Timeless Regenerative Medicine

Primary Care & Aesthetics Medicine

Comprehensive Medical Care and Aesthetics

At Timeless Regenerative Medicine, we offer comprehensive primary care and aesthetic care designed to help you look, feel, and live your best.

We take a holistic, patient-centered approach, addressing health from the inside out. Our services range from advanced aesthetic treatments and primary care and hormone optimization, all tailored to support your overall well-being and confidence.

Through advanced lab testing, including genetic analysis and GI mapping, we gain deeper insight into your body’s unique needs, allowing us to create truly personalized care plans.

Our mission is to empower you with the knowledge, treatments, and support needed to achieve lasting health, vitality, and natural beauty.

Primary Care

Aesthetics

Why Choose us?

Tailored Treatments

We understand that every individual is unique, which is why our services are customized to meet your specific goals and needs.

Holistic Approach

We focus on your overall well-being, offering treatments that enhance both your inner health and outer beauty.

Innovative Solutions

From advanced aesthetic treatments to state-of-the-art lab testing, we deliver the latest in wellness and beauty technologies.

Expert Care

Our team of experienced professionals provides personalized attention and cutting-edge expertise in every service.

Why Choose us?

Holistic Approach

We focus on your overall well-being, offering treatments that enhance both your inner health and outer beauty.

Tailored Treatments

We understand that every individual is unique, which is why our services are customized to meet your specific goals and needs.

Expert
Care

Our team of experienced professionals provides personalized attention and cutting-edge expertise in every service.

Innovative Solutions

From advanced aesthetic treatments to state-of-the-art lab testing, we deliver the latest in wellness and beauty technologies.

a story that brings rejuvenation and experience.

About Timeless Regenerative Medicine Team

Meet Dr. Kelly Mao

The Expert Behind Timeless Regenerative Medicine
Dr. Kelly Mao is a board-certified Family Nurse Practitioner who combines the art of aesthetics with the science of primary care to help patients achieve health and beauty from the inside out. She believes true wellness begins with balance, addressing both internal health and outward confidence through personalized, evidence-based care. Dr. Mao earned her Doctor of Nursing Practice (DNP) from Seattle University and has over eight years of clinical experience spanning acute care, primary care, neuroscience, and aesthetic medicine. As a certified injector, she specializes in Botox, dermal fillers, and non-surgical rejuvenation, with a focus on achieving natural, harmonious results. Committed to continuous learning, Dr. Mao has completed advanced aesthetic training internationally in South Korea, where she trained alongside leading Korean dermatologists and aesthetic physicians—gaining expertise in the latest anti-aging and skin rejuvenation techniques. Her clinical interests extend beyond aesthetics to include medical weight loss, hormonal and menopause management, and preventive health, allowing her to deliver truly integrative care. Dr. Mao is an active member of the Pacific Northwest Chinese Nurses Association (PCNA), the American Academy of Aesthetic Medicine, the American Academy of Anti-Aging Medicine, The Menopause Society, and the Washington Obesity Society.

Dr Pei-Chia Liang

Dr Pei-Chia Liang is a board-certified Internal Medicine physician with more than a decade of clinical experience. She completed her residency training at Danbury Hospital in affiliation with Yale School of Medicine, where she developed a strong foundation in evidence-based primary care. Dr. Liang combines her expertise in primary care, weight management, and hormone therapy with a commitment to holistic medicine. She believes optimal health is achieved not only through medical treatment but also by empowering patients to make sustainable lifestyle changes in nutrition, fitness, stress management, and preventive care. Her approach is personalized, compassionate, and comprehensive—helping each patient restore balance, improve vitality, and reach their long-term health goals.

Our Partners and Awards

Timeless Regenerative Medicine, PLLC

Top 3 Business Rate 2025.
Medical Spa

Contact Form Demo

Our Services Will Make You Glow

Aesthetics

Our Bellevue weight loss programs go beyond simply eating less, exercising more, or replacing meals with protein shakes.

we areas like Forehead, Frownlines, Eyebrow lift, Crow’s feet, Bunny Lines, Lip flip, Masseters (TM), Dimpled chin, Hyperhidrosis (excessive sweating armpits), and more​…

Dermal fillers are non-surgical cosmetic treatments designed to restore volume….

RF Microneedling combines the benefits of traditional microneedling with the power of radio frequency energy…

Microneedling is a minimally invasive cosmetic procedure that uses fine needles to create tiny micro-injuries in the skin.

This advanced treatment involves intradermal or subcutaneous injections of pharmaceutical compounds, enzymes, hormones,

Microneedling treatments rejuvenate the scalp by stimulating stem cells and promoting natural hair growth.

PRP (Platelet-Rich Plasma) therapy is a regenerative treatment that uses your own blood’s platelets to….

Laser hair removal is a non-invasive, long-term solution for reducing unwanted hair. 

This is the only medical-grade peel available that includes Glutathione

IV Therapy

Overview Comprised of essential multivitamins and other nutrients, this cocktail premix is designed to help alleviate chronic symptoms, including ongoing pain, asthma and more. 

The hangover IV Kit is designed to hydrate and alleviate hangover symptoms. The kit contents can create 10 or more infusions depending on the dose.

The Skinny Drip is designed to support metabolism, energy, and weight management. that work together to boost energy levels, promote fat metabolism, and aid in cellular repair and recovery.

The Get-Up-And-Go IV Kit is designed to help kickstart your metabolism and feel more energized. The kit contents can create 10 or more infusions depending on the dose.

The Immunity Boost IV Drip is designed to strengthen your immune system and promote overall wellness. This infusion includes a potent blend of vitamins and minerals

An NAD shot helps increase cellular energy production, enhancing mental clarity, focus, and physical endurance. It supports mitochondrial health, which is essential for converting nutrients into energy and promoting overall cellular function.

The Inner Beauty Kit is designed to quench the skin to reduce wrinkles and fortify hair, skin and nails. The kit contents can create 10 or more infusions depending on the dose.

Known as the “energy powerhouse” of cells, mitochondria convert macronutrients from food into ATP, the energy-rich molecule that fuels cellular activity.

Lab Testing

The panel provides a comprehensive view of overall health, targeting key systems such as the thyroid, cardiovascular, metabolic, and hematologic systems.

Your genes are the basic instructions for your body. Which begins the question: How well do you know your genes?

The Comprehensive Female Panel Plus measures the levels of several hormones and other markers to provide a comprehensive assessment of a patient’s health.

The GI-MAP (Gastrointestinal Microbial Assay Plus) test, offered by Diagnostic Solutions Laboratory, is a comprehensive stool test designed to assess the microbiome and detect gastrointestinal pathogens. 

Weight loss lab testing involving the following panels is designed to identify underlying medical conditions or imbalances that may be affecting weight management.

This panel is used to help diagnose HIV, syphilis, herpes, chlamydia, and gonorrhea.

Everything you need in one place

Instant Primary Care

We offer urgent care medical service, primary care, and urgent care. If you are looking for the best same-day visit clinic that provides high-quality care, then Timeless Regenerative Medicine offers top-notch medical services in eastside Bellevue.

Are you on vacation and in need of personalized medical care? Do you or your family have an urgent, non-emergent medical need? Are you tired of waiting long hours in a crowded emergency room? Look no further! Kelly Mao, a board-certified Family Nurse Practitioner, introduces Instant Primary Care Service—just what the provider ordered.

Timeless Wellness & Aesthetic Medicine