California Longevity & Vitality Medical Institute is a premier age management and preventive medicine practice in San Francisco, California, serving patients who seek science-based approaches to living longer and feeling their best. Founded by the pioneering Dr. Harvey S. Bartnof, MD, the Institute is now led by Medical Director Dr. Rachel Frankel Meek, DO, MPH — a board-certified physician with more than two decades of experience in age management medicine, preventive care, and bioidentical hormone therapy. Located in San Francisco's Union Square district at 450 Sutter Street, Suite 2310, the Institute offers proven longevity interventions designed to help patients achieve optimal health, vitality, and well-being at every stage of life. The practice's philosophy centers on addressing root causes rather than masking symptoms — using detailed laboratory analysis, individualized treatment planning, and ongoing monitoring to help each patient age on their own terms.

About the Physician

A San Francisco native, Dr. Rachel Frankel Meek earned her BS in Biology from UC San Diego and her Master of Public Health from UC Berkeley before completing her Doctor of Osteopathic Medicine at the College of Osteopathic Medicine of the Pacific at Western University of Health Sciences. She trained in family medicine and pediatrics at Kaiser Hospital in Oakland and subsequently spent more than 13 years as a Partner with Kaiser Permanente Medical Group — building deep expertise in comprehensive primary and preventive care. In 2009, Dr. Meek completed the advanced Age Management Medicine training program at Cenegenics, earning board certification in this specialty. She is also a certified BioTe® Medical practitioner trained in bioidentical hormone pellet therapy. Dr. Meek brings a thorough, integrative approach: combining advanced laboratory diagnostics, lifestyle medicine, and hormone optimization to create individualized plans that target the biological mechanisms of aging at their source.

Services Offered

• Age Management Medicine — a proactive, evidence-based approach to aging that optimizes hormones, nutrition, fitness, and cognition to extend healthspan and prevent age-related decline.
• Andropause Treatment — targeted hormone optimization for men experiencing fatigue, reduced libido, muscle loss, mood changes, or other signs of declining testosterone and hormonal balance.
• Menopause Treatment — personalized hormone balancing for perimenopausal and postmenopausal women to alleviate symptoms and reduce long-term cardiovascular, bone, and cognitive health risks.
• Somatopause & Growth Hormone Deficiency — evaluation and treatment of adult growth hormone deficiency to restore body composition, energy, metabolism, and quality of life.
• Telomere & Telomerase Activation — cutting-edge analysis and targeted interventions focused on telomere health — the cellular aging clock — to support longevity at the molecular level.
• Bioidentical Hormone Therapy (BioTe®) — precision-dosed bioidentical hormone pellet therapy delivering consistent, stable hormone levels for sustained energy, mood, and vitality.
• Preventive Medicine — advanced biomarker panels, evidence-based screening protocols, and risk stratification to detect disease early and optimize long-term health outcomes.
• Diet & Nutrition — individualized nutritional planning and supplementation strategies tailored to support metabolic health, hormone balance, and longevity goals.

What to Expect

California Longevity & Vitality Medical Institute offers an unhurried, personalized experience — new patients undergo comprehensive laboratory work and a thorough consultation with Dr. Meek before receiving a customized treatment plan. Located at 450 Sutter Street, Suite 2310, San Francisco, CA 94108. Call (415) 619-3021 for appointments or (415) 986-1300 for general inquiries. Hours: Monday, Tuesday, Thursday, and Friday, 9am–5pm. Visit longevitymd.net to learn more.