About Lighthouse Infusions & Seattle Ketamine
Why Lighthouse Infusions & Seattle Ketamine?
We’re Small
Founded in 2019 by Liana and Eli Ren, Lighthouse Infusions is a small, family-run clinic dedicated to helping people in need of effective treatment for mental health and chronic pain conditions. We take pride in being accessible at every stage of your care. When you call, text, or email, you will communicate directly with either Liana or Eli, and when you come in for an infusion, you will always be treated by an experienced provider. As a smaller clinic, we’re able to offer a more intimate, individualized approach, and we are excited to bring this cutting-edge, often life-saving treatment to the greater Seattle area. We believe in the power of personal connection and the importance of making every patient feel supported throughout their journey with us.
We Care
At Lighthouse Infusions & Seattle Ketamine, patient care is at the heart of everything we do. Our goal is to ensure the best possible experience by combining research-backed protocols with a personalized approach to treatment. We understand that every person responds differently to medications, which is why we take the time to listen, and fully customize your care to suit your unique needs, comfort, and safety. Your well-being is our first priority, and we are committed to providing individualized attention every step of the way. You will always be treated by an experienced provider who not only administers your treatment, but also monitors you closely throughout your infusion, and is able to respond quickly if you have difficulty at any point. We take pride in offering a level of care that goes beyond clinical protocols, ensuring you feel respected, understood, and truly cared for during each visit.
Relaxing Atmosphere
Lighthouse Infusions & Seattle Ketamine is designed to be a comfortable, safe, relaxing space, where every detail is crafted with your comfort in mind. We’ve designed our clinic to be a sanctuary where you can focus on healing, away from the congestion and chaos of downtown. With a stunning view overlooking Lake Washington, our clinic offers a serene setting for peace and healing. Each infusion is administered in a private, spa-like treatment room, allowing you to relax in a cozy recliner while enjoying the calming environment.
To further enhance your experience, we offer a variety of personalized comforts to help you relax and unwind. From the peaceful sight of tree leaves fluttering over the lake to hummingbirds feeding just outside the window, nature plays a central role in the calming environment. Eagles can often be seen perched in the trees, while ducks and geese swim serenely in the water below. Inside the treatment room, you have full control over your environment, with dimmable lights and customizable light colors to suit your preferences. For added comfort, we provide options like meditation music, white noise, ear plugs, and eye masks to help you achieve a state of deep relaxation. Our goal is to create a space where you can feel at ease, allowing you to focus entirely on your well-being.
Our Team
Liana Ren, CRNA, ARNP - Founder/Medical Director
Nurse Anesthesiologist
Liana is the founder and medical director of Lighthouse Infusions & Seattle Ketamine, bringing over years of hands-on anesthesia experience to her role. She has earned a reputation for excellence, working in a range of settings including level-1 trauma centers, teaching hospitals, and rural facilities where she was the sole anesthesia provider for extended periods. Thanks to her quick thinking and vast expertise in anesthesia, human physiology, and life-threatening conditions, Liana has saved countless lives throughout her career.
Liana’s dedication to patient safety and compassionate care has been the driving force behind her career. She became interested in IV ketamine therapy in 2006, as she followed emerging research on its potential to treat mood disorders and chronic pain. As the evidence grew, so did her commitment to offering this transformative therapy to patients who had exhausted traditional treatment options.
One of the most rewarding aspects of her work is seeing patients who have struggled with severe depression, anxiety, PTSD, and other conditions finally experience relief. Liana takes great pride in witnessing her patients regain joy and functionality after undergoing ketamine therapy, often emerging with a new lease on life.
At the core of Liana’s approach to care is respect, nonjudgment, and an unwavering focus on patient safety. She believes in treating every patient with dignity, letting the past stay in the past, and focusing on a brighter, more hopeful future. Liana is dedicated to ensuring that each person who walks through the doors of her clinic feels safe, comfortable, and supported as they begin their journey to healing.
Outside of her professional life, Liana enjoys spending time with her family, reading, trying out new recipes, and exploring the beautiful lakes and rivers of the Pacific Northwest.
Melissa Louthain, DNP, ARNP, ANP-C
Nurse Practitioner
Melissa is a board-certified nurse practitioner with over two decades of diverse experience spanning primary care, infectious diseases, public health, and research. Her extensive medical background has equipped her with a broad understanding of patient care, but it is in the field of mental health that Melissa has found her true calling.
Driven by a passion for exploring and implementing less traditional treatment modalities, Melissa has dedicated herself to innovative therapies that offer new hope to patients. Her journey led her to ketamine therapy, where she has witnessed its profound, transformative effects on individuals who have not found relief through conventional treatments.
Melissa views ketamine therapy as a beacon of hope for those seeking a new path to healing. Her own professional experiences have deeply influenced her commitment to this life-changing treatment, and she is honored to provide others with the opportunity for renewal and recovery.
In her practice, Melissa is dedicated to ensuring that her patients feel heard, respected, and supported as they navigate their journey to wellness. She is committed to working closely with each patient to help them rediscover their potential and achieve lasting well-being.
Outside of her professional life, Melissa enjoys traveling, spending time with her family, finding peace in nature, and cherishing the companionship of her beloved dogs.
Eli Ren - Office Manager
Eli plays a vital role at Lighthouse Infusions & Seattle Ketamine, serving as the first point of contact for most patients. He takes pride in offering honest, straightforward communication, avoiding sales tactics in favor of candid discussions about treatment options. Patients appreciate Eli’s willingness to answer their questions and his ability to help them feel comfortable and at ease.
Eli’s background includes years of working with troubled teens in residential treatment programs, wilderness therapy, and crisis intervention. His experience supporting individuals struggling with mental and behavioral health issues, along with guiding their families through challenges, has made Eli especially skilled at working with both patients and their loved ones. Having personally dealt with depression and anxiety, Eli brings a deep sense of empathy and understanding to his interactions, helping patients feel supported as they navigate their own mental health journeys.
In addition to patient interactions, Eli is responsible for running the clinic’s day-to-day operations. He handles everything from scheduling, inventory, and ordering supplies, to maintaining the website, managing IT, accounting, and facilities maintenance.
Outside of the clinic, Eli is a passionate whitewater kayaker who has been paddling class-V for more than two decades. He also enjoys photography, weightlifting, playing chess, riding bikes, and anything else where he can spend time outdoors with his family. Eli and Liana have been married for years, and together they have two boys, ages and .