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Meet Our Team

Katerina <span class="text-green">Helmn, FNP</span>

Katerina Helmn, FNP

Founder, Medical Provider

My name is Katerina and I am a Founder at Rejuv Medical. It was born to challenge medical spa and medical office experience. At Rejuv Medical we implement caring, non-judgimental, and personalized approach to every patient. As a provider, I serve you to look and feel your best. As many modern people today, I have been striving for personal and professional growth and implementing my knowledge to enlighten you to do the same.

I’ve had a very successful career as a Family Nurse Practitioner specializing in Dermatology and Aesthetic Medicine in California. I have started my Aesthetics journey in Moscow, Russia and continued in the U.S. I have obtained a Bachelor degree in Nursing Science at California State University, Los Angeles and a Family Nurse Practitioner at prestigious Samuel Merritt University in Oakland, California.

My passion for medicine and helping others started at a very early age, but specific interest in Dermatology and Aesthetic Medicine was facilitated by my own skin issues. I developed a severe form of cystic acne a few years after I came to the U.S. and have seen several dermatologists and primary care doctors. I was given birth control and topical medicines, but acne didn’t resolve.

My journey for healing took me to exploring integrative medicine. I discovered gut-skin connection, food sensitivity reactions, and hormonal imbalances that contribute to adult acne. Few months after applying what I learned about at A4M Anti-Aging institute, my acne cleared up. This is when Rejuv Medical was born. A place where health and beauty are taken beyond what regular medicine has to offer. Aging is a complex process that can be reversed by skin treatments as well as personalized medicine. My goal is to honestly address patients’ concerns and develop a unique skin and overall health maintenance plan.

My vision is to help every human in the world feel their best, be happy, and success in their lives.

I believe in treating the cause of the problem, bridging the gap between natural and conventional medicine while offering the best healthcare possible

Dr. Liz <span class="text-green">Lyster</span>

Dr. Liz Lyster

Medical Director

Dr. Liz Lyster, Midlife Health Expert, is passionate about helping women and men feel their best so they can do their best. As a Board Certified OB/GYN doctor for almost 30 years, Dr. Liz has helped women and men increase energy, reignite their sex drive, clear up hormonal imbalance, and lose hundreds of pounds.

After graduating from Cornell University with honors, Dr. Liz completed medical school at the University of California, Irvine, followed by her OB/GYN residency in Los Angeles. To expand her commitment to teaching, she earned a Master of Public Health degree from UCLA in Community Health Education.

Dr. Liz walks her own talk. To model growing older with grace, agility and power, Dr. Liz celebrated turning 50 a few years ago by climbing Mt. Kilimanjaro. She is a continuous learner, having logged thousands of hours as a leader, participant, or volunteer in personal development programs since the age of 19.

Dr. Liz serves as a medical director at Rejuv Medical and runs her individual practice in Foster City, California.

Jamie <span class="text-green">Ancheta</span>

Jamie Ancheta

Practice Coordinator

My name is Jamie, and I am a Practice Manager at Rejuv Medical. My goal is for you to have a pleasant and smooth experience coming into our medical office. I serve as a patients’ advocate and share an expertise in service industry experience. At Rejuv Medical, I transform your medical office visit into a unique spa experience.

First, I became Katerina’s patient and immediately fell in love with the practice. It wasn’t an accident that I offered my help to Katerina’s rapidly growing practice. With empowerment and guidance, it was easy to start making impact right away. I wanted to bring a unique flow and compassion to the practice. Also, being a patient myself, I understand everyday challenges we face on the path of beauty, confidence, and optimal health. I can relate to those on their journeys to their best life and would love to support you on this courageous journey.

I certainly have a passion for things being fair. I have recently graduated from California State University, East Bay with a degree in Criminal Justice and would like to continue my path to becoming a lawyer in the near future.

In my free time, I love to explore new restaurants in the Bay Area, spend my mornings in the gym, and attend music concerts and festivals. When I am not out and about, I like to spend time at home while binge watching tv series. I also love perfume, new makeup products, and clothing. My favorite perfume at the moment is Jo Malone Peony and Blush Suede.


Our vision is to help every human in the world feel their best, be happy, and success in their lives.

We believe in treating the cause of the problem, bridging the gap between natural and conventional medicine while offering the best healthcare possible