About Us

Karen Lynn Chamberlin has been an RN, BSN, and CAMS for over 32 years and has been specializing in aesthetic procedures for over 19 years. West Valley Medical Aesthetics began in 2005 and opened its doors to a newly renovated Agoura office in May of 2016. She is a trainer for Allergan, the makers of Botox. 

Along with all of her certifications and achievements, she is a trainer for Allergen, the makers of Botox, and sits on the advisory board at Evolus. Not only is Karen known for her pristine injecting skills, but she is also known for her ability to educate and bring comfort to her patients during their procedures. Under the medical supervision of Dr. George Graf MD, Karen has risen to the top 1% of injectors nationwide. On a more personal note, Karen is a single mother of four daughters and raised them by the saying, ”Independent, strong women, may we know them, be them, and inspire them.” We invite you to come into the office for a complimentary consultation and let Karen inspire you. 

Hillary was raised in Agoura Hills, and attended the University of Arizona. She has a Bachelor of Science in Nursing in addition to a Bachelor of Science in Speech, Language and Hearing Sciences. She currently lives in Westlake Village with her husband and their three sons.

Hillary became a Registered Nurse in 1998. She began working at a Plastic Surgery Center in the Operating Room, Recovery Room and performing cosmetic procedures, while also working in Pediatric ICU. In 2000, she began working in the Emergency Department and was there concurrently while joining our practice in early 2019. In 2022, she left the ER to focus solely on cosmetic nursing.

Trisha Telford joined the Westside Medical Aesthetics team in 2017.

Trisha brings with her experience in the fields of dermatology and endocrinology from previous jobs in the Los Angeles area. She graduated from USC School of Nursing in 2000 and earned her Master’s Degree in Nursing/Family Nurse Practitioner at UCLA in 2003. She received her training in the field of dermatology from the office of Dr. De Stefano in Calabasas, (now called “Dermatology Associates”), and provided skin care for patients both medically and cosmetically. Trisha has a warm and friendly approach to treating clients, always making them feel comfortable and welcome in our office. She works part-time, seeing new clients and evaluating their overall health and well-being before and during their procedures. We are so glad to have Trisha on our team!

Christina is here to warmly welcome you and greet you with a friendly smile. She brings several years of experience within a medical spa, as well as previous experience working for a board certified plastic surgeon. She is here to help with all of your scheduling and administrative concerns. In addition to making sure everything is ready for your appointments, she’s always available to provide you with any information you may need.

Janna Williams has been in the skin care and beauty industry for over 20 years. She prides herself on the ability to work with people of all ages and skin types to customize the best skin care regimen and treatments to meet their needs. Janna helps collaborate with our medical team to help her clients obtain the best results for their skin. She is a certified specialist with Epicuren and Obagi skin care lines. She uses and sells these products to help her clients have amazing results for better and healthier skin.