Our team is your team.

On the path to health and wellness, it’s great to know your team will be with you all the way with expert knowledge and inspiration.

Marilyn Ralph_

Marilyn Ralph, MD, dipABLM

Primary Care Physician

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Marilyn is a board-certified Internal and Lifestyle Medicine Physician. Marilyn’s passion is to apply Lifestyle Medicine both personally and professionally, regularly cooking her own plant-based meals while motivating her patients to engage in evidence-based lifestyle change to prevent, treat, and reverse chronic disease.


Born and raised in Florida, Marilyn graduated from The University of Florida College of Medicine. She then decided to venture west to complete her residency at Kaiser Permanente in Santa Clara, California. In her free time, she and her husband enjoy the outdoors: mountain biking, hiking, playing golf, and tennis.


– BA, Spanish and Chemistry, Wake Forest University

– MD, University of Florida


Melinda Wong, RN

Registered Nurse

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Melinda is a compassionate Registered Nurse who has been practicing the art of nursing for over 32 years. She is detailed and highly motivated to provide competent patient care. She enjoys getting to know her patients and developing a strong professional rapport with them. She has worked in both hospital and outpatient settings in the areas of orthopedics, neurology, apheresis, and oncology. Melinda believes in the power of preventive medicine to improve patient outcomes. Born in Dallas, Melinda’s family moved to a small copper mining town in Arizona at the age of four. From a very young age she knew she either wanted to be a teacher or a nurse, and when she discovered that nursing entails a lot of patient education, she felt that could satisfy both of her ambitions. In her spare time she enjoys tennis, travel, reading, and spending time with her husband, three children, and grandson.


– ADN, Pima College


What makes me unique: In my younger years I competed in several bodybuilding competitions and continue to enjoy weight training and exercise in general. I have traveled to over 10 countries and enjoy immersing myself in the culture of each country.


Why do I practice healthcare: Since childhood, I have had a keen interest in healthcare. I enjoy learning new things, patient relationships, and the ever-evolving nature of medicine. I was looking for a new perspective on healthcare administration, and was impressed with Crossover’s vast variety of services provided under one roof. I enjoy the collaborative efforts and camaraderie of our teams.

Lucia Tanassi

Lucia Tanassi, LCSW, PhD


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Lucia is passionate about collaborating with members in therapy and focusing on awareness, the whole body experience, and optimizing wellbeing. She does not seek to “fix” problems or people, but to develop solutions in partnership with members. Her goal is to allow people to develop their own strengths and triumph over life challenges.


Trained in cognitive behavioral therapy, contemplative psychotherapy, and EMDR (eye movement desensitization and reprocessing), Lucia’s approach to therapy involves mindfulness, compassion, emotional freedom technique, and various mindfulness techniques. She works with clients dealing with challenges related to career, health, parenting, and relationships, as well as anxiety, depression, and trauma. She also supports tech and business professionals facing job stress and burnout, and has extensive experience in grief, loss, major life transitions, and emotional and social coping mechanisms.


Lucia was born in Rome, Italy. When not in clinic, she loves to swim, hike, jog, golf, play board games, spend time with family, and travel.


-BA, Anthropology, University of California, Berkeley

-MSW, San Jose State University

-PhD, Medical Anthropology, Cambridge University


What makes me unique: I speak and cook Italian fluently!


Why do I practice healthcare: I am passionate about whole-person wellbeing and destigmatizing mental health.


Laurie Wallace, PT, MPT, ATC

Physical Therapist

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Laurie has focused her 20+ year career as a Physical Therapist and Certified Athletic Trainer on providing exceptional patient care and personalized results. She loves having a personal connection with members and believes in focusing treatment on the underlying problem (rather than symptoms) for the best long-term result. She strives to empower and educate members with the tools to make confident decisions and to become the best version of themselves.


