Leslie Huizenga, R.N.

Marin Cancer Care is a special place. It’s a place to come for answers, for direction and for hope. That’s why I love working here. It is a place filled with hope. We meet people at a vulnerable, scary time and wrap them in care and compassion. It is an incredible honor and privilege to care for our patients, to be part of their journey and help them navigate through so many unknowns.

Ruth Tongkhoyam, R.N.

I came from Burma (Myanmar) in 1988 with my mom. Soon after arriving to the States, I have been learning. I am a lifelong learner. I started with English as a Second Language at College of Marin and never stop. I got BSN degree from Dominican University in 2004. I got MSN in Nursing Informatics in 2016. I graduated from Samuel Merritt University with FNP certificate in 2021. Currently, I am working as a nurse learning about chemo medications. My goal is to become an Oncology NP. My beloved mother passed away from cancer in 2019. I want to provide the best care I can to people who are dealing with cancer. I want to honor my mother and I get to do-over every day. It has been my absolute pleasure working at Marin Cancer Care and learned from the staff every day.

Collet Easy, NP

While serving as a nurse at Kentfield Specialty Hospital and Marin Health Medical Center, I pursued and achieved a Master’s degree with a Nurse Practitioner emphasis from Samuel Merritt University.  Have lost loved ones to cancer I am motivated to support those battling the disease and am grateful to work alongside a distinguished team of Oncologists and supporting staff at Marin Cancer Care.  Originally hailing from Jamaica, I’m a mom of two who finds joy in balancing my professional endeavors with precious time spent with family.

Stacy Wells, Director of Nursing

Oncology is my passion and my calling, it inspired me to reach further in my career by becoming an Oncology Certified Nurse and completing my Master’s Degree in Nursing Informatics. I believe in providing safe, evidence-based, and compassionate care to all my patients. I value the relationships formed from being a cancer nurse, including patients and colleagues. I’m here to support my staff so they can grow professionally and provide their best level of care to you.  I’m looking forward to helping you through this journey.

Justin Biddle, MSN, JD, NP

Before joining Marin Cancer Care, Justin Biddle, NP, worked as a registered nurse in palliative care, where he supported patients and families facing serious illness. That experience shaped his approach to oncology, emphasizing compassionate communication, symptom management, and patient-centered care.

Justin completed his nurse practitioner training at UCSF, followed by the UCSF Cancer Services Advanced Practice Provider Fellowship, where he gained experience across outpatient oncology, hematology, infusion care, inpatient hematology, and cancer survivorship.

At MCC, Justin partners with patients and families throughout diagnosis and treatment, focusing on evidence-based care that reflects each person’s goals, values, and needs. He believes the best cancer care treats both the disease and the individual living with it. A native of Marin County who still calls Marin home, Justin feels grateful to practice in the community where he grew up. Outside of work, he enjoys trail running, mountain biking, skiing, cooking, and spending time outdoors.

Rachel Nielsen, RN

My #1 goal as your nurse is ensuring you know you never have to walk this path alone. Facing a new diagnosis can feel overwhelming, I am here to manage the logistics so you can focus on healing. What inspires me daily is the cutting-edge science and deep human connection that oncology nursing offers, especially seeing new treatments grant patients more meaningful time. My approach is rooted in creating a partnership in health and hope by guiding patients and their families through every step of the journey. It is a true privilege to build these relationships and serve as a steady anchor for you throughout your care.