At MD Total Wellness, we’re redefining what wellness care looks like in Orange County. Unlike online telehealth companies or cookie-cutter clinics, we’re a physician-owned medical practice offering personalized, results-driven care — in person, not over a screen. We believe in-person care is better care.
Dr. Oliak and PA Mollet have worked together since 2006 — first in Dr. Oliak’s bariatric surgery practice, now in functional wellness. They founded MDTW to address a growing gap in traditional healthcare: expert, evidence-based hormone therapy, safe and effective weight loss, and personalized wellness solutions that genuinely improve quality of life.
Dr. Oliak’s decision to transition from surgery to wellness wasn’t just professional — it was personal. His own experience with testosterone therapy in 2023 was transformational, reinforcing his belief that these treatments change lives. PA Mollet brought the same conviction about hormone therapy for women, having experienced its benefits firsthand. MDTW exists because they both believe in what they offer.
Your safety, your results, and your long-term success are always our top priority. We take the time to listen, understand, and guide you — with care that’s personal, evidence-based, and built around your goals.







Dr. Oliak and PA Mollet are ready to help. Take the first step toward better energy, a healthier weight, and a quality of life you deserve.
We are conveniently located in Brea, CA, at 255 W Central Ave, Suite 203. Our service area includes Brea, Yorba Linda, Anaheim Hills, Fullerton, Placentia, and surrounding Orange County and Los Angeles County cities.
Choose MDTW because our providers bring something most wellness clinics can’t: over 20 years of shared clinical experience, starting in bariatric surgery and now in functional wellness. We’re physician-owned, in-person, and deeply invested in your results — not a telehealth company, not a franchise. We offer evidence-based treatments for hormone health, weight loss, sexual health, hair restoration, and more, with personalized care that treats you as an individual. Schedule a free consult to experience the difference.
Dr. David Oliak, MD, and PA Allison Mollet, PA-C, have worked together since 2006 — first in Dr. Oliak’s bariatric surgery practice, now in functional wellness at MDTW. Dr. Oliak is board-certified and brings deep clinical expertise in weight loss that few GLP-1 providers can match. PA Mollet is menopause-certified and specializes in helping women navigate hormonal changes. Together, they’ve helped thousands of Orange County patients achieve lasting results. Book a free consult to meet them.
Testosterone replacement therapy (TRT) can be life-changing for men with low testosterone. Low testosterone is common, even in younger men, and has become more prevalent over time — studies show average testosterone levels have dropped by at least 25% over the past several decades.
Symptoms of low testosterone include low energy, fatigue, low sex drive, weak or less frequent erections, ED, loss of muscle, weight gain, low metabolism, low motivation, irritability, anxiety, depression, and feeling past your prime. Men often attribute these symptoms to normal aging — but they are frequently due to hormone loss, and they are treatable.
If any of these symptoms sound familiar, schedule a free consult and in-office blood test to find out if testosterone therapy is right for you.
Bioidentical hormone therapy is among the most effective treatments available for perimenopause and menopause symptoms — addressing the root cause rather than masking symptoms. These include hot flashes and night sweats, vaginal dryness and atrophy, brain fog, irritability, low libido, difficulty achieving orgasm, joint pain, mood changes, heart palpitations, and migraine headaches.
Beyond symptom relief, bioidentical hormone therapy may also reduce the risk of chronic conditions including heart disease, osteoporosis, and dementia — making it one of the most impactful long-term wellness investments available. Schedule a free consult with PA Mollet to find out if hormone therapy is right for you.
MDTW’s GLP-1 weight loss program combines quality-vetted compounded semaglutide or tirzepatide with physician oversight, personalized dosing, nutrition and lifestyle guidance, and body composition tracking — all at prices below brand-name alternatives.
What sets us apart is the depth of experience behind your care. Dr. Oliak performed over 3,000 bariatric surgeries before transitioning to GLP-1 weight loss — giving him a clinical understanding of weight management that most GLP-1 providers simply don’t have. Together, he and PA Mollet have specialized in weight loss for over 20 years and helped thousands of patients achieve lasting results. Schedule a free consult to get started.
No — and here’s why that works in your favor. By not billing insurance, we eliminate prior authorizations, surprise bills, and the time pressure that rushes most medical appointments. You get unhurried, focused care with a provider who actually knows you. We accept all major credit/debit cards, HSA and FSA, and offer 0% financing for treatment packages.
Our prices for hormone therapy and weight loss are listed on our individual service pages. We offer transparent monthly pricing with no time commitments, so you cancel anytime. For procedures, such as Alma TED, EmSella, and EmFemme, price depends on the number of treatments prescribed, and is determined after your consultation.