Dr. Steven L. Mandel

Founder & President

Dr. Steven L. Mandel, Founder & President, is an internationally recognized expert and pioneer in the use of ketamine infusion therapy to treat mental health disorders and chronic pain. (…)


Sam Mandel

Cofounder & Chief Operating Officer

Sam Mandel, Cofounder & Chief Operating Officer, is a lifelong mental health advocate and entrepreneur. Mandel started Ketamine Clinics Los Angeles with his father, Dr. Steven Mandel (…)



Angel J.

Director of Operations

Angel is a graduate of San Jose State University where she received her bachelor's degree. With more than 12 years of business management experience and 8 years in medical administrative management, Angel brings strong operational capabilities to Ketamine Clinics Los Angeles and ensures the clinic runs smoothly. Angel joined the clinic in 2016 and maintains the integrity of daily operations. Angel grew up with a strong work ethic, having worked in her family’s business since the age of 13. Originally from Northern California, Angel enjoys all Southern California has to offer and when not working at the clinic, spends her time at the beach, enjoying family and friends, and traveling with her boyfriend of 20 years. LEARN MORE

Medical Team

Conor G.

Physician Assistant

Conor received a bachelor’s degree from Boston University where he graduated cum laude with a double-major in Neuroscience and Psychology. He received a master’s degree from Long Island University. Conor has a longtime fascination with the mind and how the brain works. His education provided him many unique opportunities to participate in research and lab projects that offered him firsthand insight into the physiology of the brain. Conor was actively involved with a student suicide prevention organization, volunteered as a mentor for children and teens with mental health disorders, and as an in-home therapy assistant for families struggling to function. Conor joined Ketamine Clinics Los Angeles in 2018 and is a fully licensed medical provider. Each day he partners with Dr. Mandel to oversee infusions and lead the clinical care team. His knowledge, empathy, and personal connection with patients makes him an invaluable part of the clinic’s team. Conor enjoys weightlifting, relaxing at the beach, playing volleyball, attending concerts, and travelling. LEARN MORE

Denisse M.

Licensed Vocational Nurse

Denisse worked in the medical field for seven years as a project assistant at the USC Cancer Center before becoming a full time nurse at Ketamine Clinics Los Angeles in 2017. She was inspired to become a nurse by her mother who provided care to the elderly. Denisse is known for the kind and compassionate way she cares for patients. Coming from a large family, she helped raise younger brothers, nieces, and nephews and was happiest when she was taking care of others. A native of Los Angeles, Denisse is bilingual and speaks both Spanish and English. She is passionate about the arts and dabbles in drama classes. Her husband is a chef and makes her lunches to bring to work every day. In her free time, she likes to play with her dog Penny, read graphic novels, go to concerts, watch movies, and spend time with family and friends. LEARN MORE

Admin Team

Alyssa M.

Project Manager

Alyssa graduated from California State University Long Beach, where she received a bachelor's degree in human development with a double minor in psychology and child development. Alyssa, who joined Ketamine Clinics Los Angeles in 2016, serves as patient care manager where she leads the front office in assisting patients from their first call to long after they complete their initial treatment. She manages all aspects of the front office, is a master scheduler, and ensures patient care is always the highest priority. Alyssa volunteers with Southern California Foster Family & Adoption Agency, has worked with emotionally disturbed middle-schoolers, and volunteers with several nonprofit organizations. Originally from Palo Alto, Alyssa participated in competitive gymnastics for ten years. When not working, she travels, spends time with friends, enjoys working out, reading, and watching movies. LEARN MORE

Adam H.

Patient Care Manager

Adam is a graduate of Chapman University where he received a bachelor's degree in public relations and advertising. He became interested in mental health after completing several courses in psychology during his undergraduate studies. Prior to joining Ketamine Clinics Los Angeles in 2020, he worked for a dermatopathology laboratory assisting patients and organizing clinical research. Born and raised in Portland, Oregon, Adam finds himself most at peace when he's outdoors with family and friends. When he's not working, he enjoys tending to his houseplants and weekend getaways. LEARN MORE

William S.

Patient Care Coordinator

William graduated from California State University Los Angeles with a bachelor’s degree in business administration. He completed his degree while working in several different industries including healthcare, customer service, and music. Prior to transferring to CSULA, William attended Los Angeles Community College where he became part of the first group to be awarded a spot in the President's Scholar program. A jack of all trades, William helps patients with the check-in process, manages the clinic’s social media pages and supports other projects for the clinic. Born and raised in California, William spends his free time working on video projects, cooking, drawing, and playing with his cats. LEARN MORE

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