Our Team

Rejuve TeamRejuvé is a physician-inspired clinic which offers the most advanced treatments in nonsurgical cosmetic services and skincare. Our board-certified physician and highly skilled team of licensed professionals are dedicated to providing you with the highest level of care in the world of health and aesthetics.
- John Tang, MD
- Alexandra Tang, BSN, RN
- Kim Tang, MD
- Tammy Byrnes, B.A., L.C.E
- Roya Zargari
- Anita Guerrero
- Roslyn Warriner

John Tang, MD

“Illustrating the art of aesthetics and the enhancement of lifestyles” – Unknown
A Leader in Expertise and Knowledge in his Field
John Tang, cosmetic surgeon saratoga
Dr. John Tang, MD, graduated Magna Cum Laude with a B.S. in Biological Sciences and a minor in Psychology from UC Irvine, where he was a member of Phi Beta Kappa. He attended Tufts University Medical School and received the Alumni Scholarship Award. He completed a 3-year residency in Internal Medicine at the Kaiser Hospital and a 3-year residency in Physical Medicine and Rehabilitation at Stanford University.
After his scholarly training, Dr. Tang received general and cosmetic dermatology training in a private dermatology office in Southern California. He also received advanced training in Botox, Restylane, Radiesse, Juvederm, Perlane, Dysport and Sculptra by fellow plastic surgeons, including Dr. Bradley Green, Dr. Applebaum. Dr. Tang is certified in Mesotherapy, Laser Liposuction, and Vaser Liposuction by the American Society of Aesthetics and Mesotherapy (ASAM). He received advanced training in laser liposuction with Dr. Vivek Bansal. Dr. Tang has been recognized as a Diamond Level injector — the top designation — for his extensive experience with Restylane, Dysport, and Sculptra. He also shares his expertise for Lumenis, training new physicians and company hires on the clinical applications of IPL, laser hair removal, and Aluma.
Dr. Tang was recognized by Consumers’ Research Council of America as “America’s Top Physicians 2012″, Global Register’s Who’s Who in 2006, has been the recipient of the American Medical Association Physician Recognition Award, and was named as San Jose Magazine’s Top Doc in 2008. He has published several articles in the field of aesthetic medicine, and has been quoted in publications such as the San Jose Mercury, the Contra Costa Times, and Online Suite Magazine. His expertise has been featured on the NBC Bay Area news, as well as Chanel 2 KTVU news.
As an active member of the American Academy of Anti-Aging, Dr. Tang keeps up to date with the latest research and treatments in bio-identical hormone replacement, nutritional supplementation, and skin rejuvenation procedures. He is a member of the American Society of Laser Surgery Medicine (ASLMS) which provides the most up-to-date information on the latest advancements in laser breakthroughs. Dr. Tang is also a Member of the American Academy of Anti-Aging Medicine (A4M), the American Society for Laser Medicine and Surgery (ASLMS), and the Botox Cosmetics Physician Network. He is at the forefront of technology, recently adding the use of autologous stem cells for various indications such as knee osteoarthritis and facial cosmetics.
Creator of the Rejuvé Treatment
In 2004, Dr. John Tang along with his wife, Alexandra, created Rejuvé, which is an innovative module of health and rejuvenation inspired by a well-balanced aesthetic of inner and outer total wellness. Rejuvé focuses on bringing out your body’s best both inside and out through vitamin supplementation, the balancing of deficient hormones through natural bio-identical hormone replacement, an emphasis on proper nutrition, and a carefully managed exercise regimen.
A new Rejuvé patient will be given a complimentary consultation where Dr. Tang and his team of highly-skilled licensed professionals will explore customized treatment plans and options with the patient. Each custom plan is designed to revive, rejuvenate, and renew the patient through non-surgical cosmetic procedures and proven anti-aging practices.
Dr. Tang is the current medical director and owner of Rejuvé, which has received accolades as being among “The Best in Fat and Cellulite” in San Jose Magazine in 2009, and Dr. Tang’s Rejuvé office has been designated as the official training site for the Exilis procedure.
An Internal and External Aesthetic Expert
Dr. Tang’s knowledge of cosmetics, anti-aging, dermatology, and traditional internal medical and orthopedic procedures allows him to bring his expertise in pain management to the field of cosmetics and aesthetics.
His knowledge of using Botox to treat painful muscle spasms has given him an advantage when using this treatment to relieve lines and wrinkles in the face. His medical experience with injecting medicine into joints, muscles, and the spine makes Dr. Tang exceptionally skilled and accurate with cosmetic injections such as Restylane, Juvederm, Radiesse, and Sculptra. With this expertise, he is able to provide his patients with minimal discomfort during cosmetic procedures.
From his-in depth training from multiple plastic surgeons and dermatologists, Dr. Tang has developed a keen aesthetic eye for the art of beauty and uses his unique medical knowledge and expertise in nonsurgical techniques to provide you the best, most natural-looking result.
Dr. Tang’s knowledge of cosmetic dermatology has been perfectly intertwined with his background in internal medicine, allowing him to understand the complex inter-workings of the body, such as how hormones, nutrition, and exercise affect the body and contribute to aging, allowing him to use these concepts mixed with cosmetic medical procedures to help reverse aging, internally and externally.



