Complete Evaluation
Comprehensive lab testing and a full medical assessment built around your history, symptoms, and goals.
Beverly Hills · Since 1997
Live Stronger.
Age Better.
Physician-guided bioidentical hormone replacement therapy and advanced anti-aging medicine, built around your labs, your symptoms, and your biology — by the Beverly Hills clinic that pioneered integrative HRT.
Bioidentical, plant-based hormones
Lab-guided protocols
25+ years of HRT experience
Personalized. Science-Backed. Results-Driven.
A Better Way to Age
Preventive Medicine Clinic of Beverly Hills brings together the best of proven medical and alternative therapies so you receive full value from the longer, healthier lifespan modern science makes possible. We have integrated bioidentical hormone replacement therapy with preventive medicine since 1997 — and we use only bioidentical, plant-based hormones designed to match what your body naturally produces.
Customized Therapy
Bioidentical hormone plans dosed to your biology — not a one-size-fits-all protocol.
Optimized Wellness
Support for energy, strength, libido, focus, sleep quality, metabolism, and mood.
Ongoing Support
Follow-up monitoring and adjustments keep your program safe, measured, and effective year-round.
Your Provider
Shirley Elzinga, CRNA, DC, CCSP, LAc
Founder and clinical director of Preventive Medicine Clinic of Beverly Hills, Dr. Elzinga is a Certified Registered Nurse Anesthetist, Doctor of Chiropractic, Certified Chiropractic Sports Physician, and Licensed Acupuncturist. She was an early champion of bioidentical hormone replacement therapy and has spent more than 25 years refining a truly integrative approach to hormone health and healthy aging.
CRNADoctor of ChiropracticCCSPLicensed Acupuncturist
"For patients with unique needs — we have unique solutions."
The Science
Why Hormone Optimization Matters
As hormones decline with age, many people experience lower energy, changes in body composition, reduced focus, disrupted sleep, low libido, and a general loss of vitality. Bioidentical hormones are molecularly identical to the hormones your body makes, so your body recognizes and uses them the same way. A properly supervised, lab-based program identifies imbalances and rebuilds a plan around objective markers — not guesswork.
Restore Vitality & Drive
Sharpen Focus & Mental Clarity
Build & Preserve Lean Muscle
Support Bone & Metabolic Health
Improve Sleep & Mood
Support Healthy, Active Aging
Explore Our Therapies
Therapies
Personalized Programs
Every program begins with an evaluation. Recommendations depend on your symptoms, lab results, health history, and provider review — including the latest evidence-based options in hormone and longevity medicine.
Men's Hormone Optimization (TRT)
Evaluation and bioidentical testosterone therapy for low energy, strength, libido, recovery, mood, and andropause (male menopause).
- Comprehensive hormone & metabolic bloodwork
- Provider-guided testosterone protocol
- Ongoing monitoring & adjustment
Women's Hormone Balance & Menopause
Bioidentical estrogen, progesterone, and testosterone support for perimenopause and menopause — hot flashes, sleep, mood, libido, and bone health.
- Customized BHRT review
- Symptom & timing-based assessment
- Cream, patch, or pellet options discussed
Peptide Therapy
Physician-supervised peptides such as growth-hormone secretagogues for recovery, body composition, and healthy-aging support.
- Sermorelin / CJC-1295 / Ipamorelin review
- Recovery & lean-mass support
- Provider recommendation required
Medical Weight Loss & GLP-1
Metabolic programs that may include GLP-1 therapies (semaglutide / tirzepatide) alongside nutrition and lifestyle guidance.
- Metabolic & appetite-hormone review
- GLP-1 candidacy evaluation
- Body-composition tracking
NAD+ & Longevity
Cellular-energy and longevity protocols, including NAD+ support, reviewed case-by-case with full medical oversight.
- Mitochondrial & energy support
- Healthy-aging protocols
- Integrated with hormone plan
IV Nutrient & Integrative Care
IV vitamin therapy plus chiropractic, acupuncture, and targeted supplementation for whole-body wellness.
- IV nutrient infusions
- Acupuncture & chiropractic
- Clinical-grade supplements
Hormone Library
The Hormones We Optimize
Hormones work as an interconnected pathway. Understanding each one helps explain why a balanced, individualized approach works better than treating any single number in isolation.
