About Us

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Dr. Xinwei Liu, MD

Medical Director | Texas Ketamine & Wellness Center

Dr. Xinwei Liu is a board-certified Emergency Medicine physician and active member of the American Society of Ketamine Physicians (ASKP), with more than eight years of experience caring for critically ill patients in some of the busiest emergency departments across the country. He completed his residency training in Emergency Medicine at Kaiser Permanente in San Diego, where he developed not only advanced clinical skills but also a deep appreciation for the human side of medicine—helping patients through their most vulnerable and frightening moments.

Over the course of his career, Dr. Liu has worked in emergency rooms in California, Indiana, South Carolina, Arizona, and Texas, treating thousands of patients with life-threatening conditions. In the ER, he frequently encountered individuals in the midst of psychiatric crises—patients battling depression, anxiety, PTSD, or suicidal thoughts. Despite receiving traditional medications, many of these patients continued to suffer without meaningful relief. He has also encountered numerous patients with intractable pain conditions, including advanced stage cancer patients, sickle cell pain disese and fibromyalgia. Witnessing these struggles left a lasting impression and motivated Dr. Liu to search for better solutions.

It was through this work that he recognized the transformative potential of ketamine. As an emergency medicine physician, he has used ketamine daily in a variety of critical situations and is deeply familiar with its safety profile, reliability, and effectiveness. What began as a tool for procedural sedation and acute pain management in the ER has become, in Dr. Liu’s hands, a powerful treatment option to restore hope for patients facing conditions that have not responded to conventional therapies.

At Texas Ketamine & Wellness Center, Dr. Liu brings the same calm, steady presence that has reassured patients in emergency rooms for nearly a decade. He believes every patient deserves to feel safe, supported, and understood, and he takes time to explain treatment options and answer questions with empathy and clarity. His goal is to provide a medical environment where healing feels possible again—where patients are not defined by their diagnoses, but empowered by their progress.

Whether in the clinic or through concierge mobile services, Dr. Liu and his team are dedicated to making advanced ketamine therapy accessible, compassionate, and safe. His message to patients is simple: you are not alone, and with the right care, healing is within reach.

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Monica Phifer, FNP

Monica Phifer is a Family Nurse Practitioner with a strong foundation in critical care nursing. Her experience includes caring for patients transitioning out of the intensive care unit throughout the COVID-19 pandemic. This frontline experience during one of the most challenging times in modern healthcare has sharpened her clinical expertise and deepened her commitment to patient-centered care.

With an expanding focus on psychiatric and mental health care, Monica is pursuing advanced training through a post-master’s certificate in Psychiatric Mental Health Nurse Practice (PMHNP). Her goal is to expand access to holistic care that addresses both physical and emotional well-being.

Monica is known for her compassion, empathy, and unwavering dedication to her patients. She strives to create a safe and supportive environment where individuals feel heard, respected, and empowered in their healing journey.

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Collaborative Care Network

Trusted Mental Health Partners & Referral Psychologists

At Texas Ketamine & Wellness Center, we believe optimal outcomes come from collaboration between medical and mental-health professionals. Our referral network includes trusted psychologists and therapists who provide integration support, psychotherapy, and ongoing counseling to ensure the long-term success of ketamine treatment.

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Dr. Cyrus Martin, PhD, LMSW, LCDC

The Well Nest, Houston TX

Dr. Martin is a licensed clinical social worker, chemical dependency counselor, and human services professional specializing in integrative mental health and trauma-informed care. 

With a background spanning clinical practice, research, and program leadership, Dr. Martin provides compassionate pre- and post-infusion support for individuals engaging in ketamine-assisted therapy. 

His approach blends mindfulness, internal family systems, and evidence-based counseling to help clients prepare for, integrate, and sustain the insights gained from their ketamine experiences. Grounded in empathy and clinical rigor, Dr. Martin’s goal is to ensure every client’s journey is safe, meaningful, and transformative.

All collaborating professionals operate as independent entities. Referrals are made solely for patient benefit; no financial relationship exists between Texas Ketamine & Wellness Center and outside providers.

Ready to Get Your Life Back?

You don’t have to spend another day in the dark. You deserve to start feeling better now – and we’re here to guide you every step of the way.

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