Laurie incorporates a variety of techniques in Eastern and Western philosophies, and is committed to continuous professional development and learning about innovative treatments. She uses micropoint stimulation, acupressure, guasha, and kinesiology taping, as well as tapping, breathing, and meditation techniques to calm the mind and body. She has worked with multiple organizations including professional and collegiate sports teams and athletes, both on and off the field. Some of these include NFL Europe (Barcelona Dragons), Arena Football League, Championship Place Kicking and Punting (with Hall of Fame nominee, coach Doug Blevins), McGirt Boxing (with International Boxing Hall of Fame coach Buddy McGirt), and athletes from the NBA, MLB, professional soccer, and D-II co-ed sports.


Laurie and her husband enjoy exploring San Francisco, hiking, attending wine festivals, trying new restaurants, and traveling the globe. She is an active member of Alpha Phi International Fraternity at large, and was nationally ranked when she retired from bodybuilding competitions. When she’s not treating patients, Laurie enjoys practicing yoga, studying Chinese medicine techniques and homeopathy, and working out.


-AA, Pre-Physical Therapy, Indian River State College

-BS, Sports Medicine (minor in Biology), Barry University

-BS, Biology (minor in Physical Therapy), Barry University

-Recipient, Sears Directors’ Cup Postgraduate Scholarship, Barry University

-Recipient, Sports Medicine Outstanding Graduate of the Year, Barry University

-Recipient, Sister Jeanne O’Laughlin Community Service Award, Barry University

-MPT, Nova Southeastern University

-Certified, Athletic Training

-Certified, Yoga Instructor (200 hour)

-Certified, Homeopathy and Myofascial Decompression

-Functional Movability Specialist


What makes me unique: I love jigsaw puzzles and completed my first 1000 piece puzzle at age five. Professionally, what makes me unique is that I create relationships first. I strive to build trust and provide an empathetic ear for members. At Crossover, I’m empowered to truly surround members with the care and support they need.


Why do I practice healthcare: I am passionate about education and helping others learn more about their bodies. I use open communication and teamwork to empower every member to be a part of their own success.


Ben Manuel, DC


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Ben is a California native, born and raised in San Francisco. He received his Bachelor’s degree from the University of California at Berkeley and his Doctorate in Chiropractic from Palmer College of Chiropractic West in San Jose, CA. He draws on his 14 years of experience in running a multidisciplinary private practice when it comes to treating patients. He is very excited to join Crossover’s integrated healthcare team at Visa. He believes that a good doctor needs to listen and educate each and every patient in order to develop a specific course of treatment that will optimize their health. When he is not taking care of patients, you will find him playing tennis, fishing, volunteering time to Palo Alto High School football or spending his weekends with family in San Francisco or Santa Cruz.

Julie Baumhofer

Julie Baumhofer, LAc


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Julie believes in a prevention-first, integrated model of medicine and provides a personalized approach that blends Eastern thinking with Western living. She considers a patient’s openness to making the prescribed lifestyle and diet changes that often accompany treatment to be the most important aspect of the working relationship.


In the 14 years she has been practicing acupuncture and Traditional Chinese Medicine, Julie has honed her skills in women’s health, herbal medicine, and cupping.


Originally from sunny Florida, Julie loves the great outdoors. She can be found most days with her teacup Chihuahua Daisy, hiking in and around the Bay Area.


-BS, Zoology, University of Florida

-MS, Traditional Chinese Medicine, American College of Traditional Chinese Medicine


What makes me unique: I was very lucky to travel extensively when I was younger. Seeing people from all walks of life living so differently from myself (and each other) had a profound impact on me. I am open to looking at things in new ways and always willing to listen.


Why do I practice healthcare: I work in healthcare because I genuinely enjoy helping others, and I wanted a career that would allow me to continue learning over the course of my lifetime. I have been lucky enough to find both these qualities through a career in Chinese medicine.

Analyn Cruz

Analyn Cruz


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Crossover Hosts are at the forefront of every unique member experience. They deliver an exceptional experience from start to finish by greeting members, scheduling appointments, answering questions, alleviating concerns, and addressing special requests. Hosts strive to create a welcoming environment for everyone who comes through the door and are an integral part of building and maintaining our relationships with members.


Hosts assist with ensuring a seamless, member-centered experience. They help fill gaps in communication, provide follow-up, and are focused on member satisfaction. Our Hosts look forward to welcoming you in!

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