focus on therapeutic massage.
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