Testosterone
Central to energy, libido, lean muscle, mood, and motivation in both men and women. Decline drives fatigue, low drive, and loss of strength.
Estrogen
Key to women's bone density, skin, mood, cardiovascular and cognitive health. Bioidentical estradiol can ease menopausal symptoms when appropriately dosed.
Progesterone
Balances estrogen, supports sleep and mood, and protects the uterine lining. Often the most under-appreciated hormone in women's health.
Thyroid
Sets your metabolic rate. Suboptimal thyroid drives fatigue, weight gain, cold intolerance, and brain fog — and is checked alongside sex hormones.
DHEA
An adrenal precursor to other hormones, tied to stress resilience, immunity, and vitality. Levels fall steadily with age.
Pregnenolone
The "mother hormone" upstream of many others, studied for its role in memory, mood, and cognitive sharpness.
Human Growth Hormone & Secretagogues
Supports recovery, body composition, and tissue repair. We focus on peptide secretagogues that prompt your body's own production.
Melatonin
More than a sleep aid — a powerful antioxidant tied to circadian rhythm, recovery, and healthy aging.
Bioidentical vs. Synthetic — Why It Matters
Bioidentical hormones are structurally identical to the hormones your body produces, so your body recognizes, uses, and clears them in the same way. We have used only bioidentical, plant-based hormones since 1997. Modern research increasingly supports a "timing" approach — starting therapy closer to the onset of menopause, individualizing hormone type, dose, and delivery — to maximize benefit while managing risk under medical supervision.
How It Works
A Clear Path From Testing to Optimization
Your plan is never guessed. It is built from your symptoms, labs, medical history, and goals. For HRT, you typically visit our Beverly Hills clinic once for a thorough 1–2 hour consultation where every hormone and its function is explained in detail.
01
Consultation
Tell us what has changed and what you want to improve. We review your full health picture together.
02
Labs & Review
We assess key hormone and metabolic biomarkers before any therapy is recommended.
03
Personalized Plan
Your provider builds a bioidentical protocol matched to your biology and safety profile.
04
Monitor & Adjust
Follow-up testing — convenient to you or at PMC — keeps your program stable and effective.
Measured Care
Built Around Data, Not Guesswork.
We combine symptom review, comprehensive lab testing, clinical judgment, and ongoing follow-up to create a responsible, individualized optimization plan.
1997Integrating BHRT since
1:1Personalized protocol review
360°Hormone & wellness assessment
FAQ
Common Questions
Answers to what patients ask most before booking an initial consultation in Beverly Hills.
BHRT uses hormones that are molecularly identical to those your body produces — derived from plant sources. Because the structure matches your own hormones, your body recognizes and processes them naturally. We have used only bioidentical, plant-based hormones since 1997.
It may be appropriate for adults with symptoms and lab markers that support treatment — including men with low testosterone or andropause, and women in perimenopause or menopause. A provider reviews your health history, medications, risk factors, and labs before any therapy is recommended.
Yes. Lab testing identifies hormone levels, metabolic markers, and safety considerations. Treatment should never be based on symptoms alone. Follow-up testing can be done at a location convenient to you or at our clinic.
For HRT you typically visit our Beverly Hills clinic once for an in-depth consultation lasting 1–2 hours, where every hormone and its function is explained. Follow-up consultations can be done in person, by phone, or in writing.
Yes. Beyond hormone therapy we offer physician-supervised peptide therapy, medical weight-loss programs that may include GLP-1 medications, NAD+ and longevity protocols, and IV nutrient therapy — each reviewed case-by-case with medical oversight.
Timing varies by person, baseline health, therapy type, and consistency. Some people notice changes within weeks; others need more time and follow-up adjustments.
We are at 415 North Camden Drive, Suite 204, Beverly Hills, CA 90210, serving Los Angeles, Bel Air, Brentwood, Santa Monica, Calabasas, Encino, and surrounding communities. Call 310.247.8045 to schedule.
Contact
Start With a Private Consultation
Call our Beverly Hills office or submit your information and our team will follow up to schedule your consultation.