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

Read Bio

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

Lilian Lam

Lilian Lam, RN

RN Practice Manager

Read Bio

Lilian loves working in healthcare because it is both rewarding and fulfilling. But what keeps her (and what she is in love with) is that there are always changes keeping her engaged and on her toes. Being a nurse gives her a variety of different specialties and niches, so she’s been able to find what’s right for her personality type, and loves that if she wants to change her specialty one day, nursing is a field that gives her the flexibility to do just that. She’s happy to be in an industry full of selfless individuals, one that allows her to serve the community as well as develop professionally.


Lilian earned a BS in Health Science from California State University, East Bay, and an AS in Nursing from City College of San Francisco. Prior to her role as Practice Lead, she worked as the Nurse Manager/Office Manager at a pediatric primary care office in SF, where she developed a passion for working with and encouraging new parents. She also worked in a Med-Surg unit at a small community hospital in her hometown of Delano, California, which is where she got experience working on a code-blue team. Lilian also learned the value of having culturally competent providers, nurses, and support staff while she was in that role. All of her experiences have shaped her as a nurse, and helped her consider each unique path that the people she’s helping might be on—including patients, family members, or the staff she serves.


Outside of work, Lilian enjoys reading, hiking, cooking, and baking.


Melinda Wong, RN

Registered Nurse

Read Bio

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.

Lauren DeSilva

Lauren DeSilva, PsyD

Mental Health Therapist

Read Bio

Lauren looks forward to helping others every day. The power of awareness and change keeps her excited about what she does, and she believes that everyone already has what they need inside to maximize their potential. Lauren approaches each patient with the mindset that health and wellbeing improve when prioritized, and it starts with taking that first step.


Lauren has worked in community mental health clinics, hospitals, substance abuse and crisis centers, and private practice. She uses evidence-based modalities in therapy, such as Cognitive Behavioral Therapy, along with Dialectical Behavioral Therapy, and Solution-Focused Brief Therapy.


Lauren was born in Houston, TX and raised in Orange County, CA. She enjoys spending time with her Beagle puppy and going for walks and hikes, as well as spending time with family and friends and hosting them at her home. She loves visiting the beach and traveling to new places, even if that’s just getting in the car and taking a road trip with her puppy.


-BA, Psychology (minor in American History), University of California, Davis

-MA, Clinical Psychology, Azusa Pacific University

-PsyD, Clinical Psychology, Azusa Pacific University


What makes me unique: My spontaneity keeps life fun, and I am always searching for what I can look forward to next. I stay connected to friends by frequently throwing out fun ideas and making plans. I also have the ability to stay emotionally attuned to the needs of others and respond accordingly. Whether someone is feeling sad or stressed, I will sense it and be there for those around me.


Why do I practice healthcare: I am drawn to helping and serving others. Since a young age, I have embodied servant leadership and wanted to uplift people. I enjoy providing therapy because I can have a direct impact and role in my patients’ wellbeing, and I can provide a safe space that many times cannot be found elsewhere. Crossover’s integrated approach allows me to continue practicing holistically, and I love working within a multidisciplinary team so that I can incorporate other disciplines and perspectives into the care I deliver.

Olivia Chu

Olivia Chu, DC


Read Bio

As a chiropractor, Olivia enjoys discovering different ways of movement to treat and improve the lives of her patients. In her practice, Olivia enjoys using movement assessments and patient education to help others get better faster.


Olivia is a California native who doesn’t mind paying the sunshine tax to be close to the ocean and the mountains. She usually spends her free time with her husband and dog on walks around the neighborhood lake, discovering new recipes, and spending time with friends and family.


-BS, Biological Science, University of the Pacific

-Doctorate of Chiropractic, Palmer College of Chiropractic

-Recipient, BiofreEze Scholarship


What makes me unique: My caring nature.


Why do I practice healthcare: I enjoy sharing my knowledge with others to enhance their life and minimize pain and discomfort.


Ben Manuel, DC


Read Bio

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.

Laurie Wallace

Laurie Wallace, PT, MPT, ATC

Physical Therapist

Read Bio

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.

Julie Baumhofer

Julie Baumhofer, LAc


Read Bio

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.

Our website(s) uses cookies to distinguish you from other users of our website. This helps us to provide you with an exceptional experience when you browse our website(s) and also allows us to improve our site and serve personalized advertisements regarding services that may be of interest to you. By continuing to use the site, you are agreeing to our use of cookies.
Our website(s) uses cookies to distinguish you from other users of our website. This helps us to provide you with an exceptional experience when you browse our website(s) and also allows us to improve our site and serve personalized advertisements regarding services that may be of interest to you. By continuing to use the site, you are agreeing to our use of cookies.