Alexandra Tang, BSN, RN

“Passion involves the exercise of expert skills, excellence in execution and effecting aptitudes” – Unknown
Co-Creator of the Rejuvé Treatment
Alexandra Tang
In 2004, Alexandra Tang co-founded Rejuvé and helped create the Rejuvé treatment system with her husband, Dr. John Tang. Rejuvé is a unique system for creating and maintaining a harmonious state of the inner and outer body by using vitamin supplements, balancing deficient hormones through natural bio-identical hormone replacement, emphasizing proper nutrition, and creating an exercise regimen. Being a registered nurse at Rejuvé in Saratoga, California, has allowed Alexandra to utilize her knowledge, experience, and the latest in technology and innovation to help others lead healthy lifestyles centered around the aesthetics of life, personal beauty, and inner health and wellness.
Her passion for beauty and enhancement of the skin has been a major foundation of her professional career. Alexandra struggled with her own skin pigment issues and through her conquest of them she has been become an expert on Melasma in ethnic women.
Journey Through Health and Beauty
Alexandra attended San Jose State University, obtaining a Bachelor’s of Nursing. She graduated with honors and was elected into the nursing honor society of Sigma Theta Tau. She then acquired a cosmetology license based on her desire to use her training in modern medicine in a way that would bring physical beauty into the world.
She has certifications in laser hair removal, IPL/photo facials, Aluma, acoustic wave therapy, Fraxel, Exilis, Botox, Restylane, and Radiesse and is a certified injector for Botox, Dysport, Restylane, Juvederm, and Radiesse. She has also received advanced training in Botox, Dysport, Juvederm, Restylane, and Radiesse.
Her certification in Advanced Aesthetic Medicine covers chemical peels, injections of facial implants and botulinium toxin, medical cosmetology, nutrition, shapes and cellulite control, skin laser therapy, and aesthetic venous treatment.
Alexandra is a member of the American Academy of Anti-Aging, the Dermatologic Nursing Association, and the California Nursing Association.
She is well-trained in the cosmetic dermatology field and worked with Dr. Korman, a plastic surgeon in Mountain View, from 2000 to 2002, where she performed all of the laser and filler procedures for the office. Alexandra received additional training in a private dermatology office in Southern California where she learned the art of botox, sclerotherapy, skincare, and other aspects of cosmetic dermatology.
Beyond Cosmetics
Alexandra maintains her roots in nursing and healthcare by continuing to be a part of the emergency room staff at the Kaiser Foundation Hospital in Santa Clara for the last 14 years. She has worked as a Charge Nurse for 5 years in an emergency room and as a Trauma ICU nurse at Stanford. Alexandra provides quality care with ethical standards infused with a sense of humanity to promote unique excellence in physical, internal, and dermatological care.
Combining a kaleidoscope of talents with skilled capability, Alexandra has managed a multifaceted career as well as a strong family life. She is a mother of 3 boys, an artistic interior decorator, a culinary expert with a deep love for cooking, and is fluent in Spanish.




