Anxiety and depression therapists and psychiatrists in Westlake Village, CA

It is my prayer to build a practice that helps you reach a place where your mental health is truly at the forefront. My hope is that with each appointment—and each day—you feel supported in moving closer to the best version of yourself.

I’m Antionette Sob, a Board-Certified Psychiatric Mental Health Nurse Practitioner dedicated to empowering individuals to live fuller, more balanced lives. With over a decade of nursing experience and advanced training in mental health, I aim to provide safe, supportive, and compassionate care. I believe that everyone can heal and grow — sometimes we need the right tools and guidance.

I work primarily with young adults who are feeling overwhelmed, burned out, or stuck — especially when it comes to anxiety and relationship challenges. Many of my clients are used to holding it all together on the outside, but internally feel lost or unsure of how to move forward.

I bring a calm, grounded presence to the work, even in high-stress situations. Much of my background is in working with clients in crisis, which allows me to help you navigate difficult emotions without things feeling out of control. At the same time, I’m warm, relatable, and honest — I’ll meet you where you are, while also gently challenging patterns that may be keeping you stuck when or if needed.

Hi, I’m Mercy Nyeche, DNP, PMHNP-BC. I’m a board-certified Psychiatric Mental Health Nurse Practitioner dedicated to helping adults regain clarity, confidence, and emotional balance.

Reaching out for support can feel overwhelming especially when you’re used to being the strong one for everyone else. Whether you’re navigating anxiety, depression, burnout, life transitions, or feeling stuck in patterns that no longer serve you, you don’t have to do it alone.

My approach is compassionate, collaborative, and evidence-based. I take time to truly listen, understand your goals, and create a personalized treatment plan that fits your life, not just your symptoms.

Please note that I do not provide disability paperwork, leave of absence documentation, FMLA forms, legal letters, school accommodation letters, or other administrative forms. The only documentation I provide is a work excuse note for the date of your appointment and, when clinically appropriate based on my evaluation and professional judgment, up to three (3) days off from work. If you require any of the services or documentation listed above, I kindly ask that you schedule with another provider who offers those services. Thank you for your understanding and for helping ensure that your healthcare needs are matched with the appropriate provider.

I hold a Master’s degree in Clinical Psychology from Antioch University, Santa Barbara, California. My practice blends both psychological approach as well as eastern wisdom. With a diverse background of professional and life experiences, I bring empathy, warmth, and a solution-focused mindset to my clients. My goal is to help clients alleviate suffering, boost their productivitiy, and enhance well-being.

I grew up in a small town in Hawaii, then came to Southern California and began studying psychology in 2001. I completed my master’s degree at Fuller School of Psychology in 2010 and served children and families at a community mental health agency for 10 years, also starting a private practice in 2015. While I loved island life, I’ve put down roots here through friendships, involvement in my community, and my love of LA’s cultural diversity.