Kim Tang, MD

Utilizing Talent with State-of-the-art Techniques
“Crafting inspiration gives life a timeless enhancement” – Unknown
Kim Tang, MDIn the changing world where state-of-the-art techniques are rendered with innate skills and years of dedicated study, professionals from the medical fraternity have increased and expanded their talents to include intricate modes to deliver aesthetic solutions. Transforming, identifying, and reconstructing areas that need specialized care, Dr. Kim Tang serves as a special consultant and was instrumental in the opening of Rejuvé in 2004, a physician inspired clinic that offers advanced treatments in non-surgical cosmetic services, skincare and wellness. Having been in private practice since 1996, in the fields of both general and cosmetic dermatology, Dr. Kim Tang also specializes in dermatologic surgery, performing Moh’s surgery, a highly complex form of cosmetic reconstruction surgery, to treat skin cancer patients.
Adding an innate gift of talent to her accolades, Dr. Kim Tang completed her undergraduate years where she earned her BS in Biological Sciences from UC Irvine, graduating Magna Cum Laude. She graduated from UC Irvine medical school with honors, earning membership to Alpha Omega Alpha, the highest medical honor society and completed her 3-year residency in Dermatology at the University of California, Irvine. In 1995, Dr. Kim Tang was awarded the Diplomate, American Board of Dermatology and was re-certified in 2005.
Showcasing Skill with Professionalism
Dr. Tang specializes in the art of nonsurgical facial lifts. She has been able to skillfully combine the use of lasers, botox, and dermal fillers to provide patients with a youthful and fresh experience without the risks and downtime of surgery. Her experience has earned her the distinguished recognition of being an Allergan Platinum Botox injector and her clinic is an official training site for the Lightsheer, IPL, and Aluma by the Lumenis Corporation.
Enhancing experience with excellence, Dr. Kim Tang is a Member, American Academy of Dermatology that has dedicated the services of its practicing members to excel in medical and public education, patient care, research, member service and support and professionalism. Earning the prestigious position as Member, American Society of Dermatologic Society, Dr. Kim Tang is part of an organization that is the largest dermatology specialty organization in the world. The organization also promotes, preserves, and enhances private practice of dermatology and cooperates with other organizations of similar natures that represent its members in those categories of legislative, educational, and socioeconomic areas. Dr. Kim Tang is also a Member, Orange County Dermatological Society and the American Medical Association. With over 13 years of clinical experience, Dr. Kim Tang has employed the most advanced techniques to offer the best in non surgical cosmetic treatments and skin care.




Tammy Byrnes, B.A., L.C.E

Tammy Byrnes
Tammy is our Receptionist and our licensed clinical esthetician. Her love for skincare began while working for a cosmetic dermatologist and being his patient. She has over 13 years experience in the skin industry. To further her passion to help others, she received her esthetician license in 2006. Having had problem skin herself, she can relate to many of our patients and help them reach their skincare goals. She is certified in Obagi, Biomedic, La Roche Posey, Skin Medica, and Neo-Cutis and regularly attends seminars to keep up to date with the latest in medical skincare. One of her specialties is dermaplaning, a highly skilled technique, to provide immediate exfoliation for that smooth silky skin look right before that special event. She has also added a nice personal touch to our rejuvenative Facials.
In addition to her esthetician license, Tammy holds a B.A. in Psychology from San Jose State University. We are happy to have her as a part of our Rejuvé team.




Roya Zargari

Roya Zargari
Roya Zargari is a leader in the field of Permanent Cosmetics. Roya has made the application of Permanent Cosmetics & Esthetics her specialty. She has successfully completed hundreds of procedures, and has earned the respect of many Plastic Surgeons in California. Past students, clients and health care professionals refer their patients, friends and relatives to Roya because of her caring, professional manner, eye for detail, and clinical hygienic process.
Roya is a Licensed, Certified Esthetics Instructor with advanced training in skin rejuvenation, anti-aging, and acne treatments. She is a graduate from London Metropolitan University and California State University, Sacramento with a BS in Computer Science and Mathematics. Roya is a graduate of Derma International and was certified by Derma International as a Permanent Cosmetics Instructor. Roya is a Certified Permanent Cosmetics Professional (CPCP). She is also a member of the Society of Permanent Cosmetic Professionals, (SPCP), and has been Certified as an Instructor by SPCP the largest non-profit professional association in the United States and internationally for the permanent cosmetics industry.
Roya believes in taking time with each client and/or student to fully explain and educate them about their individual permanent cosmetic procedures. She is personable, and truly passionate about her work. Roya’s goal is to consistently promote safety, excellence and professional standards by providing education, certification, and industry guidelines for each and every student.




Anita Guerrero

Anita Guerrero
Anita Guerrero is the office manager has been part of the team at Rejuve since 2007. She has over 15 years of Management experience.
She is a fan of the Rejuve skin care line, and loves how it makes her mature skin look and feel. She has also been using bio-identical hormone replacement along with a regimen of vitamins and supplements for the last 2 years to keep healthy from the inside out. She says that at the age of 52 she has not felt this good and has not had this much energy in years.
Anita enjoys supervising Rejuve, an outstanding spa, to ensure a high level of customer service and satisfaction. She loves to speak to clients, so make sure to drop her a line or say hi next time you visit.




Roslyn Warriner

Roslyn Warriner
Roslyn Warriner is the newest member to join the Rejuve team and helps out with our marketing and promotional efforts. She holds a degree in Communications from San Jose State University and has run global and regional marketing campaigns for some of the top Fortune 100 companies over the past 25 years.
Roslyn has always had a fascination with skin and beauty and is passionate about empowering people to feel healthy and beautiful both inside and out. She has personally been treated with Fraxel, Botox, Restylane and Juvederm and has seen the amazing transformation of fullness and volume to her appearance.

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